Q371 - Navigation General, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. A magnetic compass card is marked in how many degrees?Not learned 2. The heading of a vessel is indicated by what part of the compass?Not learned 3. What does the lubber's line on a magnetic compass indicate?Not learned 4. Which would influence a magnetic compass?Not learned 5. A vessel heading NNW is on a course of __________.Not learned 6. A vessel heading NE is on which course?Not learned 7. A vessel heading WSW is on a course of __________.Not learned 8. A vessel heading SSE is on a course of __________.Not learned 9. Apparent wind speed blowing across a MODU under tow can be measured by a(n) __________.Not learned 10. What is the function of the "rudder adjustment" control on an autopilot steering stand?Not learned 11. What does the helm command "Steady as you go" mean?Not learned 12. When a helmsman receives the command "Right 15 degrees rudder," what should the helmsman's immediate reply be?Not learned 13. What is the "iron mike"?Not learned 14. The lookout sights a vessel dead ahead. How would this be reported on the bell?Not learned 15. You are standing the wheel watch on entering port and the Master gives you a rudder command which conflicts with a rudder command from the Pilot. What should you do?Not learned 16. You are on watch at sea at night and a fire breaks out in #3 hold. What should be done IMMEDIATELY?Not learned 17. When must a proper look-out be kept?Not learned 18. You are on watch at night in clear visibility and the vessel has just been anchored. What is the first thing that you should do after the anchor has been let go?Not learned 19. You are on watch at sea and find it prudent to call the Master to the bridge due to traffic congestion. Which statement is TRUE concerning the moment that the Master officially relieves you of the conn?Not learned 20. While on watch at sea you must maintain a proper lookout at all times. On a 700-foot cargo vessel being hand-steered during daylight hours in good visibility and clear of any navigational hazards, who may be the lookout?Not learned 21. You are a watchstanding mate and have come to the bridge to relieve the watch. After reviewing the chart and having been briefed by the off-going mate, you are now ready to affect the relief. When is the watch officially transferred to you?Not learned 22. At 0000 you fix your position and change course to 090°T. At 0030 you again fix your position, and it is 0.5 mile east of your DR. Which statement is TRUE?Not learned 23. At 0000 you fix your position and change course to 270°T. At 0030 you again fix your position, and it is 0.5 mile east of your DR. Which statement is TRUE?Not learned 24. At 0000 you fix your position and plot a new DR track line. At 0200 you again fix your position, and it is 0.5 mile east of your DR. Which statement is TRUE?Not learned 25. At 0000 you fix your position and plot a new DR track line. At 0200 you again fix your position and it is 0.5 mile west of your DR. Which statement is TRUE?Not learned 26. At 1423 you are on course 072°T at 12.2 knots, when you sight a rock awash bearing 070°T at a range of 3.6 miles. If you change course at 1427, what course would you steer to leave the rock 1.0 mile abeam to port?Not learned 27. At 2221 your course is 222°pgc at a speed of 11.2 knots, when radar detects a buoy bearing 355° relative, at a range of 5.8 miles. The gyro error is 2°E. If you change course at 2226, what course should you steer to leave the buoy 1.0 mile abeam to port?Not learned 28. On 26 February 1983, at 1750 EST (ZD +5) what will be the predicted height of tide at New Haven (city dock), CT?Not learned 29. On 27 April 1983, at 1105 DST (ZD +4), what will be the predicted height of tide at Falkner Island, CT?Not learned 30. For 3 November 1983, at 0830 EST (ZD +5) at Catskill, NY, what is the predicted height of tide?Not learned 31. According to Buys Ballot's law, when an observer in the Northern Hemisphere experiences a northwest wind, where is the center of low pressure located?Not learned 32. According to Buys Ballot's Law, when an observer in the Southern Hemisphere experiences a northwest wind, where is the center of the low pressure located?Not learned 33. How can the accuracy of an azimuth circle be checked?Not learned 34. For an accurate barometer check, you would __________.Not learned 35. What will act to dissipate fog?Not learned 36. Which action is the safest and most prudent procedure to follow while navigating in the vicinity of a tropical cyclone?Not learned 37. Which action should be taken prior to assuming the Deck Watch while the vessel is in port?Not learned 38. In addition to the National Weather Service, what agency provides plain-language radio weather advisories for the coastal waters of the United States?Not learned 39. When adjusting a magnetic compass for error, a deviation table should be made __________.Not learned 40. When adjusting a magnetic compass for error, which is TRUE concerning the deviation table?Not learned 41. What is an advantage of the magnetic compass aboard vessels?Not learned 42. Advection fog is most commonly caused by __________.Not learned 43. You will be advised of any hazardous areas due to the fallout of a nuclear explosive by a message with which code word?Not learned 44. Which agency maintains federal aids to navigation?Not learned 45. Which agency publishes the Light Lists?Not learned 46. What agency of the U.S. Government issues charts of U.S. waters and Coast Pilots?Not learned 47. The agonic line on an isomagnetic chart indicates the __________.Not learned 48. Which aid is NOT marked on a chart with a magenta circle?Not learned 49. How are aids to navigation marking the intracoastal waterway (ICW) identified?Not learned 50. Air circulation is caused or affected by __________.Not learned 51. An air mass that has moved down from Canada would most likely have which symbols?Not learned 52. Air masses near the earth's surface __________.Not learned 53. When is an air mass termed "warm"?Not learned 54. Air temperature varies with __________.Not learned 55. Which is TRUE of an alternating light?Not learned 56. How are altocumulus clouds defined?Not learned 57. What is TRUE concerning an anemometer on a moving vessel?Not learned 58. An aneroid barometer on a boat should always be __________.Not learned 59. An aneroid barometer is an instrument __________.Not learned 60. Aneroid barometers are usually calibrated to indicate atmospheric pressure in which units?Not learned 61. At what angle to the isobars do surface winds blow over the open sea?Not learned 62. Where can the annual change in variation for an area be found?Not learned 63. How is the annual rate of change for magnetic variation shown on a pilot chart?Not learned 64. You have another ship overtaking you close aboard to starboard. You have 3 radar targets bearing 090° relative at ranges of .5-mile, 1 mile, and 1.5 miles. Which term is given to these unwanted echoes?Not learned 65. Which is a characteristic of anticyclones?Not learned 66. The apparent wind's speed can be zero, but only when two conditions are present. One condition is that the true __________.Not learned 67. The apparent wind is zero when the true wind is __________.Not learned 68. The appearance of nimbostratus clouds in the immediate vicinity of a ship at sea would be accompanied by which of the following conditions?Not learned 69. What should you apply to a fathometer reading to determine the depth of water?Not learned 70. As it approaches, what will a typical warm front bring?Not learned 71. You are approaching Chatham Strait from the south in foggy weather. You have Coronation Island and Hazy Islands on the radar. Suddenly the radar malfunctions. You then resort to using whistle echoes to determine your distance off Coronation Island. Your stopwatch reads 16.3 seconds for the echo to be heard. How far are you off Coronation Island?Not learned 72. You are approaching a light fitted with a RACON. The light may be identified on the radar by __________.Not learned 73. When approaching a preferred-channel buoy, the best channel is NOT indicated by the __________.Not learned 74. You are approaching a sea buoy which emits a racon signal. This signal is most frequently triggered by which type of radar?Not learned 75. The approximate distance to a storm center can be determined by noting the hourly rate of fall of the barometer. If the rate of fall is 0.08 - 0.12 inches, what is the approximate distance to the storm center?Not learned 76. What is the approximate geographic range of Fenwick Island Light, Delaware, if your height of eye is 37 feet (11.3 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".Not learned 77. What is the approximate geographic range of Fenwick Island Light, Delaware, if your height of eye is 42 feet (12.8 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".Not learned 78. What is the approximate geographic range of Point Judith Light, Rhode Island, if your height of eye is 62 feet (18.9 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". (use charted range of 20 miles as nominal range)Not learned 79. What is the approximate geographic range of Race Rock Light, NY, if your height of eye is 27 feet (8.2 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".Not learned 80. What is the approximate geographic range of Shinnecock Light, NY, if your height of eye is 24 feet (7.3 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".Not learned 81. What is the approximate geographic range of Southwest Ledge Light, Connecticut, if your height of eye is 32 feet (9.8 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".Not learned 82. What is the approximate geographic visibility of an object with a height above the water of 70 feet, for an observer with a height of eye of 65 feet?Not learned 83. The approximate mean position of the axis of the Gulf Stream east of Palm Beach, FL, is __________.Not learned 84. What is the approximate wave length of an X Band Radar operating on a frequency of approximately 9.5 GHz?Not learned 85. What area of the earth cannot be shown on a standard Mercator chart?Not learned 86. Which is an area of strong westerly winds occurring between 40°S and 60°S latitude?Not learned 87. On an Army Corps of Engineers navigation map, how is each mile A.H.P. on the Lower Mississippi River marked?Not learned 88. Your ARPA has automatic speed inputs from the log. Due to currents, the log is indicating a faster speed than the speed over the ground. What should you expect under these circumstances?Not learned 89. Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel?Not learned 90. The ARPA may swap targets when automatically tracking if two targets are in which situation?Not learned 91. Your ARPA has been tracking a target and has generated the targets course and speed. The radar did not receive a target echo on its last two scans due to the weather. What should you expect under these circumstances?Not learned 92. Your ARPA has two guard zones. What is the purpose of the inner guard zone?Not learned 93. Ascending and descending air masses with different temperatures is part of an important heat transmitting process in our atmosphere. Which term is given to this process?Not learned 94. Which are associated with Cumulonimbus clouds?Not learned 95. On an Atlantic Ocean voyage from New York to Durban, South Africa, you should expect the Agulhas Current to present a strong __________.Not learned 96. Which term describes the atmosphere in the vicinity of a high pressure area?Not learned 97. Atmospheric pressure may be measured with a(n) __________.Not learned 98. Atmospheric pressure at sea level is equal to __________.Not learned 99. You are attempting to locate your position relative to a hurricane in the Northern Hemisphere. Where is your vessel located if the wind direction remains steady, but with diminishing velocity?Not learned 100. Automatic identification systems (AIS) are expected to broadcast all of the following information EXCEPT __________.Not learned 101. Automatic identification systems (AIS) are required to do which of the following?Not learned 102. On which of the following does an automatic identification system (AIS) transponder transmit and receive information?Not learned 103. Which two channels does an automatic identification system (AIS) transponder use to transmit and receive information broadcasts?Not learned 104. The average height of the surface of the sea for all stages of the tide over a 19 year period is known by which term?Not learned 105. What is the average speed of the movement of a hurricane following the recurvature of its track?Not learned 106. What is the average speed of movement of a hurricane prior to recurvature?Not learned 107. To avoid error, how should you read the scale of an aneroid barometer?Not learned 108. Barometers are calibrated at which standard temperature?Not learned 109. What does a barometer measure?Not learned 110. When your barometer reading changes from 30.25 to 30.05 in a 12-hour period it indicates __________.Not learned 111. Barometer readings in weather reports are given in terms of pressure at which reference location?Not learned 112. A barometer showing falling pressure indicates the approach of a __________.Not learned 113. What is a barometric pressure reading of 29.92 inches of mercury is equivalent to?Not learned 114. The bases of middle clouds are located at altitudes of between __________.Not learned 115. What is the basic principle of the magnetic compass?Not learned 116. The beam width of your radar is 2°. The left tangent bearing of a small island, as observed on the PPI scope, is 056° pgc. If the gyro error is 2° E, what bearing would you plot on the chart?Not learned 117. Which Beaufort force indicates a wind speed of 65 knots?Not learned 118. The Beaufort scale is used to estimate which element of the weather?Not learned 119. Which is the name given to the belt of light and variable winds between the westerly wind belt and the northeast trade winds?Not learned 120. What benefit is a weather bulletin to a mariner?Not learned 121. The Benguela Current flows in which direction?Not learned 122. Which defines the height of tide?Not learned 123. The best estimate of the wind direction at sea level can be obtained from observing the direction of the __________.Not learned 124. The Brazil Current flows in which general direction?Not learned 125. Brief, violent showers frequently accompanied by thunder and lightning are usually associated with __________.Not learned 126. What does a buoy with a composite group-flashing light indicate?Not learned 127. Where are buoys and day beacons exhibiting a yellow triangle or square painted on them used?Not learned 128. Buoys and day beacons exhibiting a yellow triangle or square painted on them are used __________.Not learned 129. Which buoy will NOT display white retroreflective material?Not learned 130. Which of the buoys listed below could be used to mark an anchorage?Not learned 131. When a buoy marks a channel bifurcation, the preferred channel is NOT indicated by __________.Not learned 132. Buoys which mark dredging areas are painted which color?Not learned 133. How are buoys which mark isolated dangers painted?Not learned 134. Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic?Not learned 135. Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE?Not learned 136. A buoy marking a wreck will show a(n) __________.Not learned 137. Which buoy may be even numbered?Not learned 138. Which buoy may be odd numbered?Not learned 139. Which buoy may be odd numbered?Not learned 140. Which buoy is NOT numbered?Not learned 141. When a buoy is in position only during a certain period of the year, where may the dates when the buoy is in position be found?Not learned 142. A buoy having red and green horizontal bands would have which light characteristic?Not learned 143. The buoy symbol printed on your chart is leaning to the northeast. What does this indicate?Not learned 144. Which of the buoy symbols shown in illustration D032NG below indicates a safe water mark?Not learned 145. You are in a buoyed channel at night and pass a lighted buoy with an irregular characteristic. Who should you report this to?Not learned 146. A cardinal mark showing an uninterrupted quick-flashing white light indicates the deepest water is located in which quadrant?Not learned 147. In most cases, the direction of the apparent wind lies between the bow and which reference point?Not learned 148. If you are caught in the left semicircle of a tropical storm, in the Southern Hemisphere, which action should you take?Not learned 149. What will cause the ARPA to emit a visual alarm, audible alarm, or both?Not learned 150. What causes compass deviation?Not learned 151. Which causes the Earth's irregular heating?Not learned 152. Which is the cause of tropic tides?Not learned 153. What causes variation in a compass?Not learned 154. Which causes the wind flow from the horse latitudes to the doldrums to be deflected?Not learned 155. Which change in the condition of the seas could indicate the formation of a tropical storm or hurricane several hundred miles from your location?Not learned 156. When changing from a compass course to a true course, which should you apply?Not learned 157. You are in a channel inbound from sea. A daymark used to mark a channel junction when the preferred channel is to starboard will have the shape indicated by what letter in illustration D045NG below?Not learned 158. What is a characteristic of cardinal marks?Not learned 159. Which characteristic and color will a preferred-channel buoy show?Not learned 160. What is characteristic of an isophase light?Not learned 161. Which characteristics will a lighted buoy that is to be left to starboard, when entering a U.S. port from seaward have?Not learned 162. Which would be the characteristic of an occulting light?Not learned 163. Which is a characteristic of a port side daymark?Not learned 164. What is the characteristic of a quick flashing light?Not learned 165. What characteristics can be used to identify a lighthouse?Not learned 166. Which is a characteristic of the weather preceding an approaching warm front?Not learned 167. On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. Which is TRUE of the red sector?Not learned 168. Charts should be corrected by using information published in which text?Not learned 169. Chart correction information is NOT disseminated through the __________.Not learned 170. A chart has extensive corrections to be made to it. When these are made and the chart is again printed, what term is given to this chart issue?Not learned 171. If a chart indicates the depth of water to be 6 fathoms and your draft is 6.0 feet, what is the depth of the water under your keel? (Assume the actual depth and charted depth to be the same)Not learned 172. Your chart indicates that there is an isolated rock and names the rock using vertical letters. This indicates the __________.Not learned 173. The chart indicates the variation was 3°45'E in 1988, and the annual change is increasing 6'. If you use the chart in 1991 how much variation should you apply?Not learned 174. The chart indicates the variation was 3°45'W in 1988, and the annual change is decreasing 6'. If you use the chart in 1991 how much variation should you apply?Not learned 175. Chart information details to be used in ECDIS should be the latest edition of information originated by a government-authorized hydrographic office and conform to the standards of which organization?Not learned 176. How are chart legends which indicate a conspicuous landmark printed?Not learned 177. Chart legends printed in capital letters show that the associated landmark is __________.Not learned 178. How is a chart with a natural scale of 1:160,000 classified?Not learned 179. A chart position enclosed by a semi-circle is a(n) __________.Not learned 180. A chart position enclosed by a square is a(n) __________.Not learned 181. Which chart has a scale of 1:45,000Not learned 182. A chart with a scale of 1:80,000 would fall into which category?Not learned 183. Charts showing the coast of Mexico are produced by the United States __________.Not learned 184. On charts of U.S. waters, a magenta marking is NOT used for marking a __________.Not learned 185. Which defines the term charted depth?Not learned 186. What are Cirrus clouds primarily composed of?Not learned 187. Civil twilight begins at 1910 zone time on 20 July. Your DR position at that time is LAT 22° 16' N, LONG 150° 06' W. Which statement concerning the planets available for evening sights is TRUE?Not learned 188. Civil twilight occurs at 0558 zone time on 30 December. Your DR position at that time is LAT 15°02'N, LONG 46°02'W. Which statement concerning the planets available for morning sights is TRUE?Not learned 189. Civil twilight starts at 1812 zone time on 26 August, your DR position at that time is LAT 21°06'S, LONG 14°56'W. Which statement concerning the planets available for evening sights is TRUE?Not learned 190. Which class of tide prevails in the greatest number of important harbors on the Atlantic Coast?Not learned 191. What classification of tropical cyclone would have closed isobars, counter clockwise rotary circulation, and sustained winds between 34 and 63 knots?Not learned 192. What do clear skies, with the exception of a few cumulus clouds indicate?Not learned 193. On a clear, warm day, you notice the approach of a tall cumulus cloud. The cloud top has hard well-defined edges and rain is falling from the dark lower edge. What should you expect if this cloud passes directly overhead?Not learned 194. The climate of the eastern coast of the Gulf of Mexico __________.Not learned 195. The climate of the northern coast of the Gulf of Mexico is _________.Not learned 196. Clouds are classified according to their __________.Not learned 197. Which cloud commonly produces a halo about the Sun or Moon?Not learned 198. Which clouds are described as high clouds, composed of small white flakes or scaly globular masses, and often banded together to form a "mackerel sky"?Not learned 199. Which cloud is described as a low, dark, sheet-like cloud which is associated with continuous precipitation for many hours?Not learned 200. Which clouds are described as uniform, grayish-white cloud sheets that cover large portions of the sky, and are responsible for a large percentage of the precipitation in the temperate latitudes?Not learned 201. How are clouds formed?Not learned 202. When would cloud formations be minimal?Not learned 203. What is the name of a cloud of marked vertical development (often anvil-shaped) and produces showers?Not learned 204. Clouds with the prefix "nimbo" in their name __________.Not learned 205. A cloud sequence of cirrus, cirrostratus, and altostratus clouds followed by rain usually signifies the approach of which front?Not learned 206. Which clouds is a thin, whitish, high cloud popularly known as "mares' tails"?Not learned 207. Which cloud type is normally associated with thunderstorms?Not learned 208. The Coast Guard broadcasts urgent marine storm warning messages on which of the following frequencies?Not learned 209. The Coast Guard Captain of the Port has excluded all traffic from a section of a port, while a regatta is taking place. Which describes the buoys marking this exclusion area?Not learned 210. Coast Pilots and navigational charts are kept corrected and up-to-date by using the __________.Not learned 211. A coastal chart could have a scale of __________.Not learned 212. Which is TRUE of the term coastal current?Not learned 213. When cold air displaces warm air you have a(n) __________.Not learned 214. When a cold air mass and a warm air mass meet, and there is no horizontal motion of either air mass, it is called a(n) __________.Not learned 215. A cold front moving in from the northwest can produce __________.Not learned 216. As a cold front passes how do the pressure and the winds change?Not learned 217. The cold ocean current which meets the warm Gulf Stream between latitudes 40° and 43° N to form the "cold wall" is called the __________.Not learned 218. Cold water flowing southward through the western part of the Bering Strait between Alaska and Siberia is joined by water circulating counterclockwise in the Bering Sea to form the __________.Not learned 219. What color lights do lighted information markers display?Not learned 220. What are the colors of a mid-channel daymark?Not learned 221. What is the color scheme of navigational marks used for informational or regulatory purposes?Not learned 222. What is a common unit of measure for atmospheric pressure?Not learned 223. Which is the most commonly encountered fog at sea?Not learned 224. When compared to air temperature, which factor is most useful in predicting fog?Not learned 225. Compared to a low pressure system, generally the air in a high is __________.Not learned 226. What is the compass course of a vessel heading NNE?Not learned 227. What is the compass course of a vessel heading ESE?Not learned 228. What is the compass course of a vessel heading NNW?Not learned 229. What is the compass course of a vessel heading NW?Not learned 230. What is the compass course of a vessel heading WNW?Not learned 231. What is the compass course of a vessel heading SW?Not learned 232. The compass deviation changes as the vessel changes __________.Not learned 233. Compass error is equal to the __________.Not learned 234. The compass error of a magnetic compass that has no deviation is __________.Not learned 235. Which is TRUE if the compass heading and the magnetic heading are the same?Not learned 236. The compass rose on a nautical chart indicates both variation and __________.Not learned 237. Which of the following compensates for errors introduced when a vessel heels over?Not learned 238. Which compensates for induced magnetism in the horizontal soft iron of a vessel?Not learned 239. Complete information on weather broadcasts throughout the world is contained in __________.Not learned 240. Which condition exists in the eye of a hurricane?Not learned 241. Which condition indicates that you are in a hurricane's dangerous semicircle in the Northern hemisphere?Not learned 242. Which condition(s) is(are) necessary for the formation of dew?Not learned 243. Which condition will occur after a cold front passes?Not learned 244. Which condition suggests that your present position lies in the navigable semicircle of a tropical storm?Not learned 245. Which conditions should a vessel entering the eye of a hurricane expect?Not learned 246. Which condition would NOT indicate the approach of a tropical storm?Not learned 247. Which condition would most likely result in fog?Not learned 248. Which conic projection chart features straight lines which closely approximate a great circle?Not learned 249. Considering the general circulation of the atmosphere, the wind system between latitudes 30° N and 60° N is commonly called the __________.Not learned 250. Which winds are consistent winds and blow from the horse latitudes to the doldrums?Not learned 251. Who should be consulted for changing conditions of controlling depths in major channels?Not learned 252. What does not contribute to the commercial GPS receiver position error?Not learned 253. By convention, what color is the south pole of a magnet painted?Not learned 254. By convention, the Earth's south magnetic pole is which color?Not learned 255. Coral atolls, or a chain of islands at right angles to the radar beam, may show as a long line rather than as individual targets. What causes this distortion?Not learned 256. Which correction(s) must be applied to an aneroid barometer?Not learned 257. The correction(s) which must be applied to an aneroid barometer reading include(s) __________.Not learned 258. Which corrector will compensate for the deviation which is maximum on intercardinal compass headings?Not learned 259. If you count 20 seconds between seeing lightning and hearing the thunder, how far is the storm away from you?Not learned 260. In which country would you expect the channels to be marked with the IALA-B Buoyage System?Not learned 261. You are on course 027°T and take a relative bearing to a lighthouse of 220°. What is the true bearing to the lighthouse?Not learned 262. You are on course 030°T. The relative bearing of a lighthouse is 45°. What is the true bearing?Not learned 263. You are on course 042°T. To check the course of your vessel you should observe a celestial body on which bearing?Not learned 264. You are on course 209°T. In order to check the longitude of your vessel, you should observe a celestial body on which bearing?Not learned 265. You are on course 138°T. To check the latitude of your vessel you should observe a celestial body on which bearing?Not learned 266. You are on course 312°T. To check the speed of your vessel you should observe a celestial body on which bearing?Not learned 267. While on a course of 159°T, a light bears 11° on the starboard bow at a distance of 10.6 miles. What course should you steer to pass 2 miles abeam of the light leaving it to starboard?Not learned 268. You are on course 180°T and take a relative bearing of a lighthouse of 225°. What is the true bearing of the lighthouse?Not learned 269. You are on course 222°T and take a relative bearing of a lighthouse of 025°. What is the true bearing to the lighthouse?Not learned 270. You are on course 238°T. To check the course of your vessel you should observe a celestial body on which bearing?Not learned 271. You are on course 277°T and take a relative bearing of a lighthouse of 045°. What is the true bearing to the lighthouse?Not learned 272. While on a course of 283°pgc, a light bears 10° on the port bow at a distance of 8.3 miles. What course should you steer to pass 3.5 miles abeam of the light leaving it to port?Not learned 273. You are on course 303°T. To check the speed of your vessel you should observe a celestial body on which bearing?Not learned 274. While on a course of 321°T, a light bears 7° on the starboard bow at a distance of 9.7 miles. What course should you steer to pass 3.5 miles abeam of the light leaving it to starboard?Not learned 275. You are on course 344°T and take a relative bearing of a lighthouse of 090°. What is the true bearing to the lighthouse?Not learned 276. You are on course 344°T and take a relative bearing of a lighthouse of 270°. What is the true bearing to the lighthouse?Not learned 277. While on a course of 349°T, a light bears 13° on your starboard bow at a distance of 10.8 miles. What course should you steer to pass 2.5 miles abeam of the light, leaving it to starboard?Not learned 278. While on a course of 349°T, a light bears 13° on the starboard bow at a distance of 10.8 miles. What course should you steer to pass 2.5 miles abeam of the light leaving it to starboard?Not learned 279. You are on course 355°T and take a relative bearing of a lighthouse of 275°. What is the true bearing of the lighthouse?Not learned 280. You are on course 357°T and take a relative bearing of a lighthouse of 180°. What is the true bearing to the lighthouse?Not learned 281. When crossing a front how do isobars tend to change?Not learned 282. Which of the following should be done when crossing the magnetic equator?Not learned 283. Cumulonimbus clouds are formed by __________.Not learned 284. Cumulonimbus clouds are most likely to accompany a(n) __________.Not learned 285. What do cumulus clouds that have undergone vertical development and have become cumulonimbus in form indicate?Not learned 286. Which is TRUE when a current flows in the opposite direction to the waves?Not learned 287. What current flows southward along the west coast of the United States and causes extensive fog in that area?Not learned 288. Which current is in many respects, similar to the Gulf Stream?Not learned 289. When does a current perpendicular to a vessel's track have the greatest effect on the vessel's course made good?Not learned 290. Current refers to the __________.Not learned 291. Which current is responsible for the movement of large quantities of ice into the North Atlantic shipping lanes?Not learned 292. Which current would you encounter on a direct passage from London, England, to Cape Town, South Africa?Not learned 293. Which current would you encounter on a direct passage from southern Africa to Argentina, South America?Not learned 294. A cyclone in its final stage of development is called a(n) __________.Not learned 295. In a cyclone, where is the lowest pressure found?Not learned 296. Cyclones tend to move __________.Not learned 297. Which is the only cylindrical chart projection widely used for navigation?Not learned 298. The Daily Memorandum contains which information?Not learned 299. The daily recurring pattern of pressure changes most noticeable in low latitudes is the __________.Not learned 300. The dangerous semicircle of a hurricane in the Northern Hemisphere is that area of the storm __________.Not learned 301. Where is the dangerous semicircle located on a hurricane in the Southern Hemisphere?Not learned 302. The dangerous semicircle of a typhoon in the Southern Hemisphere is that area __________.Not learned 303. Which data must ECDIS be able to record at one-minute intervals?Not learned 304. Which data must ECDIS be able to record at one-minute intervals?Not learned 305. Where can information about the direction and velocity of rotary tidal currents be found?Not learned 306. Which term is used to describe the database information that should be shown when a chart is first displayed on ECDIS?Not learned 307. Which term is given to the database resulting from (1) the transformation of the electronic navigational chart (ENC) by ECDIS for appropriate use, (2) the updates to the ENC by appropriate means, and (3) the additional data added by the mariner?Not learned 308. The datum from which the predicted heights of tides are reckoned in the tide tables is __________.Not learned 309. The datum from which the predicted heights of tides are reckoned in the tide tables is the same as that used for the charts of the locality. The depression of the datum below mean sea level for Hampton Roads, Virginia is __________.Not learned 310. Which datum is used for soundings on charts of the East Coast of the United States?Not learned 311. When daylight savings time is kept, the times of tide and current calculations must be adjusted. How can this be accomplished?Not learned 312. What daymark has NO lateral significance?Not learned 313. Which daymark has no lateral significance?Not learned 314. What daymark shape is used in the lateral system?Not learned 315. A daymark used to indicate the safe water in a channel will have which of the shapes shown in illustration D045NG below?Not learned 316. A daymark used to indicate the starboard side of the channel when approaching from seaward will have the shape indicated by what letter in illustration D045NG below?Not learned 317. A daymark used as a special mark is indicated by which letter in illustration D045NG below?Not learned 318. Daymarks marking the starboard side of the channel when going towards the sea are __________.Not learned 319. Which is TRUE of a dead reckoning (DR) plot?Not learned 320. A dead reckoning (DR) plot __________.Not learned 321. When should your dead reckoning position be plotted?Not learned 322. When the declination of the Moon is 0°12.5'S, you can expect some tidal currents in Gulf Coast ports to __________.Not learned 323. A decrease in barometric pressure is associated with all of the following except __________.Not learned 324. Which defines a light's luminous range?Not learned 325. The range of tide is the __________.Not learned 326. Which defines the term relative humidity?Not learned 327. What is the definition of height of tide?Not learned 328. The dense black cumulonimbus clouds surrounding the eye of a hurricane are called __________.Not learned 329. The depth of water on a chart is indicated as 23 meters. What does that depth convert to?Not learned 330. The depth of the water is indicated on a chart as 32 meters. What is this equal to?Not learned 331. What describes an accurate position that is NOT based on any prior position?Not learned 332. The vertical distance from the tidal datum to the level of the water is the __________.Not learned 333. Which describes a diurnal tide?Not learned 334. What describes an ebb current?Not learned 335. What describes a flood current?Not learned 336. Which describes the level of database information which cannot be removed from the ECDIS display and consists of information which is required at all times in all geographic areas and under all circumstances?Not learned 337. Which describes a light having characteristics which include color variations?Not learned 338. Which describes a line of position derived by radar range from an identified point on a coast?Not learned 339. Which is TRUE concerning privately maintained aids to navigation included in the Light List?Not learned 340. Which describes the result when you turn on the fast time constant (differentiator) control of a radar?Not learned 341. Which describes the visible range marked on charts for lights?Not learned 342. Which describes the wind circulation around a high-pressure center in the Northern Hemisphere?Not learned 343. What is the direction of rotation of tropical cyclones, tropical storms and hurricanes in the Northern Hemisphere?Not learned 344. What does the description "Racon" beside an illustration on a chart mean?Not learned 345. You desire to make good 152°T. The magnetic compass deviation is 4°E, the variation is 5°E, and the gyro error is 3°E. A southwesterly wind produces a 4° leeway. Which course would you steer per standard compass to make good the true course?Not learned 346. Despite weather predictions for continued good weather, a prudent mariner should be alert for all of the following, EXCEPT a sudden __________.Not learned 347. You can determine if your vessel's position is in the dangerous or navigable semicircle of a hurricane by __________.Not learned 348. You determine your vessel's position by taking a range and bearing to a buoy. Your position will be plotted as a(n) __________.Not learned 349. You have determined that you are in the right semicircle of a tropical cyclone in the Northern Hemisphere. What action should you take to avoid the storm?Not learned 350. When determining compass error by an azimuth of Polaris, you enter the Nautical Almanac with the __________.Not learned 351. Deviation is the angle between the __________.Not learned 352. Deviation is caused by __________.Not learned 353. Deviation in a compass is caused by which of the following?Not learned 354. Deviation which is maximum on intercardinal compass headings may be removed by the __________.Not learned 355. Which device maintains a continuous graphic record of the heading of the vessel?Not learned 356. The dew point is reached when which condition occurs?Not learned 357. Which is TRUE concerning the dew point temperature?Not learned 358. The difference in degrees between true north and magnetic north is called __________.Not learned 359. Which is the difference between the DR position and a fix, both of which have the same time?Not learned 360. The difference between the heights of low and high tide is the __________.Not learned 361. The direction of prevailing winds in the Northern hemisphere is caused by the __________.Not learned 362. The direction of the southeast trade winds is a result of the __________.Not learned 363. The direction of the surface wind is __________.Not learned 364. The direction a vessel is pointed at any given time is the __________.Not learned 365. The direction in which a vessel is steered is the course. The path actually followed is the __________.Not learned 366. The direction in which a vessel should be steered between two points is known by which term?Not learned 367. Which is TRUE for the directive force acting on a gyrocompass?Not learned 368. Discounting slip, if your vessel is turning RPM for 10 knots and making good a speed of 10 knots, which is TRUE of the current?Not learned 369. Distance along a track line is measured on a Mercator chart by using which method?Not learned 370. The diurnal inequality of the tides is caused by __________.Not learned 371. The diurnal pressure variation is most noticeable in the __________.Not learned 372. The diurnal variation of pressure is most noticeable __________.Not learned 373. The diurnal variation of pressure is not visible in the middle latitudes in winter because __________.Not learned 374. In the doldrums you will NOT have __________.Not learned 375. How are the doldrums characterized?Not learned 376. In the doldrums you can expect __________.Not learned 377. What does a Doppler log in the bottom return mode indicate?Not learned 378. A Doppler log in the volume reverberation mode indicates __________.Not learned 379. When does a Doppler speed log indicate speed over ground?Not learned 380. A Doppler speed log indicates speed over ground __________.Not learned 381. A Doppler speed log indicates speed through the water __________.Not learned 382. What does the drift and set of tidal, river, and ocean currents refer to?Not learned 383. The dry bulb temperature is 78°F and the wet bulb temperature is 62°F. What is the relative humidity?Not learned 384. The dry-bulb temperature is 78°F (26°C) and the wet-bulb temperature is 68°F (20°C). What is the relative humidity?Not learned 385. When a dual-purpose marking is used, how should the mariner following the Intracoastal Waterway be guided?Not learned 386. Early indications of the approach of a hurricane may be all of the following EXCEPT __________.Not learned 387. An easterly wave is located 200 miles due west of your position, which is north of the equator. Where will the wave be in 24 hours?Not learned 388. What is an ebb current?Not learned 389. ECDIS must be able to perform all of the following EXCEPT __________.Not learned 390. The ECDIS must have the capability to preserve the record of the voyage track. How many hours of the previous track are required to be maintained?Not learned 391. ECDIS must give an alarm for which of the following cases?Not learned 392. ECDIS must give an alarm for which of the following cases?Not learned 393. ECDIS must give an alarm for which of the following cases?Not learned 394. An ECDIS is required to display which information?Not learned 395. An ECDIS is required to display which information?Not learned 396. An ECDIS is required to display which information?Not learned 397. ECDIS units incorporate Digital Chart Data Formats, which include __________.Not learned 398. All echo-sounders can measure the __________.Not learned 399. The edge of a hurricane has overtaken your MODU in the Gulf of Mexico and the northwest wind of a few hours ago has shifted to the west. This is an indication that you are located in the __________.Not learned 400. When does the effects of priming of the tides occur?Not learned 401. Eight points of a compass are equal to how many degrees?Not learned 402. If the electronic chart is part of an ECDIS, it must display the minimum data required by IMO/IHO. Which is NOT required to be displayed?Not learned 403. An electronic depth finder operates on which principle?Not learned 404. Electronic Plotting Aid (EPA) has which built in functions?Not learned 405. Electronic Plotting Aid (EPA) has which built in functions?Not learned 406. An Electronic Plotting Aid (EPA) will drop off a target's vector if more than __________ minutes elapse between each manual plot.Not learned 407. What enables you to estimate the bearing of a storm's center?Not learned 408. You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233°T, and bears 264°T at 68 miles from you. What is the course to steer and running time at 13 knots to intercept vessel A?Not learned 409. You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233°T, and bears 264°T, 68 miles from you. What is the time to intercept if you make 13 knots?Not learned 410. You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233°T, and bears 346°T at 68 miles from you. What is the course to steer at 13 knots to intercept vessel A?Not learned 411. You are enroute to assist vessel A. Vessel A is underway at 5 knots on course 063°T, and bears 136°T at 78 miles from you. What is the course to steer and running time at 13 knots to intercept vessel A?Not learned 412. You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 248°T at 64 miles from you. What is the course to steer at 13 knots to intercept vessel A?Not learned 413. You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 248°T at 64 miles from you. What is the time to intercept if you make 13 knots?Not learned 414. You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 284°T at 43 miles from you. What is the course to steer and running time at 16 knots to intercept vessel A?Not learned 415. You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 284°T, 43 miles from you. What is the time to intercept if you make 16 knots?Not learned 416. You are enroute to assist vessel A. Vessel A is underway at 6 knots on course 133°T, and bears 042° at 105 miles from you. What is the course to steer at 10 knots to intercept vessel A?Not learned 417. You are enroute to assist vessel A. Vessel A is underway at 6 knots on course 133°T, and bears 042°T, 105 miles from you. What is the time to intercept if you make 10 knots?Not learned 418. You are enroute to assist vessel A. Vessel A is underway at 6 knots on course 133°T, and bears 343°T at 92 miles from you. What is the course to steer at 9 knots to intercept vessel A?Not learned 419. You are enroute to assist vessel A. Vessel A is underway at 6 knots on course 133? T, and bears 343? T at 92 miles from you. What is the time to intercept if you make 9 knots?Not learned 420. You are enroute from Puerto Rico to New York. A hurricane makes up and is approaching. What does it indicate if the wind veers steadily?Not learned 421. As you enter a channel from seaward in a U.S. port, which is TRUE of the numbers on the starboard side buoys?Not learned 422. As you enter a U.S. channel from seaward, which is TRUE concerning the numbers on the buoys?Not learned 423. When entering a channel from seaward, the numbers on buoys __________.Not learned 424. You are entering an east coast port and see a buoy with a yellow triangle painted on it. What does the symbol indicate?Not learned 425. You will be entering the Mystic River in Connecticut. What is the current at the Highway Bridge at 1900 EST (ZD +5) on 24 January 1983?Not learned 426. You are entering port and have been instructed to anchor, as your berth is not yet available. You are on a SW'ly heading, preparing to drop anchor, when you observe the range lights as shown in illustration D047NG below, on your starboard beam. What action should you take?Not learned 427. In IALA Region B, entering from sea, how would a daymark on the port side of the channel be indicated on a chart?Not learned 428. When entering from seaward, what does a buoy displaying a composite group (2+1) flashing red light indicate?Not learned 429. When entering from seaward, what does a buoy displaying a single-flashing red light indicate?Not learned 430. On entering from seaward, which is TRUE of a starboard side daymark?Not learned 431. Entering from seaward, what do triangular-shaped daymarks mark?Not learned 432. Between the equator and the 46th parallel of latitude, there are 3099 meridional parts. How many degrees of equatorial longitude does 3099 meridional parts represent?Not learned 433. Which error is NOT included in the term "current" when used in relation to a fix?Not learned 434. How can you estimate the position of a tropical storm's center?Not learned 435. You can expect frontal activity when two air masses collide and __________.Not learned 436. What does the expression "the air is saturated" mean?Not learned 437. The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the __________.Not learned 438. Your weather chart indicates that you will cross the cold front of a low-pressure system in about 24 hours. Which statement is TRUE?Not learned 439. Which factor has the greatest effect on the amount of gain required to obtain a fathometer reading?Not learned 440. Which factor(s) is/are used to develop the charted information of a lighthouse?Not learned 441. What feature(s) of a daymark is (are) used to identify the beacon upon which it is mounted?Not learned 442. Which feature, when set to zero, might allow a GPS unit to have an accuracy equivalent to Precise Positioning Service receiver capability?Not learned 443. Which is a feature of a special daymark?Not learned 444. You will find daily information about the duration of slack water in a port on the Atlantic Coast in which publication?Not learned 445. To find a magnetic compass course from a true course what must you apply?Not learned 446. To find the specific phase characteristic of a lighthouse on a sound of the United States you would use which reference?Not learned 447. Which can you use to indicate the bearing of the center of a hurricane or tropical storm?Not learned 448. The first indications a mariner will have of the approach of a warm front will be __________.Not learned 449. What is the FIRST sign of the existence of a well-developed tropical cyclone?Not learned 450. What is the first visible indication of the presence of a tropical cyclone or hurricane?Not learned 451. What does the Flinders bar on a magnetic compass compensate for?Not learned 452. The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval?Not learned 453. The flow of air around an anticyclone in the Southern Hemisphere is __________.Not learned 454. Fog is most commonly associated with a(n) __________.Not learned 455. Fog forms when which condition exists?Not learned 456. Fog forms when the air temperature is at or below __________.Not learned 457. Fog is formed when __________.Not learned 458. Fog generally clears when the __________.Not learned 459. Fog is likely to occur when there is little difference between the dew point and the __________.Not learned 460. Which fog is produced by warm moist air passing over a cold surface?Not learned 461. How can you follow the approach of a dangerous cyclonic storm?Not learned 462. Which of the following is the most accurate method of determining gyrocompass error while underway?Not learned 463. Which of the following is associated with consistently high barometric pressure?Not learned 464. Which item is NOT associated with cumulonimbus clouds?Not learned 465. Which of the following is a boundary between two air masses?Not learned 466. Which of the following causes the development of an occluded front?Not learned 467. Which of the following causes a frontal thunderstorm?Not learned 468. Which of the following are data layer categories to be displayed on ECDIS?Not learned 469. Which of the following data layer categories is NOT displayed on ECDIS?Not learned 470. Which of the following describes the difference between true heading and magnetic heading?Not learned 471. Which of the following describes gyrocompass repeaters which reproduce the indications of the master gyrocompass?Not learned 472. Which of the following describes the principal purpose of magnetic compass adjustment?Not learned 473. Which of the following is NOT a form of precipitation?Not learned 474. All of the following can be found on a Pilot Chart EXCEPT information concerning which item?Not learned 475. Which of the following must an ECDIS system be able to perform?Not learned 476. Which of the following must the electronic chart of an ECDIS display, as required by IMO/IHO?Not learned 477. Which of the following represents the slope of a warm front?Not learned 478. Which of the following is a standard correction applied to the reading of an aneroid barometer?Not learned 479. Which of the following statements concerning frontal movements is TRUE?Not learned 480. Which of the following statements is FALSE?Not learned 481. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 482. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 483. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 484. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 485. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 486. Which of the following traits possessed by an articulated light makes it superior to other types of buoys?Not learned 487. Which of the following typically happens to the barometric pressure after a cold front passes?Not learned 488. Which of the following is the most useful factor for predicting weather?Not learned 489. The force resulting from the earth's rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called __________.Not learned 490. Which form of cloud, that is often known as "mackerel sky", is generally associated with fair weather?Not learned 491. Which form of navigation may be suspended without notice under defense planning?Not learned 492. Of the four light characteristics shown in illustration D019NG below which one does NOT represent a safe water mark of the IALA Buoyage System?Not learned 493. The four standard light colors used for lighted aids to navigation are red, green, white, and __________.Not learned 494. What is the function of a red triangular daymark?Not learned 495. A gale is characterized by a wind speed of __________.Not learned 496. A general chart could have a scale of __________.Not learned 497. General information on enroute weather and climate is found in __________.Not learned 498. General information about the location, characteristics, facilities, and services for U.S. and foreign ports may be obtained from which publication?Not learned 499. In general, on how many radio channels will an automatic identification system (AIS) operate?Not learned 500. Which general weather conditions should you expect to find in a low-pressure system?Not learned 501. A generally circular low pressure area is called a(n) __________.Not learned 502. What generally occurs when the land is cooler than the nearby water?Not learned 503. Generally speaking, you should expect to find low atmospheric pressure prevailing in the earth's __________.Not learned 504. Generally speaking, in the Northern Hemisphere, when winds are blowing from between SE and SW the barometric reading __________.Not learned 505. Generally speaking, a ship steaming across the North Pacific from Japan to Seattle is likely to experience __________.Not learned 506. On a gnomonic chart, a great circle track between Los Angeles and Brisbane will appear as a __________.Not learned 507. Good weather is usually associated with a region of __________.Not learned 508. Which government agency publishes the U.S. Coast Pilot?Not learned 509. Most GPS receivers use the Doppler shift of the carrier phase to compute __________.Not learned 510. The greater the pressure difference between a high and a low-pressure center, the __________.Not learned 511. When is the greatest directive horizontal force exerted on the magnetic compass of a vessel?Not learned 512. A green buoy has a yellow triangle on it. This is a(n) __________.Not learned 513. Red lights may appear on which buoys?Not learned 514. If the gyrocompass error is east, what describes the error and the correction to be made to gyrocompass headings to obtain true headings?Not learned 515. What is the gyrocompass error resulting from your vessel's movement in OTHER than an east-west direction?Not learned 516. Which term is given to that half of the hurricane to the right-hand side of its track (as you face the same direction that the storm is moving) in the Northern Hemisphere?Not learned 517. Which handheld instrument is used to measure distances between objects and the ship?Not learned 518. What happens to the barometric pressure after a cold front passes?Not learned 519. What happens to the intensity of a hurricane as it reaches higher latitudes and cooler waters?Not learned 520. A harbor chart could have a scale of __________.Not learned 521. How often is The Local Notice to Mariners updated?Not learned 522. You are heading in a northerly direction when you come across an easterly current. Your vessel will respond in which manner?Not learned 523. You are heading out to sea in a buoyed channel and see a quick flashing green light on a buoy ahead of you. In U.S. waters, how should you leave the buoy?Not learned 524. Heeling error is defined as the change of deviation for a heel of __________.Not learned 525. The height of a light is measured from which reference plane?Not learned 526. In very high latitudes, the most practical chart projection is the __________.Not learned 527. Most high pressure areas in the United States are accompanied by __________.Not learned 528. As a high pressure system approaches, the barometer reading __________.Not learned 529. Which is TRUE when a high pressure system is centered north of your vessel in the Northern Hemisphere?Not learned 530. The highest frequency of tropical cyclones in the North Atlantic Ocean occurs during which time frame?Not learned 531. Which system provides the highest level of commercial navigational accuracy?Not learned 532. What is the term used for the horizontal angle between the magnetic meridian and the north-south line axis line of the magnetic compass?Not learned 533. The horse latitudes are characterized by __________.Not learned 534. The "horse latitudes" are regions of __________.Not learned 535. Hot air can hold __________.Not learned 536. The Humboldt Current flows in which direction?Not learned 537. A hurricane is characterized by winds of which speed?Not learned 538. Hurricanes may move in any direction. However, it is rare and generally of short duration when a hurricane in the Northern Hemisphere moves in which direction?Not learned 539. A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT __________.Not learned 540. When a hurricane passes over colder water or land and loses its tropical characteristics, the storm becomes a(n) __________.Not learned 541. The hurricane season in the North Atlantic Ocean reaches its peak during which month?Not learned 542. If a hurricane several hundred miles away is moving in your general direction your barometer would __________.Not learned 543. A HYDROLANT warning would normally be sent for all of the following EXCEPT __________.Not learned 544. A hygrometer is a device used for determining __________.Not learned 545. Under the IALA-A and B Buoyage Systems, what does a buoy with alternating red and white vertical stripes indicate?Not learned 546. Under the IALA-B Buoyage System, which is TRUE of a buoy displaying a red light?Not learned 547. Under the IALA-B Buoyage System, a conical buoy will be __________.Not learned 548. Under the IALA-B Buoyage System, when entering from seaward, a buoy that should be left to port will be which color?Not learned 549. Under the IALA-B Buoyage System, when entering from seaward a lateral system buoy to be left to starboard may display which of the topmarks shown in illustration D046NG below?Not learned 550. Under the IALA-B Buoyage System, when entering from seaward which lateral system buoy as shown in illustration D046NG below, should be left to port?Not learned 551. The IALA Buoyage Systems do NOT apply to __________.Not learned 552. In the IALA Buoyage System, what do buoys with alternating red and green horizontal bands indicate?Not learned 553. Under the IALA-A Buoyage System, when entering from seaward which buoy as shown in illustration D046NG below, should be left to starboard?Not learned 554. In the IALA Buoyage System, preferred-channel-to-port or preferred-channel-to-starboard buoys, when fitted with lights, will show a __________.Not learned 555. Under the IALA Buoyage Systems, a safe water mark may NOT __________.Not learned 556. Under the IALA Buoyage Systems, safe water marks may show a __________.Not learned 557. Under the U.S. Aids to Navigation System, what does a lighted buoy with a spherical topmark mark indicate?Not learned 558. Under the IALA Buoyage Systems, which is TRUE of the topmark of a red and white vertically-striped buoy?Not learned 559. Under the IALA Buoyage System, which topmark shown in illustration D023NG below will be displayed on a safe watermark?Not learned 560. Under the IALA Buoyage Systems, a yellow buoy may mark __________.Not learned 561. Under the IALA cardinal system, what does a mark with a quick white light showing 6 flashes followed by one long flash indicate in relation to the location of the safest water?Not learned 562. In the IALA Maritime Buoyage System, what is a red and white vertically-striped buoy used to indicate?Not learned 563. In the IALA Maritime Buoyage System, what is a red and white vertically-striped buoy used to indicate?Not learned 564. In illustration D009NG below, your position X is at LAT 35° S. Which winds are you experiencing?Not learned 565. Illustration D011NG below represents the geographic location of a vessel and the radar presentation at the same time. Which statement is TRUE?Not learned 566. Illustration D011NG below represents the geographic location of a vessel and the radar presentation at the same time. Which statement is TRUE?Not learned 567. In illustration D039NG below, which number indicates cirrus clouds?Not learned 568. In illustration D039NG below, what type of cloud is indicated by the number five?Not learned 569. In illustration D039NG below, what type of cloud is indicated by the number four?Not learned 570. In illustration D039NG below, what type of cloud is indicated by the number one?Not learned 571. In illustration D044NG below, a pillar buoy is indicated by which letter?Not learned 572. In illustration D044NG below, what type of buoy is indicated by the letter A?Not learned 573. In illustration D045NG below, a green-and-red banded daymark, with the uppermost band green, will have which of the following shapes?Not learned 574. In illustration D045NG below, which shape is a daymark warning of danger?Not learned 575. In illustration D045NG below, what two shapes shown are used to indicate a preferred channel?Not learned 576. In illustration D051NG below what is indicated by the position labeled "C"?Not learned 577. In illustration D051NG below, why was the position labeled "C" plotted?Not learned 578. In illustration D051NG below, why was the position labeled "E" plotted?Not learned 579. In illustration D051NG below, why was the position labeled "D" plotted?Not learned 580. The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is __________.Not learned 581. Which is the most important information to be obtained from a barometer?Not learned 582. An important lunar cycle affecting the tidal cycle is called the nodal period. How long is this cycle?Not learned 583. What is the most important source of information to be used in correcting charts and keeping them up to date?Not learned 584. If it is impossible to avoid a hurricane in the Northern Hemisphere, which is the most favorable place to be when the storm passes?Not learned 585. You are inbound in a channel marked by a range. The range line is 040°T. You are steering 036°T. The range is in sight as shown in illustration D047NG below, and is closing. Which action should you take?Not learned 586. You are inbound in a channel marked by a range. The range line is 309°T. You are steering 306°T and have the range in sight as shown in illustration D047NG below. The range continues to open. What action should you take?Not learned 587. You are inbound in a channel marked by a range. The range line is 216°T. You are steering 213°T and have the range in sight as shown in illustration D048NG below. Which action should you take?Not learned 588. What indicates the arrival of a hurricane within 24 to 36 hours?Not learned 589. What indicates a buoy that should be left to port when entering from seaward? (U.S. Aids to Navigation System)Not learned 590. What indicates a dual-purpose buoy?Not learned 591. What indicates that a tropical cyclone may be within 500 to 1,000 miles of your position?Not learned 592. Which indication on the barometer is most meaningful in forecasting weather?Not learned 593. By what means are indications of the master gyrocompass sent to remote repeaters?Not learned 594. An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer's vessel. Which of the following is NOT a characteristic of indirect echoes?Not learned 595. What will NOT induce errors into a Doppler sonar log?Not learned 596. Where is induced magnetism found?Not learned 597. Information about currents around Pacific Coast ports of the U.S. can be obtained in which publication?Not learned 598. What information is found in the chart title?Not learned 599. What information is NOT found in the chart title?Not learned 600. Which information is found in the chart title?Not learned 601. Which information must automatic identification systems (AIS) automatically provide to appropriately equipped shore stations, vessels and aircraft?Not learned 602. Which of the sources contains information on Northern Right Whales?Not learned 603. Which information does the outer ring of a compass rose on a nautical chart provide?Not learned 604. Information about the pilotage available at Miami harbor may best be obtained from which publication?Not learned 605. Which information is NOT provided in broadcasts by the National Institute of Standards and Technology?Not learned 606. Which information is NOT required to be posted in or near the wheelhouse?Not learned 607. Which text contains information on search and rescue procedures and special, local communications used in Mexican waters?Not learned 608. Which item contains information about temporary, short-term changes affecting the safety of navigation in U.S. waters?Not learned 609. Where can information for updating paper nautical charts primarily be found?Not learned 610. How are you informed of defects or changes in aids to navigation?Not learned 611. You have been informed that dredging operations may be underway in your vicinity. Which buoy indicates the dredging area?Not learned 612. The instrument most commonly used to gather the data for determining the relative humidity is the __________.Not learned 613. An instrument designed to maintain a continuous record of atmospheric pressure is a(n) __________.Not learned 614. An instrument that indicates wind direction is known as a(n) __________.Not learned 615. An instrument that maintains a continuous record of humidity changes is called a __________.Not learned 616. An instrument which maintains a continuous record of temperature changes is called a __________.Not learned 617. Which instrument may a towing vessel, engaged in towing exclusively on the Western Rivers, use in place of a magnetic compass?Not learned 618. What is used to measure wind velocity?Not learned 619. Which instrument is used to measure the relative humidity of the air?Not learned 620. Which instrument is used to predict the approach of a low pressure system?Not learned 621. An instrument useful in predicting fog is the __________.Not learned 622. How is the intensity of a light expressed in the Light Lists?Not learned 623. After inventorying the Naval Control of Shipping publications you find there is no copy of ATP-2, Volume II "Allied Control of Shipping Manual - Bridge Supplement". You should ask for a replacement from the __________.Not learned 624. Isobars on a weather map are useful in predicting which element of the weather?Not learned 625. Isogonic lines are lines on a chart indicating __________.Not learned 626. On an isomagnetic chart, the line of zero variation is the __________.Not learned 627. Which item in illustration D034NG below shows a flashing light?Not learned 628. Which item in illustration D034NG below shows a MorseNot learned 629. Which item in illustration D034NG below shows an occulting light?Not learned 630. After an item of required safety equipment on a towing vessel fails, the owner or Master must consider numerous factors before continuing the voyage. Which factor should NOT be included in his/her decision?Not learned 631. Which is TRUE of a katabatic wind?Not learned 632. Which kind of conditions would you observe as the eye of a storm passes over your vessel's position?Not learned 633. What kind of pressure systems travel in tropical waves?Not learned 634. What kind of weather would you expect to accompany the passage of a tropical wave?Not learned 635. A large automated navigational buoy, such as those that have replaced some lightships, would be shown on a chart by which symbol in illustration D015NG below?Not learned 636. Which is TRUE of a lateral system buoy displaying a quick flashing light?Not learned 637. A latitude line will be obtained by observing a body __________.Not learned 638. The left half of the storm is called the navigable semicircle because __________.Not learned 639. What is the length of a nautical mile?Not learned 640. Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?Not learned 641. What level of development of a tropical cyclone has a hundred mile radius of circulation, gale force winds, less than 990 millibars of pressure and vertically formed cumulonimbus clouds?Not learned 642. A very light breeze that causes ripples on a small area of still water is a known by which term?Not learned 643. The light characteristic of flashing is used in the Aids to Navigation System on the Western Rivers. Which example is required to utilize this characteristic?Not learned 644. Which light characteristic may be used on a special mark?Not learned 645. Which light characteristic may be used on a special purpose mark?Not learned 646. Which term describes a light, feathery deposit of ice by sublimation of water vapor directly into the crystalline form on objects whose temperatures are below freezing?Not learned 647. When a light is first seen on the horizon it will disappear again if the height of eye is immediately lowered several feet. When the eye is raised to its former height the light will again be visible. Which term is given to this process?Not learned 648. Which term is given to a light that has a light period shorter than its dark period?Not learned 649. Which is TRUE concerning Light Lists for coastal waters?Not learned 650. The Light List Does NOT contain information on __________.Not learned 651. The Light List indicates that a dayboard is a type KGW. You should take which action?Not learned 652. The Light List indicates that a dayboard is a type MR. You should take which action?Not learned 653. The Light List indicates that a dayboard is a type NB. You should __________.Not learned 654. The Light List indicates that a dayboard is a type TR-SY. Which action should you take?Not learned 655. The Light List indicates that a light has a nominal range of 14 miles and is 26 feet high. If the visibility is 4 miles and your height of eye is 20 feet, at what approximate distance will you sight the light?Not learned 656. The Light List indicates that a light has a nominal range of 18 miles and is 38 feet high. If the visibility is 6 miles and your height of eye is 15 feet, at which distance will you sight the light?Not learned 657. The Light List indicates that a light has a nominal range of 8 miles and is 48 feet(14.6 meters) high. If the visibility is 6 miles and your height of eye is 35 feet(10.7 meters), at what approximate distance will you sight the light?Not learned 658. The Light List shows a lighted aid to navigation on the left bank. This means that the light can be seen on the port side of a vessel under which condition?Not learned 659. The Light List shows that a navigational light has a nominal range of 10 miles and a height above water of 38 feet (11.6 meters). Your height of eye is 52 feet (15.8 meters) and the visibility is 11.0 miles. At which approximate range will you first sight the light?Not learned 660. The Light List shows that a navigational light has a nominal range of 12 miles and a height above water of 25 feet (7.6 meters). Your height of eye is 30 feet (9.1 meters) and the visibility is 0.5 mile. At what approximate range will you first sight the light?Not learned 661. The Light List shows that a navigational light has a nominal range of 12 miles and a height above water of 25 feet (7.6 meters). Your height of eye is 38 feet (11.6 meters) and the visibility is 5.5 miles. At what approximate range will you FIRST sight the light?Not learned 662. The Light List shows that a navigational light has a nominal range of 18 miles and a height above water of 22 feet (6.7 meters). Your height of eye is 16 feet (4.9 meters) and the visibility is 2.0 miles. At which approximate range will you first sight the light?Not learned 663. The Light List shows that a navigational light has a nominal range of 19 miles and a height above water of 52 feet (15.8 meters). Your height of eye is 42 feet (12.8 meters) and the visibility is 10.0 miles. At what approximate range will you first sight the light?Not learned 664. The Light List shows that a navigational light has a nominal range of 6 miles and a height above water of 18 feet (5.5 meters). Your height of eye is 47 feet (14.3 meters) and the visibility is 1.5 miles. At what approximate range will you first sight the light?Not learned 665. What is the light phase characteristic of a lighted isolated-danger mark?Not learned 666. The light rhythm of MorseNot learned 667. Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?Not learned 668. Which would you expect to see on a lighted preferred-channel buoy?Not learned 669. What is a lighted safe water mark fitted with to aid in its identification?Not learned 670. Lighted white and orange buoys must show which color light?Not learned 671. A lighthouse is 120 feet (36.6 meters) high and the light has a nominal range of 18 miles. Your height of eye is 42 feet (12.8). If the visibility is 11 miles, approximately how far off the light will you be when the light becomes visible?Not learned 672. What is the name given to lines on a chart which connect points of equal magnetic variation?Not learned 673. A line of clouds, sharp changes in wind direction, and squalls are most frequently associated with a(n) __________.Not learned 674. The line connecting the points of the earth's surface where there is no dip is the __________.Not learned 675. A line connecting all possible positions of your vessel at any given time is a __________.Not learned 676. The line which connects the points of zero magnetic dip is __________.Not learned 677. Lines drawn through points on the Earth having the same atmospheric pressure are known by which term?Not learned 678. A line of position is __________.Not learned 679. A line of position from a celestial observation is a segment of which choice?Not learned 680. A line of position formed by sighting two charted objects in line is called a(n) __________.Not learned 681. Lines of position may be __________.Not learned 682. Which term is given to a line on a weather chart connecting places which have the same barometric pressure?Not learned 683. Which list of clouds is in sequence, from highest to lowest in the sky?Not learned 684. A List of Lights entry (L Fl) is a single flashing light which shows a long flash of not less than which duration?Not learned 685. Which of the listed properties does warm air possess?Not learned 686. Little or no change in the barometric reading over a twelve hour period indicates __________.Not learned 687. A local wind which occurs during the daytime and is caused by the different rates of warming of land and water is a __________.Not learned 688. You are located within a stationary high pressure area. Your aneroid barometer is falling very slowly. This indicates a(n) __________.Not learned 689. Which location is a source for an air mass labeled mTw?Not learned 690. At which location is the value of sixty nautical miles per degree of geodetic latitude most correct?Not learned 691. How long would a steady wind need to blow in order to create a wind driven current?Not learned 692. How should a look-out, in the merchant service, report sightings?Not learned 693. A low HDOP (Horizontal Dilution of Precision) number such as 2 indicates a __________.Not learned 694. In low latitudes, the high(s) of the diurnal variation of pressure occur(s) at __________.Not learned 695. In low latitudes, the low(s) of the diurnal variation of pressure occur(s) at __________.Not learned 696. In low latitudes the range of the diurnal variation of pressure is up to __________.Not learned 697. When a low pressure area is approaching, the weather generally __________.Not learned 698. Low pressure disturbances, which travel along the intertropical convergence zone, are called __________.Not learned 699. Which is a low, uniform layer of cloud resembling fog, but not resting on the ground?Not learned 700. The lunar or tidal day is __________.Not learned 701. Magnets in the binnacles of magnetic compasses are used to reduce which effect?Not learned 702. What do the magnets placed in horizontal trays in the compass binnacle compensate for?Not learned 703. Before a magnetic compass is adjusted certain correctors must be checked to ensure that they are free of permanent magnetism. Which are the correctors?Not learned 704. If a magnetic compass is not affected by any magnetic field other than the Earth's, which statement is TRUE?Not learned 705. What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?Not learned 706. Which is TRUE concerning magnetic compass deviation?Not learned 707. The magnetic compass magnets are acted on by the horizontal component of the Earth's total magnetic force. Where is this magnetic force the GREATEST?Not learned 708. What is magnetic dip a measurement of?Not learned 709. At the magnetic equator there is no induced magnetism in the vertical soft iron because __________.Not learned 710. Magnetic information on a chart may be __________.Not learned 711. Magnetic variation changes with a change in __________.Not learned 712. Which term is given to magnetism which is present only when the material is under the influence of an external field?Not learned 713. A major advantage of the NAVTEX system when compared to other systems is that __________.Not learned 714. What is the major limitation in using the Sight Reduction Tables for Air Navigation Volume I (Pub. No. 249) for star sights?Not learned 715. To make sure of getting the full advantage of a favorable current, you should reach an entrance or strait at which time in relation to the predicted time of the favorable current?Not learned 716. When making landfall at night, how can you determine if a light is a major light or an offshore buoy?Not learned 717. When making landfall at night, the light from a powerful lighthouse may sometimes be seen before the lantern breaks the horizon. Which term describes this light?Not learned 718. In many areas "atoll" clouds (clouds of vertical development) are produced over small islands. What causes the development of these clouds?Not learned 719. How many characters does the short text messaging feature of the automatic identification system (AIS) allow for?Not learned 720. How many fixed objects are needed to plot a running fix?Not learned 721. How many high waters usually occur each day on the East Coast of the United States?Not learned 722. How many points are there in a compass card?Not learned 723. How many slack tidal currents usually occur each day on the east coast of the United States?Not learned 724. How many targets can an Electronic Plotting Aid (EPA) track at the same time?Not learned 725. Mariners are FIRST warned of serious defects or important changes to aids to navigation by which means?Not learned 726. Which maritime radio system, consisting of a series of coast stations, transmits coastal warnings?Not learned 727. At the master gyrocompass, the compass card is attached to the __________.Not learned 728. If you are the Master of a towing vessel who’s only working radar no longer functions, what must you do?Not learned 729. Which term is used to express the maximum distance at which a light may be seen under existing visibility conditions?Not learned 730. How may a spherical buoy be identified?Not learned 731. At McAlpine L & D, normal upper pool elevation is 420.0 feet (130.8 meters) MSL, equal to 12.0 feet (3.7 meters) on the upper gage. The vertical clearance at the Clark Memorial Highway bridge is 72.6 feet (22.1 meters) above normal pool. What is the clearance if the gage reads 10.6 feet (3.2 meters)?Not learned 732. At McAlpine L & D, normal upper pool elevation is 420.0 feet MSL, equal to 12.0 feet on the upper gage. The vertical clearance at the Clark Memorial Highway bridge is 72.6 feet above normal pool. What is the clearance if the gauge reads 27.2 feet?Not learned 733. Mean high water is the average height of __________.Not learned 734. What is the reference datum mean high water used to measure?Not learned 735. Which measurement uses mean high water as the reference plane?Not learned 736. Which is TRUE of mean high water?Not learned 737. Mean low water is the average height of __________.Not learned 738. Mean lower low water is the reference plane used for which measurements?Not learned 739. To measure distance on a Mercator chart between the parallels of LAT 34°30'N and LAT 31°30'N, which 30- mile scale should be used?Not learned 740. Which term is given to the mechanical lifting of air by the upslope slant of the terrain?Not learned 741. On a Mercator chart, 1 nautical mile is equal to __________.Not learned 742. Which type of projection is used to make a Mercator chart?Not learned 743. As a Merchant Marine Officer you are expected to be able to do which of the following?Not learned 744. If your mercurial barometer reads 30.50 inches (1033 millibars) and the temperature is 56°F (13°C), what is the correct reading at 55°N, 150°W?Not learned 745. A mercurial barometer at sea is subject to rapid variations in height ("pumping") due to the pitch and roll of the vessel. To avoid this error, measurements of atmospheric pressure at sea are usually measured with a(n) __________.Not learned 746. Which meteorological feature controls the climate of the Gulf of Mexico and the coastal area during late spring and summer?Not learned 747. In a microbarograph, when should the pen be checked and the inkwell filled?Not learned 748. A microbarograph is a precision instrument that provides a __________.Not learned 749. A mid-channel buoy, if lighted, will show a __________.Not learned 750. A millibar is a unit of __________.Not learned 751. In modern fathometers, what produces the sonic or ultrasonic sound waves?Not learned 752. In modern fathometers the sonic or ultrasonic sound waves are produced electrically by means of a(n) __________.Not learned 753. Which is TRUE of Monsoons?Not learned 754. In which month will the equatorial counter current be strongest?Not learned 755. When the Moon's declination is maximum north, which of the following will occur?Not learned 756. When the moon is at first quarter or third quarter phase, what type of tides will occur?Not learned 757. The moon is full and at perigee on 20 January 1983. What is the maximum current you could expect at 2350 (ZD +5) at Nantucket Shoals?Not learned 758. When the moon is new or full, which type of tides occur?Not learned 759. A mooring buoy, if lighted, shows which color light?Not learned 760. A mountain peak charted at 700 feet breaks the horizon, and your height of eye is 12 feet. What is your approximate distance off (choose closest answer)?Not learned 761. The movement of water away from the shore or downstream is called a(n) __________.Not learned 762. What must change for the compass deviation to change?Not learned 763. What must the owner or Master do if any of the towing vessel's required navigational safety equipment fails during a voyage?Not learned 764. Which name is given to the pressure-sensitive element of an aneroid barometer?Not learned 765. Which name is given to the prevailing winds in the band of latitude from approximately 5°N to 30°N?Not learned 766. What is the name of the region of high pressure extending around the Earth at about 35°N latitude?Not learned 767. The National Geospatial-Intelligence Agency (formerly the National Imagery and Mapping Agency) would produce a chart of the coast of which area?Not learned 768. The National Oceanic and Atmospheric Administration publishes which item?Not learned 769. What natural feature is responsible for the rather even climate found on the Florida peninsula throughout the year?Not learned 770. In the Nautical Almanac provided, when would Jupiter and Saturn be visible in temperate latitudes for both evening and morning stars?Not learned 771. On a nautical chart, what does the inner ring of a compass rose indicate?Not learned 772. Which nautical charts are intended for coastwise navigation outside of outlying reefs and shoals?Not learned 773. A nautical mile is a distance of approximately how much greater than or less than a statute mile?Not learned 774. Which of the Nautical Texts is/are published by the U.S. Coast Guard?Not learned 775. Naval Control of Shipping (NCS) publications should be __________.Not learned 776. Which Naval Control of Shipping publication should be aboard your vessel?Not learned 777. Which Naval Control of Shipping publication should be aboard your vessel?Not learned 778. A NAVAREA warning carries the following number: 1986/87 (11). Which statement is TRUE?Not learned 779. The navigable semicircle of a hurricane in the Northern Hemisphere is that area of the storm measured __________.Not learned 780. The navigable semicircle of a tropical storm in the South Indian Ocean is located on which side of the storm's track?Not learned 781. The navigable semicircle of a typhoon in the Southern Hemisphere is the area __________.Not learned 782. When navigating coastwise and hurricane warnings are received, you should __________.Not learned 783. While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 2 1/2 seconds after the signal was sounded. What is the distance to the shore?Not learned 784. While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's foghorn 4 1/2 seconds after the signal was sounded. What is the distance to the shore?Not learned 785. When navigating in high latitudes and using a chart based on a Lambert conformal projection, which is TRUE?Not learned 786. You are navigating in pilotage waters using running fixes. The maximum time between fixes should be about __________.Not learned 787. When navigating using GPS, what is an indicator of the geometry of the satellites that your receiver is locked onto?Not learned 788. Which is TRUE when navigating a vessel?Not learned 789. On navigational aids, what does the light characteristic "Fl(2+1)" mean?Not learned 790. Which navigational equipment is required to be tested and logged before a towing vessel embarks on a voyage of more than 24 hours?Not learned 791. Which navigational mark may only be lettered?Not learned 792. A navigator fixing a vessel's position by radar __________.Not learned 793. When should a navigator rely on the position of floating aids to navigation?Not learned 794. When do neap tides occur?Not learned 795. Neap tides occur when the __________.Not learned 796. When do neap tides occur?Not learned 797. The needle of an aneroid barometer points to 30.05 on the dial. What does this indicate?Not learned 798. NGA (NIMA) charts are adopting the metric system. In order to change a charted depth in meters to feet you may use the conversion table found __________.Not learned 799. NOAA VHF weather reports are continuously broadcast on VHF channels WX-1, WX-2 and WX-3 on a frequency of __________.Not learned 800. In North America, which direction do the majority of the weather systems move?Not learned 801. The north equatorial current flows to the __________.Not learned 802. A "Norther" in the Gulf of Mexico is __________.Not learned 803. In the Northern Hemisphere, an area of counterclockwise wind circulation surrounded by higher pressure is a __________.Not learned 804. In the Northern Hemisphere you are caught in the dangerous semicircle of a storm with plenty of sea room available. Which is the best course of action to take?Not learned 805. In the Northern Hemisphere, when the center of a high-pressure system is due east of your position, you can expect winds from which direction?Not learned 806. In the Northern Hemisphere, gusty winds shifting clockwise, a rapid drop in temperature, thunderstorms or rain squalls in summer (frequent rain/snow squalls in winter) then a rise in pressure followed by clearing skies, indicate the passage of a(n) __________.Not learned 807. In the Northern Hemisphere, where will the largest waves or swells created by a typhoon or hurricane be located?Not learned 808. In the Northern Hemisphere how do the major ocean currents tend to flow?Not learned 809. In the Northern Hemisphere, an observer at point II in illustration D014NG below, should experience a wind shift from what direction?Not learned 810. In the Northern Hemisphere, the right half of the storm is known as the dangerous semicircle. Which statement(s) is/are TRUE?Not learned 811. In the Northern hemisphere which semicircle of a hurricane is the navigable semicircle?Not learned 812. In the Northern Hemisphere, which term is given to a wind that shifts counterclockwise?Not learned 813. You are in the Northern Hemisphere and a tropical wave is located 200 miles due east of your position. Where will the wave be located 12 hours later?Not learned 814. You are in the Northern Hemisphere and a tropical wave is located 200 miles due west of your position. Where will the wave be located 24 hours later?Not learned 815. In the Northern Hemisphere, what type of cloud formations would you expect to see to the west of an approaching tropical wave?Not learned 816. In the Northern Hemisphere, your vessel is believed to be in the direct path of a hurricane, and plenty of sea room is available. The best course of action is to bring the wind on the __________.Not learned 817. In the Northern Hemisphere, if your vessel is in a hurricane's navigable semicircle where should you position the wind relative to the vessel?Not learned 818. Which is TRUE in the Northern Hemisphere when a wind is said to veer?Not learned 819. In the Northern Hemisphere, what do winds veering sharply to the west or northwest with increasing speed indicate?Not learned 820. How can Northern right whales can be identified?Not learned 821. What do the numbers on isobars indicate?Not learned 822. What does the numeral in the center of a wind rose circle on a pilot chart indicate?Not learned 823. A nun buoy will __________.Not learned 824. If you observe a buoy off station which action should you take?Not learned 825. If you observe a rapid fall of barometric pressure, which action should you take?Not learned 826. If an observer in the Northern Hemisphere faces the surface wind, where is the center of low pressure located?Not learned 827. You have been observing your radar screen and notice that a contact on the screen has remained in the same position, relative to you, for several minutes. Your vessel is making 10 knots through the water. Which statement is TRUE?Not learned 828. When observing a rapid rise in barometric pressure, what may you expect?Not learned 829. Which is TRUE of an occulting light?Not learned 830. What occurs when rising air cools to the dew point?Not learned 831. Which ocean current is "warm" based on the latitude in which it originates and on the effect it has on climate?Not learned 832. Ocean currents are well defined and __________.Not learned 833. Ocean swells originating from a typhoon can move ahead of it at speeds near __________.Not learned 834. Which is one of the advantages of a vessel utilizing a NAVTEX unit to receive MSI?Not learned 835. One point of a compass is equal to how many degrees?Not learned 836. When operated over a muddy bottom, a fathometer may indicate which of the following?Not learned 837. On what does the operation of an aneroid barometer depend?Not learned 838. What option does an Electronic Plotting Aid (EPA) not have?Not learned 839. An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol?Not learned 840. An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol?Not learned 841. An orange and white buoy marking a danger area will have what symbol on it?Not learned 842. An orange and white buoy with a rectangle on it displays what information?Not learned 843. In order to get the maximum benefit from the Gulf Stream, on a voyage between Houston and Philadelphia, you should navigate __________.Not learned 844. In order to insure that the racon signal is visible on your 3 cm radar, the __________.Not learned 845. You are outbound in a buoyed channel on course 015°T. You sight a white light showing a MorseNot learned 846. You are outbound in a channel marked by a range astern. The range line is 309°T. You are steering 127°T and have the range in sight as shown in illustration D047NG below. What action should you take?Not learned 847. When outbound from a U.S. port, what does a buoy displaying a flashing red light indicate?Not learned 848. When the owner or Master inspects his/her towing vessel before embarking on a voyage of more than 24 hours, he/she must check all terminal gear EXCEPT __________.Not learned 849. The owner or Master of a towing vessel must ensure that each person that directs and controls the movement of the vessel knows all of the following EXCEPT _________.Not learned 850. The owner or Master of a towing vessel that is operating within a Vessel Traffic Service (VTS) area must report specific information to the service. Which of the following choices is not required to be reported?Not learned 851. The owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accomplish all of the following EXCEPT _________.Not learned 852. The owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accurately fix the vessel's position using all of the following EXCEPT _________.Not learned 853. The owner or Master of a towing vessel shall ensure that all tests and inspections of gear take place. When are these actions required to be logged?Not learned 854. The owner or Master of a towing vessel shall ensure that all tests and inspections of gear take place and are logged __________.Not learned 855. In some parts of the world there is often a slight fall in tide during the middle of the high water period. The effect is to create a longer period of stand at higher water. This special feature is called a(n) __________.Not learned 856. The passing of a low pressure system can be determined by periodically checking the __________.Not learned 857. Which term defines the paths of intended travel between three or more points?Not learned 858. The path that a vessel is expected to follow, represented on a chart by a line drawn from the point of departure to the point of arrival, is known by which term?Not learned 859. When is the peak of the hurricane season in the western North Pacific?Not learned 860. Which refers to the period at high or low tide during which there is no change in the height of the water?Not learned 861. The period of a lighted aid to navigation refers to the __________.Not learned 862. Permanent magnetism is caused by __________.Not learned 863. The permanent magnetism of a vessel may change in polarity due to __________.Not learned 864. The permanent magnetism of a vessel may change in strength due to __________.Not learned 865. The permanent magnetism of a vessel may change in strength due to __________.Not learned 866. A phenomenon where the atmospheric pressure is higher than that of other surrounding regions is called __________.Not learned 867. Which piece of navigational safety equipment is NOT required on towing vessels over 12 meters in length, provided that the vessel remains within the navigable waters of the U.S.?Not learned 868. A pilot chart does NOT contain information about which item?Not learned 869. Plain language is usually used on marine weather __________.Not learned 870. You are planning to enter an unfamiliar U.S. port. Which publication provides information about channel depths, dangers, obstructions, anchorages, and marine facilities available in that port?Not learned 871. You are planning a voyage from New York to Norway via the English Channel. Which publication contains information on the dangers to navigation in the English Channel?Not learned 872. You are planning a voyage from San Francisco to Japan. Which publication contains information on the ocean routes?Not learned 873. You should plot your dead reckoning position __________.Not learned 874. You should plot a dead reckoning position after every __________.Not learned 875. You plot a fix using three lines of position and find they intersect in a triangle. The actual position of the vessel __________.Not learned 876. You plot a fix using three lines of position and find they intersect in a triangle. You should plot the position of the vessel __________.Not learned 877. You are plotting a running fix in an area where there is a determinable current. How should this current be treated in determining the position?Not learned 878. You are plotting a running fix. The LOP to be run forward is an arc from a radar range, what technique should be used?Not learned 879. The points on the earth's surface where the magnetic dip is 90° are __________.Not learned 880. Which term is used to define the point where the vertical rise or fall of tide has stopped?Not learned 881. On the pole side of the high-pressure belt in each hemisphere, the pressure diminishes. The winds along these gradients are diverted by the Earth's rotation toward the east. What is the name of these winds?Not learned 882. On the pole side of the trade wind belt, there is an area of high pressure with weak pressure gradients and light, variable winds. This area is called the __________.Not learned 883. The population of northern right whales, an endangered species, numbers approximately __________.Not learned 884. Port side daymarks may be __________.Not learned 885. Which position includes the effects of wind and current?Not learned 886. A position that is obtained by applying estimated current and wind to your vessel's course and speed is a(n) __________.Not learned 887. Which term is used for a position obtained by applying ONLY your vessel's course and speed to a known position?Not learned 888. Which is the term used for a position obtained by taking lines of position from one object at different times and advancing them to a common time?Not learned 889. A position that is obtained by using two or more intersecting lines of position taken at nearly the same time, is a(n) __________.Not learned 890. When possible, a DR plot should always be started from where?Not learned 891. To predict the actual depth of water using the Tide Tables, how does one use the number obtained from the Tide Tables?Not learned 892. The predicted time that the flood begins at the entrance to Delaware Bay is 1526. You are anchored off Chestnut St. in Philadelphia. If you get underway bound for sea at 1300 and turn for 13 knots, at what point will you lose the flood current?Not learned 893. The predicted time that the flood begins at the entrance to Delaware Bay is 1526. You are anchored off Chestnut St. in Philadelphia. If you get underway bound for sea at 1430 and turn for 11 knots, at what point will you lose the ebb current?Not learned 894. What is the predicted velocity of the tidal current 2 miles west of Southwest Ledge for 2330 DST (ZD +4) on 7 September 1983?Not learned 895. How do preferred channel buoys indicate the preferred channel to transit?Not learned 896. A preferred-channel buoy may be __________.Not learned 897. While preparing to enter a Brazilian port, you see ahead a red and green horizontally-striped buoy. The upper band is red. What action should you take?Not learned 898. You are preparing to take a tow from San Diego to Portland, OR. Good seamanship would require that you have on board, available for reference and use, all of the following EXCEPT the __________.Not learned 899. The presence of stratus clouds and a dying wind will usually result in __________.Not learned 900. Your present weather is sunny with a steady barometer. A low swell approaches your vessel from the south with crests passing at relatively long periods of about four per minute. What does this usually indicate?Not learned 901. The pressure gradient between the horse latitudes and doldrums runs __________.Not learned 902. Pressure gradient is a measure of __________.Not learned 903. When do the prevailing westerlies of the Southern Hemisphere blow 17-27 knots?Not learned 904. Where are the prevailing westerlies of the Southern Hemisphere located?Not learned 905. Prevailing winds between 30°N and 60°N latitude are from which direction?Not learned 906. What is the primary source of the earth's weather?Not learned 907. The principal advantage of NAVTEX radio warnings is that __________.Not learned 908. Prior to reading an aneroid barometer, why should you tap the face lightly with your finger?Not learned 909. The probability of a sudden wind may be foretold by __________.Not learned 910. You are proceeding up a channel at night. It is marked by a range which bears 185°T. You steady up on a compass course of 180° with the range in line dead ahead. This indicates that you(r) __________.Not learned 911. "Proceeding from seaward" for the purpose of the direction of buoying offshore, lateral system buoys would be proceeding ________.Not learned 912. The process by which the temperature and/or moisture characteristics of an air mass changes is called __________.Not learned 913. A psychrometer has two thermometers that provide dry bulb and wet bulb temperatures. What can be determined by comparing these two temperature readings with a set of tables?Not learned 914. Which publication is NOT carried on board U.S. merchant vessels operating under Naval Control of Shipping?Not learned 915. Which publication should you check for complete information on Puget Sound weather conditions?Not learned 916. What publication contains descriptions of the coast line, buoyage systems, weather conditions, port facilities, and navigation instructions for the United States and its possessions?Not learned 917. Which publication contains information on Naval Control of Shipping (NCS) in time of emergency or war?Not learned 918. Which publication contains information on Naval Cooperation and Guidance for Shipping (NCAGS) in time of emergency or war?Not learned 919. Which publication contains information on navigation regulations, landmarks, channels, anchorages, tides, currents, and clearances of bridges for Chesapeake Bay?Not learned 920. What publication contains information about the port facilities in Cadiz, Spain?Not learned 921. Which publication indicates the HYDROLANTS or HYDROPACS issued since the previous working day?Not learned 922. What publication has information on the climate, distances, navigation regulations, outstanding landmarks, channels and anchorages of Long Island Sound?Not learned 923. Which publication lists Class I and II private aids to navigation in or along navigable waters of the United States?Not learned 924. Which publication(s) must a towing vessel of 12 meters or more in length carry when operating on US waters other than the Western Rivers?Not learned 925. Which publication requires infrequent corrections?Not learned 926. Which publication would describe the explosive anchorages in the ports on the east coast of the United States?Not learned 927. Which publication would NOT be used on a voyage from Houston to New York?Not learned 928. What is published by the U.S. Coast Guard?Not learned 929. What is the purpose of the "reference hand" on an aneroid barometer?Not learned 930. The purpose of the soft iron spheres mounted on arms on the binnacle is to compensate for __________.Not learned 931. Quadrantal error in a gyrocompass has its GREATEST effect on which of the following?Not learned 932. Your radar has a beam width of 2°. The radar gyro bearing of the right tangent of an island is 316°. The gyro error is 1° E. Which true bearing should be plotted on the chart?Not learned 933. Which radar control reduces weak echoes out to a limited distance from the ship?Not learned 934. Which radar control shortens all echoes on the display and reduces clutter caused by rain or snow?Not learned 935. Which radar control is used to reduce sea return at close ranges?Not learned 936. Which term is given to a radar display which is oriented, so that north is always at the top of the screen?Not learned 937. Your radar displays your ship off center. As you proceed on your course, your ship's marker moves on the PPI scope while echoes from land masses remain stationary. What is this display called?Not learned 938. Your radar indicates a target; however, there is no visible object at the point indicated. A large mountain, approximately 50 miles away on the same bearing as the target, is breaking the horizon. You should suspect the radar target is caused by __________.Not learned 939. Radar makes the most accurate determination of the __________.Not learned 940. A radar range to a small, charted object such as a light will provide a line of position in which form?Not learned 941. You are radar scanning for a buoy fitted with a racon. In illustration D017NG below, which radar screen represents the presentation you should expect on the PPI?Not learned 942. Your radar is set on a true motion display. Which of the following will appear to move across the PPI scope?Not learned 943. Which is TRUE of Radiation fog?Not learned 944. A rapid rise or fall of the barometer indicates __________.Not learned 945. Which is TRUE of Raster-scan chart data?Not learned 946. What is the reaction of a gyrocompass to an applied force known as?Not learned 947. In reading a weather map, what do closely spaced pressure gradient lines indicate?Not learned 948. The recording fathometer produces a graphic record of the __________.Not learned 949. Recurvature of a hurricane's track usually results in the forward speed __________.Not learned 950. What do red sectors of navigation lights warn mariners of?Not learned 951. A red triangular daymark marks __________.Not learned 952. Which is the reference datum used in determining the heights of land features on most charts?Not learned 953. The refraction correction table given in the Nautical Almanac is based on a standard or average atmospheric density with a temperature of 50°F (10°C) and which atmospheric pressure?Not learned 954. With regard to GPS, a civilian receiver may be capable of achieving the same accuracy as a military receiver if __________.Not learned 955. Which is the region containing 3/4 of the mass of the atmosphere and to which are confined such phenomena as clouds, storms, precipitation and changing weather conditions?Not learned 956. In both regions of the IALA buoyage system, which topmark shown in illustration D022NG below is used on a special mark?Not learned 957. In regions near the poles, how are the winds generally described?Not learned 958. A relative bearing is always measured from __________.Not learned 959. What is the relative bearing of an object on the port beam?Not learned 960. What is the relative bearing of an object broad on the port bow?Not learned 961. What is the relative bearing of an object broad on the port quarter?Not learned 962. What is the relative bearing of an object on the starboard beam?Not learned 963. What is the relative bearing of an object broad on the starboard bow?Not learned 964. What is the relative bearing of an object broad on the starboard quarter?Not learned 965. What is the relative bearing of an object dead astern?Not learned 966. What is the relative bearing of an object sighted dead ahead?Not learned 967. Relative humidity is the percentage of water vapor that is in the air as compared to the maximum amount it can hold at __________.Not learned 968. In the relatively calm area near the hurricane center, the seas are __________.Not learned 969. You have replaced the chart paper in the course recorder. What is NOT required to ensure that a correct trace is recorded?Not learned 970. You have replaced the chart paper in the course recorder. Which statement is TRUE?Not learned 971. You are required to enter a lock on your voyage. Information on the lock regulations, signals, and radio communications can be found in __________.Not learned 972. With respect to automatic identification systems (AIS) which of the following information is broadcast every one to ten seconds?Not learned 973. With respect to automatic identification systems (AIS), which information is expected to be broadcast every 1 to 10 seconds?Not learned 974. With respect to automatic identification systems (AIS), which information is expected to be broadcast every 1 to 10 seconds?Not learned 975. With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?Not learned 976. With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?Not learned 977. With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?Not learned 978. With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.Not learned 979. With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.Not learned 980. With respect to a reversing current, when does slack water occur?Not learned 981. What results when warm moist air blows over a colder surface and is cooled below its dew point?Not learned 982. When is a revised print of a chart made?Not learned 983. The revision date of a chart is printed on which area of the chart?Not learned 984. In some river mouths and estuaries, the incoming high-tide wave crest overtakes the preceding low-tide trough. This results in a wall of water proceeding upstream. Which term describes this occurrence?Not learned 985. In a river subject to tidal currents, the best time to dock a ship without the assistance of tugs is __________.Not learned 986. A rotary current sets through all directions of the compass. How much time does it take to complete one of these cycles, in a locale off the East coast of the U.S.?Not learned 987. On which route is a towing vessel over 39.4 feet in length NOT required to carry an echo-sounding device?Not learned 988. You are running parallel to the coast and estimate that the current is against you. In plotting a running fix using bearings from the same object on the coast, the greatest safety margin from inshore dangers will result if what speed is used to determine the fix?Not learned 989. You are running parallel to the coast and take a running fix using bearings of the same object. Which is TRUE if you are making less speed than used for the running fix, in relation to the position indicated by the fix?Not learned 990. Safe water buoys may show ONLY which type of light?Not learned 991. A safe water daymark has what shape?Not learned 992. A safe water mark may be __________.Not learned 993. How is a safe water mark, that can be passed close aboard on either side, painted and lighted?Not learned 994. You are to sail from Elizabethport, N.J., on 17 November 1983 with a maximum draft of 27 feet. You will pass over an obstruction in the channel near Sandy Hook that has a charted depth of 25.5 feet. The steaming time from Elizabethport to the obstruction is 1h 50m. What is the earliest time (ZD +5) you can sail on 17 November and pass over the obstruction with 2 feet of clearance?Not learned 995. A sailing chart could have which scale?Not learned 996. The Sailing Directions contain information on __________.Not learned 997. The Sailing Directions (Enroute) contain which information?Not learned 998. The Sailing Directions (Enroute) contain information on all of the following EXCEPT which topic of information?Not learned 999. The Sailing Directions (Planning Guide) contain information on all of the following EXCEPT which item?Not learned 1000. The Sailing Directions are published in the Enroute format and which other format?Not learned 1001. If you are sailing from the East Coast of the United States to the Caribbean Sea, which publication would contain information on weather, currents, and storms?Not learned 1002. If you were sailing in the North Pacific and were interested in the ice and iceberg limits, where could you find this information?Not learned 1003. You are sailing south on the Intracoastal Waterway (ICW) when you sight a green can buoy with a yellow square painted on it. Which of the following is TRUE?Not learned 1004. You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow square painted on it. Which of the following is TRUE?Not learned 1005. You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow square painted on it. Which statement is TRUE?Not learned 1006. You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow triangle painted on it. Which statement is TRUE?Not learned 1007. In the Sargasso Sea there are large quantities of seaweed and no well defined currents. This area is located in the __________.Not learned 1008. Scales on aneroid barometers are usually graduated in inches of mercury in the general range of __________.Not learned 1009. The scale on a chart is given as 1:5,000,000. What does this ratio indicate?Not learned 1010. Which scale is used to estimate wind speed by observing sea conditions?Not learned 1011. Which is TRUE of a sea breeze?Not learned 1012. A series of brief showers accompanied by strong, shifting winds may occur along or some distance ahead of a(n) __________.Not learned 1013. The set of the current is the __________.Not learned 1014. Set of the current is __________.Not learned 1015. The set of the North Equatorial Countercurrent is generally in which direction?Not learned 1016. If several navigational lights are visible at the same time, each one may be positively identified by checking all of the following EXCEPT what against the Light List?Not learned 1017. Severe tropical cyclones (hurricanes, typhoons) occur in all warm-water oceans except the __________.Not learned 1018. A ship is on course 195° at a speed of 15 knots. The apparent wind is from 40° on the port bow, speed 30 knots. What are the direction and speed of the true wind?Not learned 1019. Your ship is proceeding on course 320°T at a speed of 25 knots. The apparent wind is from 30° off the starboard bow, speed 32 knots. What is the relative direction, true direction and speed of the true wind?Not learned 1020. If a ship is proceeding towards the magnetic equator, the uncorrected deviation due to permanent magnetism __________.Not learned 1021. Your ship received a HYDROLANT advising of a special warning to mariners from the Department of State for ships in the Persian Gulf. You are 400 miles south of, and bound for, the Persian Gulf. What action should you take?Not learned 1022. Your ship is returning to New Orleans from a foreign voyage and carrying a bulk cargo of anhydrous ammonia. Under what conditions must you must notify the Captain of the Port, New Orleans?Not learned 1023. What does the shoreline on charts generally represent?Not learned 1024. The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean __________.Not learned 1025. You sight a buoy fitted with a double-sphere topmark. If sighted at night, what color and light sequence would you expect to see?Not learned 1026. You sight a spar buoy with the topmark shown in illustration D027NG below. You must take which of the following actions?Not learned 1027. A sign of thunderstorm development is a cumulus cloud __________.Not learned 1028. How will the signal from a ramark show on the PPI?Not learned 1029. A single barometric pressure reading of 28.60 indicates __________.Not learned 1030. A single line of position combined with a dead-reckoning position results in a(n) __________.Not learned 1031. A single vertical magnet placed underneath the compass in the binnacle is used to compensate for __________.Not learned 1032. When slanted letters are used to spell the name of a charted object you know the __________.Not learned 1033. A sling psychrometer is a(n) __________.Not learned 1034. What is a sling psychrometer used to measure?Not learned 1035. What does a slow, gradual fall of the barometer indicate?Not learned 1036. What does a slow rise in the barometric pressure forecast?Not learned 1037. When there are small differences between the heights of two successive high tides or two low tides, in a tidal day, the tides are called __________.Not learned 1038. Small, visible mound-like protuberances on the bottom of cumulonimbus clouds, that are potential breeding grounds for waterspouts and tornadoes, are called __________.Not learned 1039. What do solid green arrows on the main body of a pilot chart indicate?Not learned 1040. Sometimes foreign charts are reproduced by NGA. On such a chart a wire dragged (swept) area may be shown in purple or which other color?Not learned 1041. If a sound signal is emitted from the oscillator of a fathometer, and two seconds elapse before the returning signal is picked up, what depth of water is indicated?Not learned 1042. In which source could you find the number of a chart for a certain geographic area?Not learned 1043. As the South Equatorial Current approaches the east coast of Africa, it divides with the main part flowing south to form which current?Not learned 1044. The southeast trade winds actually blow in which direction?Not learned 1045. In the Southern Hemisphere the wind circulation in a high pressure system rotates in which direction?Not learned 1046. In the Southern Hemisphere winds in a low pressure system rotate in which direction?Not learned 1047. A special mark (yellow buoy), if lighted, may exhibit which light rhythm?Not learned 1048. A special purpose buoy shall be __________.Not learned 1049. What is a "Special Warning"?Not learned 1050. The speed of an ocean current is dependent on __________.Not learned 1051. The speed of sound through ocean water is nearly always __________.Not learned 1052. The speed of sound in water is approximately __________.Not learned 1053. A spherical buoy may be __________.Not learned 1054. The spin axis of a gyroscope tends to remain fixed in space in the direction in which it is started. How does this gyroscope become north seeking so that it can be used as a compass?Not learned 1055. Spoil grounds, anchorage areas, cable areas, and military exercise areas are all marked by yellow buoys. Which special mark on the buoy will indicate the specific area you are in?Not learned 1056. When do Spring tides occur?Not learned 1057. Spring tides occur __________.Not learned 1058. Which is TRUE concerning the occurrence of Spring tides?Not learned 1059. Spring tides are tides that __________.Not learned 1060. Squall lines with an almost unbroken line of threatening dark clouds and sharp changes in wind direction, generally precede which front?Not learned 1061. "Stand" of the tide is that time when __________.Not learned 1062. What is the standard atmospheric pressure as measured in inches of mercury?Not learned 1063. What is the standard atmospheric pressure in millibars?Not learned 1064. How does the standard magnetic compass heading differ from the true heading?Not learned 1065. The Star Lists in the Nautical Almanac are based on which of the following magnitudes?Not learned 1066. A star is observed at lower transit. The line of position derived from this sight is __________.Not learned 1067. Which statement concerning the chartlet in illustration D010NG below is true? (Soundings and heights are in meters)Not learned 1068. Which statement concerning the chartlet seen in illustration D010NG below is TRUE? (Soundings and heights are in meters)Not learned 1069. Which statement concerning current is TRUE?Not learned 1070. Which statement(s) concerning the effect of Coriolis force on ocean currents is(are) correct?Not learned 1071. Which statement concerning GPS is TRUE?Not learned 1072. Which statement describes the prevailing wind direction in mid-winter in the Gulf Coast area?Not learned 1073. Which statement about an estimated position is TRUE?Not learned 1074. Which statement is FALSE concerning the dangerous semicircle of a hurricane?Not learned 1075. Which statement about the Flinders bar of the magnetic compass is CORRECT?Not learned 1076. Which statement about a gnomonic chart is correct?Not learned 1077. Which statement about gyrocompass error is TRUE?Not learned 1078. Which statement about the gyrocompass is FALSE?Not learned 1079. Which statement about radio navigational warnings is TRUE?Not learned 1080. Which statement is TRUE when comparing cold and warm fronts?Not learned 1081. Which statement is TRUE concerning apogean tides?Not learned 1082. Which statement is TRUE concerning the current of the Gulf Stream?Not learned 1083. Which statement is TRUE concerning equatorial tides?Not learned 1084. Which statement is TRUE concerning a Mercator projection?Not learned 1085. Which statement is TRUE for an unlighted, red and green, horizontally-banded buoy with the topmost band red?Not learned 1086. Which is TRUE concerning static crashes on your AM radio?Not learned 1087. The steady current circling the globe at about 60° S is the __________.Not learned 1088. Steady precipitation is typical of __________.Not learned 1089. Steam fog will occur when which conditions exists?Not learned 1090. You sight an isolated danger buoy with a white flashing light showing a group of two flashes. The buoy indicates you should take which action?Not learned 1091. You are steaming on a course of 246°T at 17 knots. At 2107 you observe a lighthouse bearing 207°T. At 2119 the lighthouse bears 179°T. What is your distance off at the second bearing?Not learned 1092. You are steaming on course 126°T at 14.8 knots. At 1022 you sight a buoy bearing 128°T, at a range of 4.8 miles. If you change course at 1026, what true course will you steer to leave the buoy 0.5 mile abeam to port?Not learned 1093. While steaming on course 280°T, you sight a buoy showing a very quick flashing (VQ) white light well to port. Maintaining course, you sight another buoy showing a quick flashing (Q) white light. How should you pass?Not learned 1094. You are steaming west in the South Atlantic in an extratropical cyclonic storm, and the wind is dead ahead. According to the law of Buys Ballot, where does the center of low pressure lie?Not learned 1095. You are steaming southward along the west coast of the United States when you encounter a buoy showing a flashing red light. The buoy should be left on __________.Not learned 1096. You are steaming southward along the west coast of the United States when you encounter a buoy showing a flashing red light. Which is TRUE concerning the buoy?Not learned 1097. You are steaming southward along the west coast of the United States when you sight a buoy showing a flashing green light. How should you pass this buoy?Not learned 1098. You are steaming west in the North Atlantic in an extratropical cyclonic storm, and the wind is dead ahead. According to the law of Buys Ballot, where does the center of low pressure lie?Not learned 1099. You are steaming in a westerly direction along the Gulf Coast. You see ahead of you a lighted buoy showing a red isophase light. Which action should you take?Not learned 1100. What does a steep barometric gradient indicate?Not learned 1101. The steepness of a cold front depends on __________.Not learned 1102. You are steering 142°pgc to make good your desired course. The gyro error is 1°E. The variation is 8°W. What should you steer by standard magnetic compass to make good the desired course? DEVIATION TABLE Magnetic Heading Deviation 120° 4°E 135° 2°E 150° 0Not learned 1103. You are steering 318°psc. A northeasterly wind causes 3° of leeway. The variation is 14°E and the deviation table is extracted below. What will be the true course made good? DEVIATION TABLE Magnetic Heading Deviation 300° 2°E 315° 0 330° 2°WNot learned 1104. While steering a course of 150°T, you wish to observe a body for a latitude check. What would the azimuth have to be?Not learned 1105. While steering a course of 150°T, you wish to observe the Sun for a speed check. What would the azimuth have to be?Not learned 1106. You are steering a course of 316°T, and a light bears 34° on the port bow at 2053. At 2126 the same light bears 68° on the port bow, and you have run 5 miles since the first bearing. What is the ETA when the lighthouse is abeam?Not learned 1107. You are steering a magnetic compass course of 075°. The variation for the area is 10°W, and the compass deviation is 5°E. What is the true course you are steering?Not learned 1108. When you are steering on a pair of range lights and find the upper light is in line above the lower light, you should take which action?Not learned 1109. You are steering a southerly course, and you note that the chart predicts an easterly current. Without considering wind, how may you allow for the set?Not learned 1110. A storm's track is characterized by all of the following except __________.Not learned 1111. Stormy weather is usually associated with regions of __________.Not learned 1112. All straight lines represent great circle tracks on a chart based on which projection?Not learned 1113. Which wind is a strong, often violent, northerly wind occurring on the Pacific coast of Mexico, particularly during the colder months?Not learned 1114. The strongest winds and heaviest rains in a hurricane are found in the __________Not learned 1115. "Surface circulation" is another term for __________.Not learned 1116. The survey information upon which a chart is based is found at which location?Not learned 1117. A survey (special purpose mark) buoy __________.Not learned 1118. A swift current occurring in a narrow passage connecting two large bodies of water, which is produced by the continuously changing difference in height of tide at the two ends of the passage, is called a __________.Not learned 1119. A sylphon cell is a part of which instrument?Not learned 1120. The symbol which appears beside a light on a chart reads "Gp Fl R (2) 10 sec 160 ft 19M". Which characteristic describes the light?Not learned 1121. The symbol which appears beside a light on a chart reads "Gp Fl R (2) 10 sec 160 ft 19M". Which characteristic does the light possess?Not learned 1122. Which symbol represents a 10-fathom curve?Not learned 1123. Which symbol represents a 2-fathom curve?Not learned 1124. Which of the symbols shown in illustration D018NG below represents an occluded front?Not learned 1125. Which of the symbols shown in illustration D018NG below represents a warm front?Not learned 1126. What does the symbol shown in illustration D033NG below indicate on a chart?Not learned 1127. What is a system of reservoirs and connecting tubes in a gyro compass called?Not learned 1128. Which table is NOT found in the U.S. Coast Pilots?Not learned 1129. You take a bearing of 043° and 169° of two objects. What bearing of a third object will give the best fix?Not learned 1130. You take a bearing of 086° of a lighthouse. What bearing of another object would give the best fix?Not learned 1131. You take a bearing of 086° of a lighthouse. Which bearing of another object would give the best fix?Not learned 1132. You take a bearing of 142° and 259° of two objects. Which bearing of a third object will give the best fix?Not learned 1133. You take a bearing of 176° of a lighthouse. What bearing of another object would give the best fix?Not learned 1134. You take a bearing of 176° of a lighthouse. Which bearing of another object would give the best fix?Not learned 1135. You take a bearing of 191° and 313° to two objects. Which bearing of a third object will give the best fix?Not learned 1136. You take a bearing of 264° of a lighthouse. Which bearing of another object would give the best fix?Not learned 1137. You take a bearing of 264° of a lighthouse. What bearing of another object would give the best fix?Not learned 1138. You take a bearing of 313° and 076° of two objects. Which bearing of a third object will give the best fix?Not learned 1139. You take bearings of 313° T and 076° T on two objects. Which bearing of a third object will give the best fix?Not learned 1140. You take a bearing of 356° of a lighthouse. What bearing of another object would give the best fix?Not learned 1141. You take a bearing of 356° of a lighthouse. Which bearing of another object would give the best fix?Not learned 1142. You are taking bearings on two known objects ashore. The BEST fix is obtained when the angle between the lines of position is __________.Not learned 1143. Which is TRUE as the temperature of an air mass decreases?Not learned 1144. Which is TRUE as the temperature of the air reaches the dew point?Not learned 1145. Which term describes the temperature at which the air is saturated with water vapor and below which condensation of water vapor will occur?Not learned 1146. How does the temperature change with the passage of an occluded front?Not learned 1147. Which is TRUE as the temperature for a given mass of air increases?Not learned 1148. Temperature and moisture characteristics are modified in a warm or cold air mass due to which factor?Not learned 1149. Which term defines the difference between the heights of low and high tides?Not learned 1150. The term "flood current" refers to that time when the water __________.Not learned 1151. Which term is given to the vertical angle between the horizontal and the magnetic line of force?Not learned 1152. Which term refers to the direction a current is flowing?Not learned 1153. What does the term "tide" refer to?Not learned 1154. The test of a towing vessel's steering gear control system includes each item EXCEPT __________.Not learned 1155. Which theoretical minimum number of measurements from satellites does a GPS receiver need in order to provide an exact three-dimensional position?Not learned 1156. Which is TRUE of the tides in Boston Harbor?Not learned 1157. At what time after 1400 EST (ZD +5), on 4 January 1983, will the height of the tide at Port Wentworth, GA, be 3.0 feet?Not learned 1158. The time meridian that is used when computing the currents for Pensacola Bay, Florida, is __________.Not learned 1159. Which time meridian is used when computing the velocity of the current for Pensacola Bay, Florida?Not learned 1160. Which time meridian is used for tide computations in New York Harbor?Not learned 1161. The time required for a lighted aid to complete a full cycle of light changes is listed in the Light List as the __________.Not learned 1162. Time signals broadcast by WWV and WWVH are transmitted __________.Not learned 1163. Which topmark shown in illustration D023NG below identifies an isolated danger?Not learned 1164. When a tornado moves over the water from land it is called a __________.Not learned 1165. The total magnetic effects which cause deviation of a vessel's compass can be broken down into a series of components which are given which term?Not learned 1166. Towing vessels of more than 39.4 feet in length must carry charts or maps __________.Not learned 1167. Which towing vessel(s) is/are exempt from carrying radar?Not learned 1168. A towing vessel is NOT required to be fitted with radar if it is __________.Not learned 1169. A towing vessel is NOT required to be fitted with radar if it is __________.Not learned 1170. The track line on the chart is 274°T. Variation is 4°E, and deviation is 2°E. The gyro error is 1.5°E. What course would be steered by gyrocompass to make good the desired course?Not learned 1171. You will transit the Cape Cod Canal on 7 November 1983. If you arrive at the R R Bridge at 1655 EST (ZD +5), for what period of time during your transit will you have currents of not more than 0.5 knot?Not learned 1172. On a transpacific voyage, you receive a message from your vessel's operators saying that your vessel has been consigned to voluntary Naval Cooperation and Guidance for Shipping (NCAGS). Where can further information be located?Not learned 1173. A triangular daymark would be colored __________.Not learned 1174. Tropical cyclones are classified by form and intensity. Which system does not have closed isobars?Not learned 1175. Tropical cyclones do not form within 5° of the Equator because __________.Not learned 1176. Tropical cyclones normally form within which of the following belts of latitude?Not learned 1177. In a tropical cyclone, in the Northern Hemisphere, a vessel hove to with the wind shifting counterclockwise is located in which position?Not learned 1178. Tropical storms and hurricanes are most likely to form in the Southern hemisphere during which months?Not learned 1179. A tropical storm is a tropical cyclone that generates winds of which speed?Not learned 1180. A tropical wave is usually preceded by __________.Not learned 1181. A true bearing of a charted object, when plotted on a chart, will establish a __________.Not learned 1182. Which is TRUE if the compass error of a magnetic compass has no deviation?Not learned 1183. What is NOT true concerning color sectors of lights?Not learned 1184. Which is TRUE concerning daymarks marking the starboard side of the channel when going towards the sea?Not learned 1185. What is TRUE concerning new editions of Light Lists?Not learned 1186. Which is TRUE concerning Wind velocity?Not learned 1187. The true course between two points is 312°. Your gyrocompass has an error of 3°W. You make an allowance of 4° leeway for a west by south wind. What gyro course should be steered to make the true course good?Not learned 1188. What is true about a front?Not learned 1189. True heading differs from magnetic heading by __________.Not learned 1190. What is TRUE of the history display of a target's past positions on an ARPA?Not learned 1191. Which is TRUE of a nun buoy in the IALA Region B system of buoyage?Not learned 1192. Which is TRUE of a preferred-channel buoy?Not learned 1193. Which is TRUE when using the radar for navigation?Not learned 1194. Which is TRUE of the velocity of the current in large coastal harbors?Not learned 1195. Which is TRUE of a vertically-striped buoy?Not learned 1196. When trying to sight a lighthouse you notice a glare from a town in the background. How does this affect the range at which the light may be sighted?Not learned 1197. Which are the two most effective generating forces of surface ocean currents?Not learned 1198. Two well-developed high-pressure areas may be separated by which item?Not learned 1199. Two well-developed low pressure areas may be separated by a __________.Not learned 1200. Which type of cloud is among the most dependable for giving an indication of an approaching weather system?Not learned 1201. What type of clouds are associated with a cold front?Not learned 1202. Which type of cloud is the classic "thunderhead"?Not learned 1203. Which type of cloud is composed entirely of ice crystals and is found at very high altitudes?Not learned 1204. Which type of cloud formation should be of immediate concern to small craft operators?Not learned 1205. From which type of cloud can a tornado or waterspout develop?Not learned 1206. The type of current which will have the greatest effect on the course made good for your vessel is __________.Not learned 1207. Which type of daymark is used to mark the starboard side of the channel when entering from sea?Not learned 1208. Which type of fog occurs on clear nights with very light breezes and forms when the earth cools rapidly?Not learned 1209. Which type of front forms when a cold front overtakes and forces a warm front upwards?Not learned 1210. Which type of frontal passage is associated with a relatively narrow band of precipitation?Not learned 1211. Which type of GPS receiver has at least four channels to process information from several satellites simultaneously?Not learned 1212. Which type of precipitation occurs only in thunderstorms with strong convection currents that convey raindrops above and below the freezing level?Not learned 1213. Which type of precipitation is a product of the violent convection in thunderstorms?Not learned 1214. Which type of weather could you expect soon after seeing "hook" or "comma" shaped cirrus clouds?Not learned 1215. The typical operating range of automatic identification systems (AIS) at sea is nominally __________.Not learned 1216. What is typical of warm front weather conditions?Not learned 1217. What U.S. agency is responsible for NAVAREA warnings?Not learned 1218. Under the U.S. Aids to Navigation System, which category is a yellow buoy?Not learned 1219. In the U.S. Aids to Navigation System, lateral aids as seen entering from seaward will display lights with which characteristic?Not learned 1220. In the U.S. Aids to Navigation System, what do red and green horizontally-banded buoys mark?Not learned 1221. Under the U.S. Aids to Navigation System, a special mark possesses which of the following characteristics?Not learned 1222. On U.S. charts, how you can tell if a named feature such as a rock (i.e. Great Eastern Rock in Block Island Sound) is submerged?Not learned 1223. The U.S. Coast Guard publishes __________.Not learned 1224. You are underway in an area where the charted depth is 8 fathoms. You compute the height of tide to be -4.0 feet. The draft of your vessel is 5.0 feet (1.52 meters). You determine the depth of the water beneath your keel to be __________.Not learned 1225. While underway, automatic identification systems (AIS) broadcast all of the following information every 1 to 10 seconds EXCEPT the __________.Not learned 1226. You are underway on course 000°T at 9.5 knots. The current is 082°T at 1.1 knots. What is the speed being made good?Not learned 1227. You are underway on course 017°T at a speed of 14.2 knots. You sight a buoy bearing 025°T at a radar range of 3.7 miles at 1947. If you change course at 1953, what is the course to steer to leave the buoy abeam to starboard at 0.1 mile?Not learned 1228. You are underway on course 050° T and your maximum speed is 10 knots. The eye of a hurricane bears 100° T, 90 miles from your position. The hurricane is moving towards 285° T at 19 knots. Which course should you steer at 10 knots to have the maximum CPA?Not learned 1229. You are underway on course 050°T and your maximum speed is 10 knots. The eye of a hurricane bears 100°T, 90 miles from your position. The hurricane is moving towards 285°T at 19 knots. If you maneuver at 10 knots to avoid the hurricane, what could be the maximum CPA?Not learned 1230. You are underway on course 050°T and your maximum speed is 11 knots. The eye of a hurricane bears 070°T, 80 miles from your position. The hurricane is moving towards 270°T at 19 knots. What course should you steer at 11 knots to have the maximum CPA?Not learned 1231. You are underway on course 050°T and your maximum speed is 11 knots. The eye of a hurricane bears 070°T, 80 miles from your position. The hurricane is moving towards 270°T at 19 knots. If you maneuver at 11 knots to avoid the hurricane, what could be the maximum CPA?Not learned 1232. You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 080°T, 100 miles from your position. The hurricane is moving towards 265°T at 22 knots. What course should you steer at 12 knots to have the maximum CPA?Not learned 1233. You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 080°T, 100 miles from your position. The hurricane is moving towards 265°T at 22 knots. If you maneuver at 12 knots to avoid the hurricane, what could be the maximum CPA?Not learned 1234. You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 120°T, 110 miles from your position. The hurricane is moving towards 285°T at 25 knots. What course should you steer at 12 knots to have the maximum CPA?Not learned 1235. You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 120°T, 110 miles from your position. The hurricane is moving towards 285°T at 25 knots. If you maneuver at 12 knots to avoid the hurricane, what could be the maximum CPA?Not learned 1236. You are underway on course 050°T and your maximum speed is 13 knots. The eye of a hurricane bears 100°T, 120 miles from your position. The hurricane is moving towards 275°T at 25 knots. What course should you steer at 13 knots to have the maximum CPA?Not learned 1237. You are underway on course 050? T and your maximum speed is 13 knots. The eye of a hurricane bears 100? T, 120 miles from your position. The hurricane is moving towards 275? T at 25 knots. If you maneuver at 13 knots to avoid the hurricane, what could be the maximum CPA?Not learned 1238. You are underway on course 050°T and your maximum speed is 13 knots. The eye of a hurricane bears 120°T, 100 miles from your position. The hurricane is moving towards 265°T at 25 knots. What course should you steer at 13 knots to have the maximum CPA?Not learned 1239. You are underway on course 241°T at a speed of 18.2 knots. You sight a daymark bearing 241°T at a radar range of 3.9 miles at 1006. If you change course at 1009, what is the course to steer to leave the daymark abeam to starboard at 1.0 mile?Not learned 1240. You are underway on course 120°T and can make 12 knots. The eye of a hurricane bears 150°T at 120 miles. The hurricane is on course 295° at 20 knots. What course should you steer at 12 knots to have the maximum CPA?Not learned 1241. You are underway on course 120°T and your maximum speed is 12 knots. The eye of a hurricane bears 150°T, 120 miles from your position. The hurricane is moving towards 295°T at 20 knots. If you maneuver at 12 knots to avoid the hurricane, what could be the maximum CPA?Not learned 1242. You are underway on course 128°T at a speed of 17.6 knots. You sight a daymark bearing 126°T at a radar range of 4.3 miles at 1649. If you change course at 1654, what is the course to steer to leave the daymark abeam to starboard at 0.5 mile?Not learned 1243. You are underway on course 160°T while turning for an engine speed of 10 knots. The current is 210°T at 0.9 knots. What is the speed being made good?Not learned 1244. You are underway on course 215°T at 12 knots. The current is 000°T at 2.3 knots. What is the course made good?Not learned 1245. You are underway on course 215°T while turning for an engine speed of 12 knots. The current is 000°T at 2.3 knots. What is the speed being made good?Not learned 1246. You are underway on course 315°T at 14 knots. The current is 135°T at 1.9 knots. What is the speed being made good?Not learned 1247. You are underway and intend to make good a course of 040°T. You experience a current with a set and drift of 190°T at 1.4 knots, and a northwest wind produces a leeway of 3°. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 10 knots. What will be your speed made good over your intended course of 040°T?Not learned 1248. You are underway and pass by a lighthouse. Its light, which was white since you first sighted it, changes to red. What does this indicate?Not learned 1249. While underway, a vessel over 100,000 gross tons with an automatic identification systems (AIS) is expected to broadcast all of the following information every 1 to 10 seconds EXCEPT __________.Not learned 1250. You are underway in a vessel with a draft of 6.0 feet. You are in an area where the charted depth of the water is 4 fathoms. You would expect the depth of water beneath your keel to be approximately __________.Not learned 1251. You are underway in a vessel with a draft of 7.0 feet (2.1 meters). The charted depth for your position is 9 fathoms. You compute the height of tide to be +3.0 feet (0.9 meters). You determine the depth of the water beneath your keel to be __________.Not learned 1252. Under the Uniform State Waterway Marking System how is a mooring buoy painted?Not learned 1253. In the United States, who broadcasts the short-range radio navigational warnings?Not learned 1254. In United States waters, a buoy having red and white vertical stripes if lighted, it will have which light characteristic?Not learned 1255. It is unlawful to approach within how many yards of a Northern Right Whale?Not learned 1256. When using an ARPA, what should you consider in order to evaluate the information displayed?Not learned 1257. When using the ARPA in heavy rain, which action should you take?Not learned 1258. When using a buoy as an aid to navigation which of the following should be considered?Not learned 1259. When using an echo sounder in deep water, it is NOT unusual to encounter which situation?Not learned 1260. When using GPS, how many theoretical position lines are required for a two-dimensional fix?Not learned 1261. When using GPS without Selective Availability, what can you expect your horizontal accuracy to be of the unit?Not learned 1262. When using horizontal sextant angles of three objects to fix your position, an indeterminate position will result in which situation?Not learned 1263. When using a Lambert conformal chart in high latitudes, which reference is used to measure angles such as bearings or courses?Not learned 1264. You are using a radar in which your own ship is shown at the center, and the heading flash always points to 0°. If bearings are measured in relation to the flash, what type of bearings are produced?Not learned 1265. When using a radar in an unstabilized mode, fixes are determined most easily from __________.Not learned 1266. When using a recording depth finder in the open ocean, what phenomena is most likely to produce a continuous trace that may not be from the actual ocean bottom?Not learned 1267. The usual sequence of directions in which a tropical cyclone moves in the Southern Hemisphere is __________.Not learned 1268. When utilizing a Pacific Coast chart, which is the reference plane of soundings?Not learned 1269. The values of the Greenwich hour angle and declination, tabulated in all almanacs, are for the _________.Not learned 1270. The value of sixty nautical miles per degree of geodetic latitude is most correct at __________.Not learned 1271. Variation is the angular measurement between which two points?Not learned 1272. Variation is a compass error that you __________.Not learned 1273. Variation is not constant; it is different with every change in __________.Not learned 1274. How is variation indicated on a small-scale nautical chart?Not learned 1275. What will a veering wind do?Not learned 1276. The velocity of the apparent wind can be less than the true wind and from the same direction, if certain conditions are present. One condition is that the _________.Not learned 1277. The velocity of the apparent wind can be more than the true wind, and come from the same direction, if certain conditions are present. One condition is that the __________.Not learned 1278. The velocity of a rotary tidal current will be decreased when the Moon is at which phase?Not learned 1279. The velocity of a rotary tidal current will increase when the Moon is at which phase?Not learned 1280. What will be the velocity of the tidal current at Grant's Tomb, 123rd Street, NY, NY, at 1412 EST (ZD +5) on 22 March 1983?Not learned 1281. What will be the velocity of the tidal current at Port Jefferson Harbor Entrance, NY, at 1600 EST (ZD +5) on 23 December 1983?Not learned 1282. The vertical component of the Earth's magnetic field causes induced magnetism in vertical soft iron. This changes with latitude. What corrects for this coefficient of the deviation?Not learned 1283. Your vessel has changed course and is heading 285°T, you are on the charted range and it appears as in illustration D048NG below. After several minutes the range appears as in illustration D047NG below and your heading is still 285°T. What does this indicate?Not learned 1284. Your vessel is on a course of 082°T at 19 knots. At 0255 a light bears 059.5°T, and at 0312 the light bears 037°T. At what time and distance off will your vessel be when abeam of the light?Not learned 1285. Your vessel is on course 150°T, speed 17 knots. The apparent wind is from 40° off the starboard bow, speed 15 knots. What is the speed of the true wind?Not learned 1286. Your vessel is on course 180°T speed 22 knots. The apparent wind is from 70° off the port bow, speed 20 knots. What are the true direction and speed of the wind?Not learned 1287. Your vessel is on course 270°T, speed 10 knots. The apparent wind is from 10° off the port bow, speed 30 knots. From which direction is the true wind?Not learned 1288. Your vessel is on a course of 343°T at 14 knots. At 2156 a light bears 320.5°T, and at 2217 the light bears 298°T. At what time and distance off will your vessel be when abeam of the light?Not learned 1289. Your vessel has a draft of 34 feet. On 8 October 1983 you wish to pass over an obstruction near Jaffrey Point, NH, that has a charted depth of 31 feet. Allowing for a safety margin of 3 feet, what is the earliest time after 0900 DST (ZD +4) that this passage can be made?Not learned 1290. Your vessel is located at position I on the weather map in illustration D013NG below. You should experience which weather condition?Not learned 1291. Your 1600 GRT vessel will be entering the navigable waters of the United States. You are required by regulations to take which action?Not learned 1292. Your vessel is entering port when you change course and steady up on a range with the lights in line. After a few minutes you observe the range lights as shown in illustration D047NG below. How should your heading be altered?Not learned 1293. Your vessel is entering port and you have steadied up on a range, dead ahead, in line with your keel. After a few minutes the range, still dead ahead, appears as shown in illustration D047NG below. Which action should you take?Not learned 1294. Your vessel goes aground in soft mud. You would have the best chance of refloating it on the next tide if it grounded at __________.Not learned 1295. A vessel heading NW is on a course of __________.Not learned 1296. As your vessel is heading southward along the east coast of the United States, you encounter a buoy showing a red flashing light. How should you pass this buoy?Not learned 1297. A vessel heading WNW is on which course?Not learned 1298. Your vessel is leaving New York harbor in dense fog. As the vessel slowly proceeds toward sea, you sight a green can buoy on the starboard bow. Which action should you take?Not learned 1299. Vessels should maintain a sharp lookout, especially during December through March, when navigating the Northern Right Whale's only known calving grounds. Where are the calving grounds located?Not learned 1300. Your vessel is making way through the water at a speed of 12 knots. Your vessel traveled 30 nautical miles in 2 hours 20 minutes. What current are you experiencing?Not learned 1301. When your vessel is on or near the path of an approaching tropical storm the __________.Not learned 1302. A vessel's position should be plotted using bearings of __________.Not learned 1303. Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 014°T, and the variation is 11°E. If the heading of your vessel at the time of the sighting is 009° per standard magnetic compass, what is the correct deviation?Not learned 1304. Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 343°T, and the variation is 5° west. If the heading of your vessel at the time of the sighting is 344° per standard magnetic compass, what is the correct deviation?Not learned 1305. Your vessel is proceeding up a channel steering on a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 249°T, and the variation is 14°E. If the heading of your vessel at the time of the sighting is 226° per standard magnetic compass, what is the correct deviation?Not learned 1306. Vessels required to have an Automatic Radar Plotting Aid must have a device to indicate the __________.Not learned 1307. Vessels required to have an Automatic Radar Plotting Aid must have a device to indicate which of the following?Not learned 1308. Vessel required to have an Electronic Plotting Aid (EPA) must have a device to indicate the __________.Not learned 1309. A vessel sighting a northern right whale dead ahead should __________.Not learned 1310. Your vessel is steering 096°T at 17 knots. At 1847 a light bears 057°T, and at 1916 the same light bears 033°T. What will be your distance off abeam?Not learned 1311. Your vessel is steering 143°T at 16 knots. At 2147 a light bears 106°T and at 2206 the same light bears 078°T. What will be your distance off when abeam?Not learned 1312. Your vessel is steering course 027° per standard magnetic compass (psc), variation for the area is 19°W, and deviation is 2°E. The wind is from the north-northwest, producing a 5° leeway. What true course are you making good?Not learned 1313. Your vessel is steering course 149°psc, variation for the area is 13°E, and deviation is 4°E. The wind is from the northeast, producing a 4° leeway. What true course are you making good?Not learned 1314. Your vessel is steering course 197°psc, variation for the area is 7°E, and deviation is 4°W. The wind is from the west, producing a 2° leeway. Which true course are you making good?Not learned 1315. When your vessel is on the storm track but behind the storm's center the __________.Not learned 1316. How does visibility change after the passage of a cold front?Not learned 1317. On a voyage from Cape Town to London, which would be a favorable ocean current off the coast of Africa?Not learned 1318. On a voyage from Halifax, N.S., to Dakar, West Africa, the Canary Current will __________.Not learned 1319. You are on a voyage from New Orleans to Boston and navigating off the Florida coast. You will get the greatest benefit from the Gulf Stream if you navigate __________.Not learned 1320. You are on a voyage from New Orleans to Boston. When navigating off the Florida coast, you will get the greatest benefit from the Gulf Stream if you navigate __________.Not learned 1321. When a warm air mass is adjacent to a cold air mass, the separation line between the two is called a(n) __________.Not learned 1322. A warm air mass is characterized by __________.Not learned 1323. Warm air masses will generally have __________.Not learned 1324. When a warm air mass overtakes a cold air mass, which term is given to the contact surface?Not learned 1325. As a warm front approaches how does barometric pressure change?Not learned 1326. While on watch, you notice that the air temperature is dropping and is approaching the dew point. Which type of weather should be forecasted?Not learned 1327. If your weather bulletin shows the center of a low-pressure area to be 100 miles due east of your position, what winds can you expect in the Northern Hemisphere?Not learned 1328. If a weather bulletin shows the center of a low-pressure system to be 100 miles due east of you, what winds can you expect in the Southern Hemisphere?Not learned 1329. What weather change accompanies the passage of a cold front in the Northern Hemisphere?Not learned 1330. Weather conditions in the middle latitudes generally move in which direction?Not learned 1331. Which weather element cannot be measured accurately while on board a moving vessel?Not learned 1332. Which weather element cannot be measured accurately while on board a moving vessel?Not learned 1333. A weather forecast states that the wind will commence backing. What does this indicate if you are in the Northern Hemisphere?Not learned 1334. A weather forecast states that the wind will commence veering. In the Northern Hemisphere, what changes will occur?Not learned 1335. When does a weather front exist?Not learned 1336. Weather information is available from __________.Not learned 1337. Weather information provided by the National Weather Service (NWS) advisories should be used along with which other source of information?Not learned 1338. Weather patterns in the Gulf of Mexico area of the United States are _____.Not learned 1339. In a weather report, the term "visibility" expresses __________.Not learned 1340. Weather systems in the middle latitudes generally travel from __________.Not learned 1341. Which weather system produces strong cold winds called "Northers" during the winter months in the Gulf of Mexico?Not learned 1342. Which is a weekly publication advising mariners of important matters affecting navigational safety?Not learned 1343. Where is the West Wind Drift located?Not learned 1344. What does a white buoy with a blue band signify?Not learned 1345. What does a white buoy with an open-faced orange diamond on it indicate?Not learned 1346. What does a white buoy with an orange circle marked on it indicate?Not learned 1347. What does a white buoy with an orange cross within a diamond marked on it indicate?Not learned 1348. What does a white buoy with an orange rectangle on it indicate?Not learned 1349. What does a white diamond daymark with an orange border indicate?Not learned 1350. White lights may be found on which buoys?Not learned 1351. What do widely spaced isobars on a weather map indicate?Not learned 1352. Wind direction may be determined by observing all of the following EXCEPT __________.Not learned 1353. Which winds have the greatest effect on the set, drift, and depth of the equatorial currents?Not learned 1354. Which wind pattern has the most influence over the movement of frontal weather systems over the North American continent?Not learned 1355. Which wind results from a land mass cooling more quickly at night than an adjacent water area?Not learned 1356. What wind reverses directions seasonally?Not learned 1357. The winds of the "roaring forties" are strongest near which latitude?Not learned 1358. The wind speed and direction observed from a moving vessel is known as __________.Not learned 1359. What does a wind vane on a moving vessel show?Not learned 1360. The wind velocity is higher in the dangerous semicircle of a tropical cyclone because of the __________.Not learned 1361. During the winter months, the southeast trade winds are __________.Not learned 1362. You wish to check the deviation of your standard magnetic compass. You find a natural range that you steer for and note that the gyrocompass heading is 034°, and the heading by standard magnetic compass is 026°. The gyro error is 1°W. Variation is 9°E. What is the deviation for that heading?Not learned 1363. You wish to make good a course of 035°T while turning for an engine speed of 12 knots. The set is 340°T, and the drift is 2 knots. What course should you steer?Not learned 1364. You wish to make good a course of 035°T while turning for an engine speed of 12 knots. The set is 340°T, and the drift is 2 knots. What speed will you make good along the track line?Not learned 1365. You wish to make good a course of 053°T while turning for an engine speed of 16 knots. The set is 345°T, and the drift is 2.4 knots. What speed will you make good along the track line?Not learned 1366. You wish to measure the distance on a Mercator chart between a point in latitude 42°30'N and a point in latitude 40°30'N. To measure 30 miles at a time where should you set the points of the dividers to obtain the most accuracy?Not learned 1367. You wish to measure the distance on a Mercator chart between a point in latitude 43°30'N and a point in latitude 40°30'N. To measure 30 miles at a time, where should you set the points of the dividers to obtain the most accurate measurement?Not learned 1368. If within 500 yards (460m) of a Northern Right Whale, you are lawfully obligated to take which actions?Not learned 1369. The world is divided into NAVAREAS for the dissemination of important marine information. Which NAVAREAS include the U.S. coasts?Not learned 1370. Which would you consult for information about the general current circulation in the North Atlantic Ocean?Not learned 1371. Where would you expect to find climatological and meteorological tables for the Gulf Coast area?Not learned 1372. Where would you find information about the time of high tide at a specific location on a particular day of the year?Not learned 1373. Where would you obtain data on currents for areas of the world not covered by the U.S. National Ocean Service?Not learned 1374. Which would be the subject of a NAVAREA warning?Not learned 1375. Yellow lights may appear on which buoys?Not learned 1376. Yesterday your chronometer read 02h 59m 58s at the 1500 GMT time tick. Today the chronometer reads 03h 00m 02s at the 1500 GMT time tick. What is the chronometer error?Not learned 1377. Yesterday your chronometer read 03h 01m 56s at the 1500 GMT time tick. Today your chronometer read 03h 01m 54s at the 1500 GMT time tick. What is the chronometer rate?Not learned 1378. Yesterday your chronometer read 03h 01m 56s at the 1500 GMT time tick. Today your chronometer read 03h 01m 58s at the 1500 GMT time tick. What is the chronometer error?Not learned 1379. Yesterday your chronometer read 11h 59m 58s at the 1200 GMT time tick. Today your chronometer reads 12h 00m 00s at the 1200 time tick. What is the chronometer rate?Not learned 1380. Yesterday your chronometer read 11h 59m 59s at the 1200 GMT time tick. Today the chronometer reads 11h 59m 57s at the 1200 time tick. What is the chronometer rate?Not learned 1381. Yesterday you took a time tick using the 1200 GMT broadcast, and the chronometer read 11h 59m 59s. Today at the 1200 GMT time tick the chronometer read 00h 00m 01s. What is the chronometer error?Not learned 1382. On 6 July 1983, at 1830 DST (ZD +4), what will be the predicted height of tide at Newburgh, NY?Not learned 1383. While on a course of 152°T, a light bears 9° on the port bow at a distance of 11.6 miles. What course should you steer to pass 3 miles abeam of the light leaving it to port?Not learned 1384. You desire to make good a true course of 007°. The variation is 5°E, magnetic compass deviation is 3°W, and gyrocompass error is 2°E. A southwest by west wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?Not learned 1385. You desire to make good a true course of 174°. The variation is 17°W, magnetic compass deviation is 4°W, and gyrocompass error is 4°E. A west-southwest wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?Not learned 1386. The vessel's true course is 071°. Variation is 14°E. Deviation is 4°W. A northerly breeze causes 2° leeway. What course would you steer psc in order to make good the true course?Not learned 1387. Your ship is entering port from sea, and you sight a pair of range lights. When in line, they bear 315° per standard magnetic compass. The chart shows that the range bearing is 312°T, and that variation is 6°W. What is the deviation of your compass at the time of the sighting?Not learned 1388. You are steaming on a course of 208°T at 21 knots. At 2019 you observe a lighthouse bearing 129°T. At 2030 the lighthouse bears 103°T. What is your distance off at the second bearing?Not learned 1389. What will be the time after 0800 EST (ZD +5) that the height of the tide at South Freeport, ME, will be 6.0 feet (1.8 meters) on 7 November 1983?Not learned 1390. (5.9.2.3-11) What will be the time after 1000 EST (ZD +5), on 4 March 1983, that the height of the tide at City Island, NY, will be 2.4 feet?Not learned 1391. What will be the velocity of the tidal current 6 miles south of Shoal Point, NY, at 1850 DST (ZD +4) on 9 July 1983?Not learned 1392. What will be the velocity of the tidal current in Bolivar Roads, Texas, at a point 0.5 mile north of Ft. Point, on 23 November 1983 at 0330 CST (ZD +6)?Not learned 1393. What will be the velocity of the tidal current southwest of Hunts Point, NY, at 0932 EST (ZD +5) on 16 March 1983?Not learned 1394. Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 311°T, and the variation is 8°E. If the heading of your vessel at the time of the sighting is 305° per standard magnetic compass, what is the correct deviation?Not learned 1395. Your vessel is steering course 243°psc. Variation for the area is 5°E, and deviation is 2°W. The wind is from the south-southeast, producing a 2° leeway. What true course are you making good?Not learned 1396. What would be the height of the tide at Crisfield, MD, at 0310 DST (ZD +4) on 6 May 1983?Not learned 1397. Which installed equipment on a towing vessel must be tested and logged when a new Master assumes command?Not learned 1398. Which statement(s) is/are TRUE concerning radio equipment on towing vessels of 26 feet or more in length?Not learned 1399. When steering a vessel, which of the following will an effective helmsman do?Not learned 1400. If the magnetic heading is greater than the compass heading, what direction is the deviation?Not learned 1401. What are the quadrantal spheres used for?Not learned 1402. What is the difference between magnetic heading and compass heading called?Not learned 1403. Which of the following is a compass card without north-seeking capability that is used for relative bearings?Not learned 1404. On 10 November 2023 at 0130, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). What is the direction and velocity of the current you are encountering as you pass Buoy “10”Not learned 1405. On 10 November 2023 at 0630, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). Your vessel will transit 15nm and make good 12.5 knots to a berth where the nearest tidal current station is ACT6706. What will be the direction and velocity of the current as you approach the dockNot learned 1406. On 15 October 2023, you will be docking on the Southern Branch Elizabeth River, VA at the second high tide. The berth is located between NOAA reference tidal station #8638660 and reference station #8639348. What time (LST) will you be dockingNot learned 1407. On 5 October 2023, you will be docking at the Redwood Marine Terminal in Eureka, CA at the second high tide. The berth is located between NOAA reference tidal station #9418767 and subordinate station #9418801. What time (LST) will you be dockingNot learned 1408. On 5 October 2023, you will be docking at the Redwood Marine Terminal in Eureka, CA at the second low tide. The berth is located between NOAA reference tidal station #9418767 and subordinate station #9418801. What time (LST) will you be dockingNot learned 1409. On 9 November 2023 at 1630, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). What is the direction and velocity of the current you are encountering as you pass Buoy “10”Not learned 1410. What is NOT a purpose of Automatic Identification Systems (AIS)?Not learned 1411. You are on a vessel using AIS code 57 for towing ahead. Your vessel’s length overall is 200ft (61m) and the breadth is 54ft (16.5m). The barge is 210ft (64m) with a breadth of 59ft (18m). The GPS antenna is on the centerline centered fore and aft. What GPS antenna position dimension (ABCD) should you enter directly into your AIS?Not learned 1412. What does the agonic line on an isomagnetic chart indicate?Not learned 1413. Which symbol represents a 10-fathom curve?Not learned 1414. In the illustration, on an ECDIS S-57 compliant ENC, which symbol represents a Zone of Confidence (ZOC) A2Not learned 1415. What will a buoy marking a wreck show?Not learned 1416. When using GPS, how many theoretical position lines are required for a three-dimensional fix?Not learned 1417. With regard to GPS, how can a civilian receiver may be capable of achieving the same accuracy as a military receiver?Not learned 1418. Which is TRUE of a shipborne Class A Automatic Identification System (AIS)?Not learned 1419. On 5 October 2023, you will be docking at the Redwood Marine Terminal in Eureka, CA at the first high tide. The berth is located between NOAA reference tidal station #9418767 and subordinate station #9418801. What time (LST) will you be dockingNot learned 1420. Geographic range is the maximum distance at which a light may be seen under which conditions?Not learned 1421. The luminous range of a light takes into account which factor?Not learned 1422. The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen __________.Not learned