Q152 - Navigation General: Oceans or Near Coastal, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. On 15 October 2023, you will be docking on the Southern Branch Elizabeth River, VA at the second low tide. The berth is located between NOAA reference tidal station #8638660 and reference station #8639348. What time (LST) will you be dockingNot learned 2. A magnetic compass card is marked in how many degrees?Not learned 3. The heading of a vessel is indicated by what part of the compass?Not learned 4. What does the lubber's line on a magnetic compass indicate?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. 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 11. 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 12. 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 13. 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 14. 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 15. 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 16. How can the accuracy of an azimuth circle be checked?Not learned 17. For an accurate barometer check, you would __________.Not learned 18. What will act to dissipate fog?Not learned 19. Which action is the safest and most prudent procedure to follow while navigating in the vicinity of a tropical cyclone?Not learned 20. 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 21. When adjusting a magnetic compass for error, a deviation table should be made __________.Not learned 22. When adjusting a magnetic compass for error, which is TRUE concerning the deviation table?Not learned 23. What is an advantage of the magnetic compass aboard vessels?Not learned 24. What is NOT an advantage of the rhumb line track over a great circle track?Not learned 25. Advection fog is most commonly caused by __________.Not learned 26. Which agency maintains federal aids to navigation?Not learned 27. Which agency publishes the Light Lists?Not learned 28. What agency of the U.S. Government issues charts of U.S. waters and Coast Pilots?Not learned 29. The agonic line on an isomagnetic chart indicates the __________.Not learned 30. Which aid is NOT marked on a chart with a magenta circle?Not learned 31. Air circulation is caused or affected by __________.Not learned 32. An air mass that has moved down from Canada would most likely have which symbols?Not learned 33. Air masses near the earth's surface __________.Not learned 34. When is an air mass termed "warm"?Not learned 35. Air temperature varies with __________.Not learned 36. How are altocumulus clouds defined?Not learned 37. You are at anchor in the anchorage at the entrance to Delaware Bay. You weigh anchor at 1445 DST (ZD +4) on 24 July 1983 and proceed northbound enroute to Philadelphia at a speed of 10 knots. Which of the following should you expect to experience?Not learned 38. You are anchored in the Aleutian Island chain and receive word that a tsunami is expected to strike the islands in six hours. What is the safest action?Not learned 39. What is TRUE concerning an anemometer on a moving vessel?Not learned 40. An aneroid barometer on a boat should always be __________.Not learned 41. An aneroid barometer is an instrument __________.Not learned 42. Aneroid barometers are usually calibrated to indicate atmospheric pressure in which units?Not learned 43. At what angle to the isobars do surface winds blow over the open sea?Not learned 44. Where can the annual change in variation for an area be found?Not learned 45. How is the annual rate of change for magnetic variation shown on a pilot chart?Not learned 46. 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 47. Which is a characteristic of anticyclones?Not learned 48. The apparent wind's speed can be zero, but only when two conditions are present. One condition is that the true __________.Not learned 49. The apparent wind is zero when the true wind is __________.Not learned 50. 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 51. What should you apply to a fathometer reading to determine the depth of water?Not learned 52. As it approaches, what will a typical warm front bring?Not learned 53. 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 54. You are approaching a light fitted with a RACON. The light may be identified on the radar by __________.Not learned 55. When approaching a preferred-channel buoy, the best channel is NOT indicated by the __________.Not learned 56. You are approaching a sea buoy which emits a racon signal. This signal is most frequently triggered by which type of radar?Not learned 57. 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 58. 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 59. 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 60. 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 61. 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 62. 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 63. 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 64. 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 65. What is the approximate wave length of an X Band Radar operating on a frequency of approximately 9.5 GHz?Not learned 66. What area of the earth cannot be shown on a standard Mercator chart?Not learned 67. Which is an area of strong westerly winds occurring between 40°S and 60°S latitude?Not learned 68. 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 69. Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel?Not learned 70. Your ARPA has two guard zones. What is the purpose of the inner guard zone?Not learned 71. 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 72. Which are associated with Cumulonimbus clouds?Not learned 73. Which term describes the atmosphere in the vicinity of a high pressure area?Not learned 74. Atmospheric pressure may be measured with a(n) __________.Not learned 75. Atmospheric pressure at sea level is equal to __________.Not learned 76. 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 77. Automatic identification systems (AIS) are expected to broadcast all of the following information EXCEPT __________.Not learned 78. Automatic identification systems (AIS) are required to do which of the following?Not learned 79. On which of the following does an automatic identification system (AIS) transponder transmit and receive information?Not learned 80. Which two channels does an automatic identification system (AIS) transponder use to transmit and receive information broadcasts?Not learned 81. 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 82. What is the average speed of the movement of a hurricane following the recurvature of its track?Not learned 83. What is the average speed of movement of a hurricane prior to recurvature?Not learned 84. To avoid error, how should you read the scale of an aneroid barometer?Not learned 85. Barometers are calibrated at which standard temperature?Not learned 86. What does a barometer measure?Not learned 87. When your barometer reading changes from 30.25 to 30.05 in a 12-hour period it indicates __________.Not learned 88. Barometer readings in weather reports are given in terms of pressure at which reference location?Not learned 89. A barometer showing falling pressure indicates the approach of a __________.Not learned 90. What is a barometric pressure reading of 29.92 inches of mercury is equivalent to?Not learned 91. The bases of middle clouds are located at altitudes of between __________.Not learned 92. What is the basic principle of the magnetic compass?Not learned 93. 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 94. Which Beaufort force indicates a wind speed of 65 knots?Not learned 95. The Beaufort scale is used to estimate which element of the weather?Not learned 96. 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 97. What benefit is a weather bulletin to a mariner?Not learned 98. Which best defines current?Not learned 99. Which defines the height of tide?Not learned 100. The best estimate of the wind direction at sea level can be obtained from observing the direction of the __________.Not learned 101. The Brazil Current flows in which general direction?Not learned 102. Brief, violent showers frequently accompanied by thunder and lightning are usually associated with __________.Not learned 103. What does a buoy with a composite group-flashing light indicate?Not learned 104. Which buoy will NOT display white retroreflective material?Not learned 105. Which of the buoys listed below could be used to mark an anchorage?Not learned 106. When a buoy marks a channel bifurcation, the preferred channel is NOT indicated by __________.Not learned 107. Buoys which mark dredging areas are painted which color?Not learned 108. How are buoys which mark isolated dangers painted?Not learned 109. Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic?Not learned 110. A buoy marking a wreck will show a(n) __________.Not learned 111. Which buoy may be even numbered?Not learned 112. Which buoy may be odd numbered?Not learned 113. Which buoy may be odd numbered?Not learned 114. Which buoy is NOT numbered?Not learned 115. 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 116. A buoy having red and green horizontal bands would have which light characteristic?Not learned 117. The buoy symbol printed on your chart is leaning to the northeast. What does this indicate?Not learned 118. Which of the buoy symbols shown in illustration D032NG below indicates a safe water mark?Not learned 119. 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 120. A cardinal mark showing an uninterrupted quick-flashing white light indicates the deepest water is located in which quadrant?Not learned 121. Which cardinal quadrant is represented by the topmark in illustration D024NG below?Not learned 122. In most cases, the direction of the apparent wind lies between the bow and which reference point?Not learned 123. If you are caught in the left semicircle of a tropical storm, in the Southern Hemisphere, which action should you take?Not learned 124. What will cause the ARPA to emit a visual alarm, audible alarm, or both?Not learned 125. What causes compass deviation?Not learned 126. Which causes the Earth's irregular heating?Not learned 127. What causes permanent magnetism on a vessel?Not learned 128. Which is the cause of tropic tides?Not learned 129. What causes variation in a compass?Not learned 130. Which causes the wind flow from the horse latitudes to the doldrums to be deflected?Not learned 131. 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 132. When changing from a compass course to a true course, which should you apply?Not learned 133. 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 134. What is a characteristic of cardinal marks?Not learned 135. Which characteristic and color will a preferred-channel buoy show?Not learned 136. Which characteristics will a lighted buoy that is to be left to starboard, when entering a U.S. port from seaward have?Not learned 137. What is a characteristic of a rhumb line?Not learned 138. Which is a characteristic of the weather preceding an approaching warm front?Not learned 139. The chart of a beach area shows a very steep slope to the underwater beach bottom. Which type of breakers can be expected when trying to land a boat on this beach?Not learned 140. Charts should be corrected by using information published in which text?Not learned 141. Chart correction information is NOT disseminated through the __________.Not learned 142. 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 143. 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 144. Your chart indicates that there is an isolated rock and names the rock using vertical letters. This indicates the __________.Not learned 145. 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 146. 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 147. 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 148. How are chart legends which indicate a conspicuous landmark printed?Not learned 149. What do chart legends printed in capital letters indicate about the associated landmark?Not learned 150. Chart legends printed in capital letters show that the associated landmark is __________.Not learned 151. How is a chart with a natural scale of 1:160,000 classified?Not learned 152. A chart position enclosed by a semi-circle is a(n) __________.Not learned 153. A chart position enclosed by a square is a(n) __________.Not learned 154. Which chart has a scale of 1:45,000Not learned 155. A chart with a scale of 1:80,000 would fall into which category?Not learned 156. Charts showing the coast of Mexico are produced by the United States __________.Not learned 157. On charts of U.S. waters, a magenta marking is NOT used for marking a __________.Not learned 158. Which defines the term charted depth?Not learned 159. What are Cirrus clouds primarily composed of?Not learned 160. 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 161. 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 162. 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 163. Which class of tide prevails in the greatest number of important harbors on the Atlantic Coast?Not learned 164. What classification of tropical cyclone would have closed isobars, counter clockwise rotary circulation, and sustained winds between 34 and 63 knots?Not learned 165. What do clear skies, with the exception of a few cumulus clouds indicate?Not learned 166. 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 167. The climate of the eastern coast of the Gulf of Mexico __________.Not learned 168. The climate of the northern coast of the Gulf of Mexico is _________.Not learned 169. Clouds are classified according to their __________.Not learned 170. Which cloud commonly produces a halo about the Sun or Moon?Not learned 171. 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 172. Which cloud is described as a low, dark, sheet-like cloud which is associated with continuous precipitation for many hours?Not learned 173. 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 174. How are clouds formed?Not learned 175. When would cloud formations be minimal?Not learned 176. What is the name of a cloud of marked vertical development (often anvil-shaped) and produces showers?Not learned 177. Clouds with the prefix "nimbo" in their name __________.Not learned 178. A cloud sequence of cirrus, cirrostratus, and altostratus clouds followed by rain usually signifies the approach of which front?Not learned 179. Which clouds is a thin, whitish, high cloud popularly known as "mares' tails"?Not learned 180. Which cloud type is normally associated with thunderstorms?Not learned 181. The Coast Guard broadcasts urgent marine storm warning messages on which of the following frequencies?Not learned 182. 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 183. Coast Pilots and navigational charts are kept corrected and up-to-date by using the __________.Not learned 184. A coastal chart could have a scale of __________.Not learned 185. When cold air displaces warm air you have a(n) __________.Not learned 186. 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 187. A cold front moving in from the northwest can produce __________.Not learned 188. As a cold front passes how do the pressure and the winds change?Not learned 189. What color lights do lighted information markers display?Not learned 190. What are the colors of a mid-channel daymark?Not learned 191. What is the color scheme of navigational marks used for informational or regulatory purposes?Not learned 192. What is a common unit of measure for atmospheric pressure?Not learned 193. Which is most commonly associated with fog?Not learned 194. Which is the most commonly encountered fog at sea?Not learned 195. When compared to air temperature, which factor is most useful in predicting fog?Not learned 196. Compared to a low pressure system, generally the air in a high is __________.Not learned 197. What is the compass course of a vessel heading NNE?Not learned 198. What is the compass course of a vessel heading ESE?Not learned 199. What is the compass course of a vessel heading NNW?Not learned 200. What is the compass course of a vessel heading NW?Not learned 201. What is the compass course of a vessel heading WNW?Not learned 202. What is the compass course of a vessel heading SW?Not learned 203. The compass deviation changes as the vessel changes __________.Not learned 204. Compass error is equal to the __________.Not learned 205. The compass error of a magnetic compass that has no deviation is __________.Not learned 206. Which is TRUE if the compass heading and the magnetic heading are the same?Not learned 207. The compass rose on a nautical chart indicates both variation and __________.Not learned 208. Which of the following compensates for errors introduced when a vessel heels over?Not learned 209. Which compensates for induced magnetism in the horizontal soft iron of a vessel?Not learned 210. Complete information on weather broadcasts throughout the world is contained in __________.Not learned 211. Which condition exists in the eye of a hurricane?Not learned 212. Which condition indicates that you are in a hurricane's dangerous semicircle in the Northern hemisphere?Not learned 213. Which condition(s) is(are) necessary for the formation of dew?Not learned 214. Which condition will occur after a cold front passes?Not learned 215. Which condition suggests that your present position lies in the navigable semicircle of a tropical storm?Not learned 216. Which conditions should a vessel entering the eye of a hurricane expect?Not learned 217. Which condition would NOT indicate the approach of a tropical storm?Not learned 218. Which condition would most likely result in fog?Not learned 219. Which conic projection chart features straight lines which closely approximate a great circle?Not learned 220. Considering the general circulation of the atmosphere, the wind system between latitudes 30° N and 60° N is commonly called the __________.Not learned 221. Which winds are consistent winds and blow from the horse latitudes to the doldrums?Not learned 222. What does not contribute to the commercial GPS receiver position error?Not learned 223. By convention, what color is the south pole of a magnet painted?Not learned 224. By convention, the Earth's south magnetic pole is which color?Not learned 225. 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 226. Which correction(s) must be applied to an aneroid barometer?Not learned 227. The correction(s) which must be applied to an aneroid barometer reading include(s) __________.Not learned 228. Which corrector will compensate for the deviation which is maximum on intercardinal compass headings?Not learned 229. If you count 20 seconds between seeing lightning and hearing the thunder, how far is the storm away from you?Not learned 230. 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 231. You are on course 030°T. The relative bearing of a lighthouse is 45°. What is the true bearing?Not learned 232. You are on course 042°T. To check the course of your vessel you should observe a celestial body on which bearing?Not learned 233. 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 234. You are on course 079°T, speed 11.2 knots. At 0904 you see a daymark bearing 078°T at a range of 4.6. If you change course at 0910 to leave the daymark abeam to starboard at 0.5 mile, at what time will the daymark be abeam?Not learned 235. You are on course 138°T. To check the latitude of your vessel you should observe a celestial body on which bearing?Not learned 236. While on a course of 138°T, a light bears 14° on the starboard bow at a distance of 8.6 miles. What course should you steer to pass 3 miles abeam of the light leaving it to starboard?Not learned 237. You are on course 312°T. To check the speed of your vessel you should observe a celestial body on which bearing?Not learned 238. 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 239. 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 240. 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 241. You are on course 238°T. To check the course of your vessel you should observe a celestial body on which bearing?Not learned 242. You are on course 251°pgc and 241° per magnetic compass, when you observe a range in line bearing 192°pgc. The chart indicates that the range is in line on a bearing of 194°T. The variation is 16°E. What is the deviation of the magnetic compass?Not learned 243. 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 244. You are on course 303°T. To check the speed of your vessel you should observe a celestial body on which bearing?Not learned 245. 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 246. 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 247. 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 248. 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 249. When crossing a front how do isobars tend to change?Not learned 250. Which of the following should be done when crossing the magnetic equator?Not learned 251. Cumulonimbus clouds are formed by __________.Not learned 252. Cumulonimbus clouds are most likely to accompany a(n) __________.Not learned 253. What do cumulus clouds that have undergone vertical development and have become cumulonimbus in form indicate?Not learned 254. When does a current perpendicular to a vessel's track have the greatest effect on the vessel's course made good?Not learned 255. Current refers to the __________.Not learned 256. If the current and wind are in the same direction, what does the sea surface represent concern the true wind speed?Not learned 257. If the current and wind are in the same direction, the sea surface represents a wind speed __________.Not learned 258. If the current and wind are in opposite directions, the sea surface represents __________.Not learned 259. A cyclone in its final stage of development is called a(n) __________.Not learned 260. In a cyclone, where is the lowest pressure found?Not learned 261. Cyclones tend to move __________.Not learned 262. Which is the only cylindrical chart projection widely used for navigation?Not learned 263. The Daily Memorandum contains which information?Not learned 264. The daily recurring pattern of pressure changes most noticeable in low latitudes is the __________.Not learned 265. The dangerous semicircle of a hurricane in the Northern Hemisphere is that area of the storm __________.Not learned 266. Where is the dangerous semicircle located on a hurricane in the Southern Hemisphere?Not learned 267. The dangerous semicircle of a typhoon in the Southern Hemisphere is that area __________.Not learned 268. Which data must ECDIS be able to record at one-minute intervals?Not learned 269. Which data must ECDIS be able to record at one-minute intervals?Not learned 270. Where can information about the direction and velocity of rotary tidal currents be found?Not learned 271. Which term is used to describe the database information that should be shown when a chart is first displayed on ECDIS?Not learned 272. 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 273. The datum from which the predicted heights of tides are reckoned in the tide tables is __________.Not learned 274. 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 275. Which datum is used for soundings on charts of the East Coast of the United States?Not learned 276. When daylight savings time is kept, the times of tide and current calculations must be adjusted. How can this be accomplished?Not learned 277. What daymark has NO lateral significance?Not learned 278. Which daymark has no lateral significance?Not learned 279. What daymark shape is used in the lateral system?Not learned 280. A daymark used to indicate the safe water in a channel will have which of the shapes shown in illustration D045NG below?Not learned 281. 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 282. A daymark used as a special mark is indicated by which letter in illustration D045NG below?Not learned 283. Daymarks marking the starboard side of the channel when going towards the sea are __________.Not learned 284. Which is TRUE of a dead reckoning (DR) plot?Not learned 285. A dead reckoning (DR) plot __________.Not learned 286. When should your dead reckoning position be plotted?Not learned 287. When the declination of the Moon is 0°12.5'S, you can expect some tidal currents in Gulf Coast ports to __________.Not learned 288. A decrease in barometric pressure is associated with all of the following except __________.Not learned 289. Which defines an isotherm?Not learned 290. Which defines a light's luminous range?Not learned 291. The range of tide is the __________.Not learned 292. Which defines the term relative humidity?Not learned 293. Which defines a wave's fetch?Not learned 294. What is the definition of height of tide?Not learned 295. The dense black cumulonimbus clouds surrounding the eye of a hurricane are called __________.Not learned 296. The depth of water on a chart is indicated as 23 meters. What does that depth convert to?Not learned 297. The depth of the water is indicated on a chart as 32 meters. What is this equal to?Not learned 298. What describes an accurate position that is NOT based on any prior position?Not learned 299. The vertical distance from the tidal datum to the level of the water is the __________.Not learned 300. Which describes a diurnal tide?Not learned 301. What describes an ebb current?Not learned 302. What describes a flood current?Not learned 303. 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 304. Which describes a line of position derived by radar range from an identified point on a coast?Not learned 305. Which is TRUE concerning privately maintained aids to navigation included in the Light List?Not learned 306. Which describes the result when you turn on the fast time constant (differentiator) control of a radar?Not learned 307. Which describes the visible range marked on charts for lights?Not learned 308. Which describes the wind circulation around a high-pressure center in the Northern Hemisphere?Not learned 309. What is the direction of rotation of tropical cyclones, tropical storms and hurricanes in the Northern Hemisphere?Not learned 310. What does the description "Racon" beside an illustration on a chart mean?Not learned 311. It is desirable that a vessel encountering hurricane or typhoon conditions sends weather reports to the closest meteorological service at which time interval?Not learned 312. You desire to make good a true course of 203°. The variation is 19°E, magnetic compass deviation is 2°W, and gyrocompass error is 1°E. A westerly wind produces a 3° leeway. What is the course to steer per standard magnetic compass to make the true course good?Not learned 313. Despite weather predictions for continued good weather, a prudent mariner should be alert for all of the following, EXCEPT a sudden __________.Not learned 314. You can determine if your vessel's position is in the dangerous or navigable semicircle of a hurricane by __________.Not learned 315. 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 316. 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 317. When determining compass error by an azimuth of Polaris, you enter the Nautical Almanac with the __________.Not learned 318. Deviation is the angle between the __________.Not learned 319. Deviation is caused by __________.Not learned 320. Deviation in a compass is caused by which of the following?Not learned 321. Deviation which is maximum on intercardinal compass headings may be removed by the __________.Not learned 322. The dew point is reached when which condition occurs?Not learned 323. Which is TRUE concerning the dew point temperature?Not learned 324. The difference in degrees between true north and magnetic north is called __________.Not learned 325. Which is the difference between the DR position and a fix, both of which have the same time?Not learned 326. The difference between the heights of low and high tide is the __________.Not learned 327. The direction of prevailing winds in the Northern hemisphere is caused by the __________.Not learned 328. The direction of the southeast trade winds is a result of the __________.Not learned 329. The direction of the surface wind is __________.Not learned 330. The direction a vessel is pointed at any given time is the __________.Not learned 331. The direction in which a vessel is steered is the course. The path actually followed is the __________.Not learned 332. The direction in which a vessel should be steered between two points is known by which term?Not learned 333. Which is TRUE for the directive force acting on a gyrocompass?Not learned 334. 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 335. Distance along a track line is measured on a Mercator chart by using which method?Not learned 336. What is the distance from the bottom of a wave trough to the top of a wave crest?Not learned 337. Which term defines the distance in miles between the circle of equal altitude for the observed altitude (Ho) and the circle of equal altitude for the computed altitude (Hc)?Not learned 338. The diurnal inequality of the tides is caused by __________.Not learned 339. The diurnal pressure variation is most noticeable in the __________.Not learned 340. The diurnal variation of pressure is most noticeable __________.Not learned 341. The diurnal variation of pressure is not visible in the middle latitudes in winter because __________.Not learned 342. In the doldrums you will NOT have __________.Not learned 343. How are the doldrums characterized?Not learned 344. In the doldrums you can expect __________.Not learned 345. What does a Doppler log in the bottom return mode indicate?Not learned 346. A Doppler log in the volume reverberation mode indicates __________.Not learned 347. A Doppler speed log indicates speed over ground __________.Not learned 348. A Doppler speed log indicates speed through the water __________.Not learned 349. When drawing a weather map and an isobar crosses a front, the isobar is drawn __________.Not learned 350. What does the drift and set of tidal, river, and ocean currents refer to?Not learned 351. The dry bulb temperature is 78°F and the wet bulb temperature is 62°F. What is the relative humidity?Not learned 352. 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 353. Early indications of the approach of a hurricane may be all of the following EXCEPT __________.Not learned 354. 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 355. What is an ebb current?Not learned 356. ECDIS must be able to perform all of the following EXCEPT __________.Not learned 357. 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 358. ECDIS must give an alarm for which of the following cases?Not learned 359. ECDIS must give an alarm for which of the following cases?Not learned 360. ECDIS must give an alarm for which of the following cases?Not learned 361. An ECDIS is required to display which information?Not learned 362. An ECDIS is required to display which information?Not learned 363. An ECDIS is required to display which information?Not learned 364. ECDIS units incorporate Digital Chart Data Formats, which include __________.Not learned 365. All echo-sounders can measure the __________.Not learned 366. 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 367. When does the effects of priming of the tides occur?Not learned 368. Eight points of a compass are equal to how many degrees?Not learned 369. 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 370. An electronic depth finder operates on which principle?Not learned 371. Electronic Plotting Aid (EPA) has which built in functions?Not learned 372. Electronic Plotting Aid (EPA) has which built in functions?Not learned 373. An Electronic Plotting Aid (EPA) will drop off a target's vector if more than __________ minutes elapse between each manual plot.Not learned 374. What enables you to estimate the bearing of a storm's center?Not learned 375. 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 376. 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 377. 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 378. 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 379. 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 380. 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 381. 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 382. 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 383. 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 384. 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 385. 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 386. 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 387. You are enroute to Jacksonville, FL, from San Juan, P.R. There is a fresh N'ly wind blowing. As you cross the axis of the Gulf Stream you would expect to encounter __________.Not learned 388. 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 389. 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 390. As you enter a U.S. channel from seaward, which is TRUE concerning the numbers on the buoys?Not learned 391. When entering a channel from seaward, the numbers on buoys __________.Not learned 392. While entering a harbor on a course of 225° per gyrocompass, you take a bearing on a pair of range lights and get 220° per gyrocompass. The bearing on the chart is 217°T. The variation for the area is 6°W, and deviation is 2°W. What course would you steer per gyrocompass to make good a true course of 232°?Not learned 393. 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 394. 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 395. 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 396. When entering from seaward, what does a buoy displaying a composite group (2+1) flashing red light indicate?Not learned 397. When entering from seaward, what does a buoy displaying a single-flashing red light indicate?Not learned 398. On entering from seaward, which is TRUE of a starboard side daymark?Not learned 399. Entering from seaward, what do triangular-shaped daymarks mark?Not learned 400. 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 401. Which error is NOT included in the term "current" when used in relation to a fix?Not learned 402. How can you estimate the position of a tropical storm's center?Not learned 403. What should you expect when you encounter a tsunami in the open ocean?Not learned 404. You can expect frontal activity when two air masses collide and __________.Not learned 405. What does the expression "the air is saturated" mean?Not learned 406. The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the __________.Not learned 407. 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 408. Which factor has the greatest effect on the amount of gain required to obtain a fathometer reading?Not learned 409. Which factor(s) is/are used to develop the charted information of a lighthouse?Not learned 410. What feature(s) of a daymark is (are) used to identify the beacon upon which it is mounted?Not learned 411. Which feature, when set to zero, might allow a GPS unit to have an accuracy equivalent to Precise Positioning Service receiver capability?Not learned 412. Which is a feature of a special daymark?Not learned 413. You will find daily information about the duration of slack water in a port on the Atlantic Coast in which publication?Not learned 414. To find a magnetic compass course from a true course what must you apply?Not learned 415. To find the specific phase characteristic of a lighthouse on a sound of the United States you would use which reference?Not learned 416. Which can you use to indicate the bearing of the center of a hurricane or tropical storm?Not learned 417. The first indications a mariner will have of the approach of a warm front will be __________.Not learned 418. What is the FIRST sign of the existence of a well-developed tropical cyclone?Not learned 419. What is the first visible indication of the presence of a tropical cyclone or hurricane?Not learned 420. What does the Flinders bar on a magnetic compass compensate for?Not learned 421. The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval?Not learned 422. The flow of air around an anticyclone in the Southern Hemisphere is __________.Not learned 423. Fog is most commonly associated with a(n) __________.Not learned 424. Fog forms when which condition exists?Not learned 425. Fog forms when the air temperature is at or below __________.Not learned 426. Fog is formed when __________.Not learned 427. Fog generally clears when the __________.Not learned 428. Fog is likely to occur when there is little difference between the dew point and the __________.Not learned 429. Which fog is produced by warm moist air passing over a cold surface?Not learned 430. How can you follow the approach of a dangerous cyclonic storm?Not learned 431. Which of the following is the most accurate method of determining gyrocompass error while underway?Not learned 432. Which of the following is associated with consistently high barometric pressure?Not learned 433. Which item is NOT associated with cumulonimbus clouds?Not learned 434. Which of the following is a boundary between two air masses?Not learned 435. Which of the following causes the development of an occluded front?Not learned 436. Which of the following causes a frontal thunderstorm?Not learned 437. Which of the following are data layer categories to be displayed on ECDIS?Not learned 438. Which of the following data layer categories is NOT displayed on ECDIS?Not learned 439. Which of the following describes gyrocompass repeaters which reproduce the indications of the master gyrocompass?Not learned 440. Which of the following describes the principal purpose of magnetic compass adjustment?Not learned 441. Which of the following is NOT a form of precipitation?Not learned 442. All of the following can be found on a Pilot Chart EXCEPT information concerning which item?Not learned 443. Which of the following must an ECDIS system be able to perform?Not learned 444. Which of the following must the electronic chart of an ECDIS display, as required by IMO/IHO?Not learned 445. Which of the following represents the slope of a warm front?Not learned 446. Which of the following is a standard correction applied to the reading of an aneroid barometer?Not learned 447. Which of the following statements concerning frontal movements is TRUE?Not learned 448. Which of the following statements is FALSE?Not learned 449. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 450. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 451. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 452. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 453. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 454. Which of the following typically happens to the barometric pressure after a cold front passes?Not learned 455. Which of the following is the most useful factor for predicting weather?Not learned 456. 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 457. Which form of cloud, that is often known as "mackerel sky", is generally associated with fair weather?Not learned 458. Which form of navigation may be suspended without notice under defense planning?Not learned 459. Freezing salt water spray should be anticipated when the air temperature drops below what temperature?Not learned 460. A gale is characterized by a wind speed of __________.Not learned 461. A general chart could have a scale of __________.Not learned 462. A general chart intended for coastwise navigation outside of outlying reefs can have which scale?Not learned 463. General information on enroute weather and climate is found in __________.Not learned 464. General information about the location, characteristics, facilities, and services for U.S. and foreign ports may be obtained from which publication?Not learned 465. In general, on how many radio channels will an automatic identification system (AIS) operate?Not learned 466. Which general weather conditions should you expect to find in a low-pressure system?Not learned 467. A generally circular low pressure area is called a(n) __________.Not learned 468. What generally occurs when the land is cooler than the nearby water?Not learned 469. Generally speaking, you should expect to find low atmospheric pressure prevailing in the earth's __________.Not learned 470. Generally speaking, in the Northern Hemisphere, when winds are blowing from between SE and SW the barometric reading __________.Not learned 471. On a gnomonic chart, a great circle track between Los Angeles and Brisbane will appear as a __________.Not learned 472. Good weather is usually associated with a region of __________.Not learned 473. Which government agency publishes the U.S. Coast Pilot?Not learned 474. Most GPS receivers use the Doppler shift of the carrier phase to compute __________.Not learned 475. The greater the pressure difference between a high and a low-pressure center, the __________.Not learned 476. When is the greatest directive horizontal force exerted on the magnetic compass of a vessel?Not learned 477. Red lights may appear on which buoys?Not learned 478. 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 479. What is the gyrocompass error resulting from your vessel's movement in OTHER than an east-west direction?Not learned 480. 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 481. Which handheld instrument is used to measure distances between objects and the ship?Not learned 482. What happens to the barometric pressure after a cold front passes?Not learned 483. What happens to the intensity of a hurricane as it reaches higher latitudes and cooler waters?Not learned 484. A harbor chart could have a scale of __________.Not learned 485. How often is The Local Notice to Mariners updated?Not learned 486. You are heading in a northerly direction when you come across an easterly current. Your vessel will respond in which manner?Not learned 487. 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 488. Heeling error is defined as the change of deviation for a heel of __________.Not learned 489. The height of a light is measured from which reference plane?Not learned 490. The height of a wave is the vertical distance from which reference points?Not learned 491. In very high latitudes, the most practical chart projection is the __________.Not learned 492. Most high pressure areas in the United States are accompanied by __________.Not learned 493. As a high pressure system approaches, the barometer reading __________.Not learned 494. Which is TRUE when a high pressure system is centered north of your vessel in the Northern Hemisphere?Not learned 495. The highest frequency of tropical cyclones in the North Atlantic Ocean occurs during which time frame?Not learned 496. Which system provides the highest level of commercial navigational accuracy?Not learned 497. 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 498. The horse latitudes are characterized by __________.Not learned 499. The "horse latitudes" are regions of __________.Not learned 500. Hot air can hold __________.Not learned 501. A hurricane is characterized by winds of which speed?Not learned 502. 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 503. A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT __________.Not learned 504. When a hurricane passes over colder water or land and loses its tropical characteristics, the storm becomes a(n) __________.Not learned 505. The hurricane season in the North Atlantic Ocean reaches its peak during which month?Not learned 506. If a hurricane several hundred miles away is moving in your general direction your barometer would __________.Not learned 507. A HYDROLANT warning would normally be sent for all of the following EXCEPT __________.Not learned 508. A hygrometer is a device used for determining __________.Not learned 509. Under the IALA-B Buoyage System, which is TRUE of a buoy displaying a red light?Not learned 510. Under the IALA-B Buoyage System, which is TRUE of a conical buoy?Not learned 511. In the IALA Buoyage System, preferred-channel-to-port or preferred-channel-to-starboard buoys, which is TRUE when fitted with lights?Not learned 512. Under the U.S. Aids to Navigation System, what does a lighted buoy with a spherical topmark mark indicate?Not learned 513. Under the IALA Buoyage System, which topmark shown in illustration D023NG below will be displayed on a safe watermark?Not learned 514. In illustration D009NG below, your position X is at LAT 35° S. Which winds are you experiencing?Not learned 515. Illustration D011NG below represents the geographic location of a vessel and the radar presentation at the same time. Which statement is TRUE?Not learned 516. Illustration D011NG below represents the geographic location of a vessel and the radar presentation at the same time. Which statement is TRUE?Not learned 517. In illustration D039NG below, which number indicates cirrus clouds?Not learned 518. In illustration D039NG below, what type of cloud is indicated by the number five?Not learned 519. In illustration D039NG below, what type of cloud is indicated by the number four?Not learned 520. In illustration D039NG below, what type of cloud is indicated by the number one?Not learned 521. In illustration D044NG below, a pillar buoy is indicated by which letter?Not learned 522. In illustration D044NG below, what type of buoy is indicated by the letter A?Not learned 523. In illustration D045NG below, a green-and-red banded daymark, with the uppermost band green, will have which of the following shapes?Not learned 524. In illustration D045NG below, which shape is a daymark warning of danger?Not learned 525. In illustration D045NG below, what two shapes shown are used to indicate a preferred channel?Not learned 526. In illustration D051NG below what is indicated by the position labeled "C"?Not learned 527. In illustration D051NG below, why was the position labeled "C" plotted?Not learned 528. In illustration D051NG below, why was the position labeled "E" plotted?Not learned 529. In illustration D051NG below, why was the position labeled "D" plotted?Not learned 530. The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is __________.Not learned 531. Which is the most important information to be obtained from a barometer?Not learned 532. An important lunar cycle affecting the tidal cycle is called the nodal period. How long is this cycle?Not learned 533. What is the most important source of information to be used in correcting charts and keeping them up to date?Not learned 534. 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 535. 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 536. 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 537. 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 538. What is indicated when slanted letters are used to spell the name of a charted object?Not learned 539. What indicates the arrival of a hurricane within 24 to 36 hours?Not learned 540. What indicates a buoy that should be left to port when entering from seaward? (U.S. Aids to Navigation System)Not learned 541. What indicates that a tropical cyclone may be within 500 to 1,000 miles of your position?Not learned 542. Which indication on the barometer is most meaningful in forecasting weather?Not learned 543. By what means are indications of the master gyrocompass sent to remote repeaters?Not learned 544. 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 545. What will NOT induce errors into a Doppler sonar log?Not learned 546. Where is induced magnetism found?Not learned 547. Information about currents around Pacific Coast ports of the U.S. can be obtained in which publication?Not learned 548. What information is found in the chart title?Not learned 549. What information is NOT found in the chart title?Not learned 550. Which information is found in the chart title?Not learned 551. Which information must automatic identification systems (AIS) automatically provide to appropriately equipped shore stations, vessels and aircraft?Not learned 552. Which of the sources contains information on Northern Right Whales?Not learned 553. Which information does the outer ring of a compass rose on a nautical chart provide?Not learned 554. Information about the pilotage available at Miami harbor may best be obtained from which publication?Not learned 555. Which information is NOT provided in broadcasts by the National Institute of Standards and Technology?Not learned 556. Which text contains information on search and rescue procedures and special, local communications used in Mexican waters?Not learned 557. Which item contains information about temporary, short-term changes affecting the safety of navigation in U.S. waters?Not learned 558. Where can information for updating paper nautical charts primarily be found?Not learned 559. How are you informed of defects or changes in aids to navigation?Not learned 560. You have been informed that dredging operations may be underway in your vicinity. Which buoy indicates the dredging area?Not learned 561. The instrument most commonly used to gather the data for determining the relative humidity is the __________.Not learned 562. An instrument designed to maintain a continuous record of atmospheric pressure is a(n) __________.Not learned 563. An instrument that indicates wind direction is known as a(n) __________.Not learned 564. An instrument that maintains a continuous record of humidity changes is called a __________.Not learned 565. An instrument which maintains a continuous record of temperature changes is called a __________.Not learned 566. What is used to measure wind velocity?Not learned 567. Which instrument is used to measure the relative humidity of the air?Not learned 568. Which instrument is used to predict the approach of a low pressure system?Not learned 569. An instrument useful in predicting fog is the __________.Not learned 570. How is the intensity of a light expressed in the Light Lists?Not learned 571. 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 572. Isobars on a weather map are useful in predicting which element of the weather?Not learned 573. Isogonic lines are lines on a chart indicating __________.Not learned 574. On an isomagnetic chart, the line of zero variation is the __________.Not learned 575. Which is TRUE of a katabatic wind?Not learned 576. Which kind of conditions would you observe as the eye of a storm passes over your vessel's position?Not learned 577. What kind of pressure systems travel in tropical waves?Not learned 578. What kind of weather would you expect to accompany the passage of a tropical wave?Not learned 579. 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 580. The largest waves (heaviest chop) will usually develop where the wind blows __________.Not learned 581. Which is TRUE of a lateral system buoy displaying a quick flashing light?Not learned 582. A latitude line will be obtained by observing a body __________.Not learned 583. The left half of the storm is called the navigable semicircle because __________.Not learned 584. What is the length of a nautical mile?Not learned 585. The length of a wave is the length __________.Not learned 586. Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?Not learned 587. 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 588. A very light breeze that causes ripples on a small area of still water is a known by which term?Not learned 589. Which light characteristic may be used on a special mark?Not learned 590. Which light characteristic may be used on a special purpose mark?Not learned 591. 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 592. 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 593. Which is TRUE concerning Light Lists for coastal waters?Not learned 594. The Light List Does NOT contain information on __________.Not learned 595. The Light List indicates that a dayboard is a type KGW. You should take which action?Not learned 596. The Light List indicates that a dayboard is a type MR. You should take which action?Not learned 597. The Light List indicates that a dayboard is a type NB. You should __________.Not learned 598. The Light List indicates that a dayboard is a type TR-SY. Which action should you take?Not learned 599. 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 600. 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 601. 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 602. 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 603. 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 604. 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 605. 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 606. 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 607. 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 608. What is the light phase characteristic of a lighted isolated-danger mark?Not learned 609. The light rhythm of MorseNot learned 610. 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 611. Which would you expect to see on a lighted preferred-channel buoy?Not learned 612. What is a lighted safe water mark fitted with to aid in its identification?Not learned 613. Lighted white and orange buoys must show which color light?Not learned 614. 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 615. What is the name given to lines on a chart which connect points of equal magnetic variation?Not learned 616. A line of clouds, sharp changes in wind direction, and squalls are most frequently associated with a(n) __________.Not learned 617. The line connecting the points of the earth's surface where there is no dip is the __________.Not learned 618. A line connecting all possible positions of your vessel at any given time is a __________.Not learned 619. Which line connects the points of zero magnetic dip?Not learned 620. The line which connects the points of zero magnetic dip is __________.Not learned 621. Lines drawn through points on the Earth having the same atmospheric pressure are known by which term?Not learned 622. A line of position is __________.Not learned 623. A line of position from a celestial observation is a segment of which choice?Not learned 624. A line of position formed by sighting two charted objects in line is called a(n) __________.Not learned 625. Lines of position may be __________.Not learned 626. Which term is given to a line on a weather chart connecting places which have the same barometric pressure?Not learned 627. Which list of clouds is in sequence, from highest to lowest in the sky?Not learned 628. 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 629. Which of the listed properties does warm air possess?Not learned 630. Little or no change in the barometric reading over a twelve hour period indicates __________.Not learned 631. You will be loading in Boston Harbor to a maximum draft of 32'06". The charted depth of an obstruction in the channel near Boston Light is 30 feet and you wish to have 3 feet of keel clearance. The steaming time from the pier to the obstruction is 01h 05m. What is the latest time (ZD +4) you can sail on 17 May 1983 and meet these requirements?Not learned 632. 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 633. You are located within a stationary high pressure area. Your aneroid barometer is falling very slowly. This indicates a(n) __________.Not learned 634. Which location is a source for an air mass labeled mTw?Not learned 635. You should log all barometer readings taken at sea __________.Not learned 636. A low HDOP (Horizontal Dilution of Precision) number such as 2 indicates a __________.Not learned 637. In low latitudes, the high(s) of the diurnal variation of pressure occur(s) at __________.Not learned 638. In low latitudes, the low(s) of the diurnal variation of pressure occur(s) at __________.Not learned 639. In low latitudes the range of the diurnal variation of pressure is up to __________.Not learned 640. When a low pressure area is approaching, the weather generally __________.Not learned 641. Low pressure disturbances, which travel along the intertropical convergence zone, are called __________.Not learned 642. Which is a low, uniform layer of cloud resembling fog, but not resting on the ground?Not learned 643. The lunar or tidal day is __________.Not learned 644. Magnets in the binnacles of magnetic compasses are used to reduce which effect?Not learned 645. What do the magnets placed in horizontal trays in the compass binnacle compensate for?Not learned 646. 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 647. If a magnetic compass is not affected by any magnetic field other than the Earth's, which statement is TRUE?Not learned 648. What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?Not learned 649. Which is TRUE concerning magnetic compass deviation?Not learned 650. 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 651. What is magnetic dip a measurement of?Not learned 652. At the magnetic equator there is no induced magnetism in the vertical soft iron because __________.Not learned 653. Magnetic information on a chart may be __________.Not learned 654. Magnetic variation changes with a change in __________.Not learned 655. Which term is given to magnetism which is present only when the material is under the influence of an external field?Not learned 656. A major advantage of the NAVTEX system when compared to other systems is that __________.Not learned 657. What is the major advantage of a rhumb line track?Not learned 658. What is the major limitation in using the Sight Reduction Tables for Air Navigation Volume I (Pub. No. 249) for star sights?Not learned 659. 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 660. When making landfall at night, how can you determine if a light is a major light or an offshore buoy?Not learned 661. 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 662. In many areas "atoll" clouds (clouds of vertical development) are produced over small islands. What causes the development of these clouds?Not learned 663. How many characters does the short text messaging feature of the automatic identification system (AIS) allow for?Not learned 664. How many fixed objects are needed to plot a running fix?Not learned 665. How many high waters usually occur each day on the East Coast of the United States?Not learned 666. How many points are there in a compass card?Not learned 667. How many slack tidal currents usually occur each day on the east coast of the United States?Not learned 668. How many targets can an Electronic Plotting Aid (EPA) track at the same time?Not learned 669. Mariners are FIRST warned of serious defects or important changes to aids to navigation by which means?Not learned 670. Which maritime radio system, consisting of a series of coast stations, transmits coastal warnings?Not learned 671. At the master gyrocompass, the compass card is attached to the __________.Not learned 672. Which term is used to express the maximum distance at which a light may be seen under existing visibility conditions?Not learned 673. How may a spherical buoy be identified?Not learned 674. Mean high water is the average height of __________.Not learned 675. What is the reference datum mean high water used to measure?Not learned 676. Which measurement uses mean high water as the reference plane?Not learned 677. Which is TRUE of mean high water?Not learned 678. Mean low water is the average height of __________.Not learned 679. Mean lower low water is the reference plane used for which measurements?Not learned 680. 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 681. Which term is given to the mechanical lifting of air by the upslope slant of the terrain?Not learned 682. On a Mercator chart, 1 nautical mile is equal to __________.Not learned 683. Which type of projection is used to make a Mercator chart?Not learned 684. As a Merchant Marine Officer you are expected to be able to do which of the following?Not learned 685. 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 686. 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 687. Which meteorological feature controls the climate of the Gulf of Mexico and the coastal area during late spring and summer?Not learned 688. In a microbarograph, when should the pen be checked and the inkwell filled?Not learned 689. A microbarograph is a precision instrument that provides a __________.Not learned 690. A mid-channel buoy, if lighted, will show a __________.Not learned 691. A mid-channel buoy, may show which light?Not learned 692. In mid-ocean, the characteristics of a wave are determined by three factors. What is NOT one of these factors?Not learned 693. On mid-ocean waters, the height of a wind-generated wave is not affected by the __________.Not learned 694. A millibar is a unit of __________.Not learned 695. In modern fathometers the sonic or ultrasonic sound waves are produced electrically by means of a(n) __________.Not learned 696. Which is TRUE of Monsoons?Not learned 697. When the Moon's declination is maximum north, which of the following will occur?Not learned 698. When the moon is at first quarter or third quarter phase, what type of tides will occur?Not learned 699. When the moon is new or full, which type of tides occur?Not learned 700. A mooring buoy, if lighted, shows which color light?Not learned 701. 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 702. The movement of water away from the shore or downstream is called a(n) __________.Not learned 703. What must change for the compass deviation to change?Not learned 704. Which name is given to the pressure-sensitive element of an aneroid barometer?Not learned 705. Which name is given to the prevailing winds in the band of latitude from approximately 5°N to 30°N?Not learned 706. What is the name of the region of high pressure extending around the Earth at about 35°N latitude?Not learned 707. The National Geospatial-Intelligence Agency (formerly the National Imagery and Mapping Agency) would produce a chart of the coast of which area?Not learned 708. The National Oceanic and Atmospheric Administration publishes which item?Not learned 709. What natural feature is responsible for the rather even climate found on the Florida peninsula throughout the year?Not learned 710. In the Nautical Almanac provided, when would Jupiter and Saturn be visible in temperate latitudes for both evening and morning stars?Not learned 711. On a nautical chart, what does the inner ring of a compass rose indicate?Not learned 712. Which nautical charts are intended for coastwise navigation outside of outlying reefs and shoals?Not learned 713. A nautical mile is a distance of approximately how much greater than or less than a statute mile?Not learned 714. Which of the Nautical Texts is/are published by the U.S. Coast Guard?Not learned 715. Naval Control of Shipping (NCS) publications should be __________.Not learned 716. Which Naval Control of Shipping publication should be aboard your vessel?Not learned 717. Which Naval Control of Shipping publication should be aboard your vessel?Not learned 718. A NAVAREA warning carries the following number: 1986/87 (11). Which statement is TRUE?Not learned 719. The navigable semicircle of a hurricane in the Northern Hemisphere is that area of the storm measured __________.Not learned 720. The navigable semicircle of a tropical storm in the South Indian Ocean is located on which side of the storm's track?Not learned 721. The navigable semicircle of a typhoon in the Southern Hemisphere is the area __________.Not learned 722. When navigating coastwise and hurricane warnings are received, you should __________.Not learned 723. 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 724. 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 725. When navigating in high latitudes and using a chart based on a Lambert conformal projection, which is TRUE?Not learned 726. You are navigating in pilotage waters using running fixes. The maximum time between fixes should be about __________.Not learned 727. When navigating using GPS, what is an indicator of the geometry of the satellites that your receiver is locked onto?Not learned 728. Which is TRUE when navigating a vessel?Not learned 729. Which navigational mark may only be lettered?Not learned 730. A navigator fixing a vessel's position by radar __________.Not learned 731. When should a navigator rely on the position of floating aids to navigation?Not learned 732. When do neap tides occur?Not learned 733. Neap tides occur when the __________.Not learned 734. When do neap tides occur?Not learned 735. The needle of an aneroid barometer points to 30.05 on the dial. What does this indicate?Not learned 736. 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 737. NOAA VHF weather reports are continuously broadcast on VHF channels WX-1, WX-2 and WX-3 on a frequency of __________.Not learned 738. Above-normal tides near the center of a hurricane may be caused by the __________.Not learned 739. In North America, which direction do the majority of the weather systems move?Not learned 740. In the North Sea area, you sight a buoy showing an uninterrupted quick-flashing white light. Which of the four topmarks shown in illustration D031NG below will this buoy be fitted with under the IALA Buoyage system?Not learned 741. A "Norther" in the Gulf of Mexico is __________.Not learned 742. In the Northern Hemisphere, an area of counterclockwise wind circulation surrounded by higher pressure is a __________.Not learned 743. 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 744. 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 745. 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 746. In the Northern Hemisphere, where will the largest waves or swells created by a typhoon or hurricane be located?Not learned 747. In the Northern Hemisphere, an observer at point II in illustration D014NG below, should experience a wind shift from what direction?Not learned 748. In the Northern Hemisphere, the right half of the storm is known as the dangerous semicircle. Which statement(s) is/are TRUE?Not learned 749. In the Northern hemisphere which semicircle of a hurricane is the navigable semicircle?Not learned 750. In the Northern Hemisphere, which term is given to a wind that shifts counterclockwise?Not learned 751. 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 752. 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 753. In the Northern Hemisphere, what type of cloud formations would you expect to see to the west of an approaching tropical wave?Not learned 754. 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 755. 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 756. Which is TRUE in the Northern Hemisphere when a wind is said to veer?Not learned 757. In the Northern Hemisphere, what do winds veering sharply to the west or northwest with increasing speed indicate?Not learned 758. How can Northern right whales can be identified?Not learned 759. What do the numbers on isobars indicate?Not learned 760. What does the numeral in the center of a wind rose circle on a pilot chart indicate?Not learned 761. A nun buoy will __________.Not learned 762. If you observe a buoy off station which action should you take?Not learned 763. If you observe a rapid fall of barometric pressure, which action should you take?Not learned 764. If an observer in the Northern Hemisphere faces the surface wind, where is the center of low pressure located?Not learned 765. 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 766. When observing a rapid rise in barometric pressure, what may you expect?Not learned 767. How is an occluded front represented on a weather map?Not learned 768. What occurs when rising air cools to the dew point?Not learned 769. Which term defines the ocean bottom that extends from the shoreline out to an area where there is a marked change in slope to a greater depth?Not learned 770. Ocean swells originating from a typhoon can move ahead of it at speeds near __________.Not learned 771. One point of a compass is equal to how many degrees?Not learned 772. When operated over a muddy bottom, a fathometer may indicate which of the following?Not learned 773. On what does the operation of an aneroid barometer depend?Not learned 774. What option does an Electronic Plotting Aid (EPA) not have?Not learned 775. An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol?Not learned 776. An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol?Not learned 777. An orange and white buoy marking a danger area will have what symbol on it?Not learned 778. An orange and white buoy with a rectangle on it displays what information?Not learned 779. In order to insure that the racon signal is visible on your 3 cm radar, the __________.Not learned 780. You are outbound in a buoyed channel on course 015°T. You sight a white light showing a MorseNot learned 781. 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 782. When outbound from a U.S. port, what does a buoy displaying a flashing red light indicate?Not learned 783. 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 784. The passing of a low pressure system can be determined by periodically checking the __________.Not learned 785. Which term defines the paths of intended travel between three or more points?Not learned 786. 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 787. When is the peak of the hurricane season in the western North Pacific?Not learned 788. Which refers to the period at high or low tide during which there is no change in the height of the water?Not learned 789. Permanent magnetism is caused by __________.Not learned 790. The permanent magnetism of a vessel may change in polarity due to __________.Not learned 791. The permanent magnetism of a vessel may change in strength due to __________.Not learned 792. The permanent magnetism of a vessel may change in strength due to __________.Not learned 793. A phenomenon where the atmospheric pressure is higher than that of other surrounding regions is called __________.Not learned 794. A pilot chart does NOT contain information about which item?Not learned 795. Plain language is usually used on marine weather __________.Not learned 796. 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 797. 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 798. You are planning a voyage from San Francisco to Japan. Which publication contains information on the ocean routes?Not learned 799. You should plot your dead reckoning position __________.Not learned 800. You should plot a dead reckoning position after every __________.Not learned 801. You plot a fix using three lines of position and find they intersect in a triangle. The actual position of the vessel __________.Not learned 802. 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 803. 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 804. 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 805. The points on the earth's surface where the magnetic dip is 90° are __________.Not learned 806. Which term is used to define the point where the vertical rise or fall of tide has stopped?Not learned 807. 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 808. 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 809. The population of northern right whales, an endangered species, numbers approximately __________.Not learned 810. Port side daymarks may be __________.Not learned 811. Which position includes the effects of wind and current?Not learned 812. A position that is obtained by applying estimated current and wind to your vessel's course and speed is a(n) __________.Not learned 813. Which term is used for a position obtained by applying ONLY your vessel's course and speed to a known position?Not learned 814. 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 815. 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 816. When possible, a DR plot should always be started from where?Not learned 817. To predict the actual depth of water using the Tide Tables, how does one use the number obtained from the Tide Tables?Not learned 818. How do preferred channel buoys indicate the preferred channel to transit?Not learned 819. A preferred-channel buoy may be __________.Not learned 820. 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 821. The presence of stratus clouds and a dying wind will usually result in __________.Not learned 822. 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 823. The pressure gradient between the horse latitudes and doldrums runs __________.Not learned 824. Pressure gradient is a measure of __________.Not learned 825. When do the prevailing westerlies of the Southern Hemisphere blow 17-27 knots?Not learned 826. Where are the prevailing westerlies of the Southern Hemisphere located?Not learned 827. Prevailing winds between 30°N and 60°N latitude are from which direction?Not learned 828. What is the primary source of the earth's weather?Not learned 829. The principal advantage of NAVTEX radio warnings is that __________.Not learned 830. Prior to reading an aneroid barometer, why should you tap the face lightly with your finger?Not learned 831. The probability of a sudden wind may be foretold by __________.Not learned 832. 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 833. While proceeding downriver (descending) you sight a red diamond-shaped panel with small, red reflector squares in each corner on the left bank. Under the U.S. Aids to Navigation System on the Western Rivers what does this daymark indicate?Not learned 834. "Proceeding from seaward" for the purpose of the direction of buoying offshore, lateral system buoys would be proceeding ________.Not learned 835. The process by which the temperature and/or moisture characteristics of an air mass changes is called __________.Not learned 836. 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 837. Which publication is NOT carried on board U.S. merchant vessels operating under Naval Control of Shipping?Not learned 838. Which publication should you check for complete information on Puget Sound weather conditions?Not learned 839. 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 840. Which publication contains information on Naval Control of Shipping (NCS) in time of emergency or war?Not learned 841. Which publication contains information on navigation regulations, landmarks, channels, anchorages, tides, currents, and clearances of bridges for Chesapeake Bay?Not learned 842. What publication contains information about the port facilities in Cadiz, Spain?Not learned 843. Which publication indicates the HYDROLANTS or HYDROPACS issued since the previous working day?Not learned 844. What publication has information on the climate, distances, navigation regulations, outstanding landmarks, channels and anchorages of Long Island Sound?Not learned 845. Which publication lists Class I and II private aids to navigation in or along navigable waters of the United States?Not learned 846. Which publication requires infrequent corrections?Not learned 847. Which publication would describe the explosive anchorages in the ports on the east coast of the United States?Not learned 848. Which publication would NOT be used on a voyage from Houston to New York?Not learned 849. What is published by the U.S. Coast Guard?Not learned 850. What is the purpose of the "reference hand" on an aneroid barometer?Not learned 851. The purpose of the soft iron spheres mounted on arms on the binnacle is to compensate for __________.Not learned 852. Quadrantal error in a gyrocompass has its GREATEST effect on which of the following?Not learned 853. 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 854. Which radar control reduces weak echoes out to a limited distance from the ship?Not learned 855. Which radar control shortens all echoes on the display and reduces clutter caused by rain or snow?Not learned 856. Which radar control is used to reduce sea return at close ranges?Not learned 857. Which term is given to a radar display which is oriented, so that north is always at the top of the screen?Not learned 858. 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 859. 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 860. Radar makes the most accurate determination of the __________.Not learned 861. A radar range to a small, charted object such as a light will provide a line of position in which form?Not learned 862. 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 863. Your radar is set on a true motion display. Which of the following will appear to move across the PPI scope?Not learned 864. Which is TRUE of Radiation fog?Not learned 865. The radius of a circle of equal altitude of a body is equal to the __________.Not learned 866. The radius of a circle of equal altitude for a body equals the body's __________.Not learned 867. A rapid rise or fall of the barometer indicates __________.Not learned 868. Which is TRUE of Raster-scan chart data?Not learned 869. What is the reaction of a gyrocompass to an applied force known as?Not learned 870. In reading a weather map, what do closely spaced pressure gradient lines indicate?Not learned 871. The recording fathometer produces a graphic record of the __________.Not learned 872. When recording the wind direction in the weather log, which information would you report?Not learned 873. Recurvature of a hurricane's track usually results in the forward speed __________.Not learned 874. What do red sectors of navigation lights warn mariners of?Not learned 875. A red triangular daymark marks __________.Not learned 876. Which is the reference datum used in determining the heights of land features on most charts?Not learned 877. 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 878. With regard to GPS, a civilian receiver may be capable of achieving the same accuracy as a military receiver if __________.Not learned 879. 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 880. In both regions of the IALA buoyage system, which topmark shown in illustration D022NG below is used on a special mark?Not learned 881. In regions near the poles, how are the winds generally described?Not learned 882. A relative bearing is always measured from __________.Not learned 883. What is the relative bearing of an object on the port beam?Not learned 884. What is the relative bearing of an object broad on the port bow?Not learned 885. What is the relative bearing of an object broad on the port quarter?Not learned 886. What is the relative bearing of an object on the starboard beam?Not learned 887. What is the relative bearing of an object broad on the starboard bow?Not learned 888. What is the relative bearing of an object broad on the starboard quarter?Not learned 889. What is the relative bearing of an object dead astern?Not learned 890. What is the relative bearing of an object sighted dead ahead?Not learned 891. 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 892. In the relatively calm area near the hurricane center, the seas are __________.Not learned 893. You have replaced the chart paper in the course recorder. What is NOT required to ensure that a correct trace is recorded?Not learned 894. When reporting wind direction, how should you give the direction?Not learned 895. 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 896. With respect to automatic identification systems (AIS) which of the following information is broadcast every one to ten seconds?Not learned 897. With respect to automatic identification systems (AIS), which information is expected to be broadcast every 1 to 10 seconds?Not learned 898. With respect to automatic identification systems (AIS), which information is expected to be broadcast every 1 to 10 seconds?Not learned 899. With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?Not learned 900. With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?Not learned 901. With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?Not learned 902. With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.Not learned 903. With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.Not learned 904. With respect to a reversing current, when does slack water occur?Not learned 905. What results when warm moist air blows over a colder surface and is cooled below its dew point?Not learned 906. When is a revised print of a chart made?Not learned 907. The revision date of a chart is printed on which area of the chart?Not learned 908. When is the rhumb line distance the same as the great circle distance?Not learned 909. The rise and fall of the ocean's surface due to a distant storm is known as __________.Not learned 910. 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 911. In a river subject to tidal currents, the best time to dock a ship without the assistance of tugs is __________.Not learned 912. 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 913. 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 914. 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 915. Safe water buoys may show ONLY which type of light?Not learned 916. A safe water daymark has what shape?Not learned 917. A safe water mark may be __________.Not learned 918. How is a safe water mark, that can be passed close aboard on either side, painted and lighted?Not learned 919. A sailing chart could have which scale?Not learned 920. The Sailing Directions contain information on __________.Not learned 921. The Sailing Directions (Enroute) contain which information?Not learned 922. The Sailing Directions (Enroute) contain information on all of the following EXCEPT which topic of information?Not learned 923. The Sailing Directions (Planning Guide) contain information on all of the following EXCEPT which item?Not learned 924. The Sailing Directions are published in the Enroute format and which other format?Not learned 925. 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 926. 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 927. 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 928. Scales on aneroid barometers are usually graduated in inches of mercury in the general range of __________.Not learned 929. The scale on a chart is given as 1:5,000,000. What does this ratio indicate?Not learned 930. Which scale is considered a harbor chart?Not learned 931. Which scale is used to estimate wind speed by observing sea conditions?Not learned 932. Which is TRUE of a sea breeze?Not learned 933. A series of brief showers accompanied by strong, shifting winds may occur along or some distance ahead of a(n) __________.Not learned 934. The set of the current is the __________.Not learned 935. Set of the current is __________.Not learned 936. 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 937. Severe tropical cyclones (hurricanes, typhoons) occur in all warm-water oceans except the __________.Not learned 938. In shallow water, waves that are too steep to be stable, causing the crests to move forward faster than the rest of the wave. This occurrence describes which term?Not learned 939. 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 940. 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 941. If a ship is proceeding towards the magnetic equator, the uncorrected deviation due to permanent magnetism __________.Not learned 942. 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 943. What does the shoreline on charts generally represent?Not learned 944. The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean __________.Not learned 945. 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 946. You sight a spar buoy with the topmark shown in illustration D027NG below. You must take which of the following actions?Not learned 947. A sign of thunderstorm development is a cumulus cloud __________.Not learned 948. How will the signal from a ramark show on the PPI?Not learned 949. A single barometric pressure reading of 28.60 indicates __________.Not learned 950. A single line of position combined with a dead-reckoning position results in a(n) __________.Not learned 951. A single vertical magnet placed underneath the compass in the binnacle is used to compensate for __________.Not learned 952. When slanted letters are used to spell the name of a charted object you know the __________.Not learned 953. A sling psychrometer is a(n) __________.Not learned 954. What is a sling psychrometer used to measure?Not learned 955. What does a slow, gradual fall of the barometer indicate?Not learned 956. What does a slow rise in the barometric pressure forecast?Not learned 957. 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 958. Small, visible mound-like protuberances on the bottom of cumulonimbus clouds, that are potential breeding grounds for waterspouts and tornadoes, are called __________.Not learned 959. What do solid green arrows on the main body of a pilot chart indicate?Not learned 960. 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 961. 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 962. In which source could you find the number of a chart for a certain geographic area?Not learned 963. The southeast trade winds actually blow in which direction?Not learned 964. In the Southern Hemisphere the wind circulation in a high pressure system rotates in which direction?Not learned 965. In the Southern Hemisphere winds in a low pressure system rotate in which direction?Not learned 966. A special mark (yellow buoy), if lighted, may exhibit which light rhythm?Not learned 967. A special purpose buoy shall be __________.Not learned 968. What is a "Special Warning"?Not learned 969. Which term is used to describe the speed at which an ocean wave system advances?Not learned 970. The speed of sound through ocean water is nearly always __________.Not learned 971. The speed of sound in water is approximately __________.Not learned 972. A spherical buoy may be __________.Not learned 973. 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 974. 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 975. When do Spring tides occur?Not learned 976. Spring tides occur __________.Not learned 977. Which is TRUE concerning the occurrence of Spring tides?Not learned 978. Spring tides are tides that __________.Not learned 979. Squall lines with an almost unbroken line of threatening dark clouds and sharp changes in wind direction, generally precede which front?Not learned 980. "Stand" of the tide is that time when __________.Not learned 981. What is the standard atmospheric pressure as measured in inches of mercury?Not learned 982. What is the standard atmospheric pressure in millibars?Not learned 983. How does the standard magnetic compass heading differ from the true heading?Not learned 984. The Star Lists in the Nautical Almanac are based on which of the following magnitudes?Not learned 985. A star is observed at lower transit. The line of position derived from this sight is __________.Not learned 986. Which statement concerning the chartlet in illustration D010NG below is true? (Soundings and heights are in meters)Not learned 987. Which statement concerning the chartlet seen in illustration D010NG below is TRUE? (Soundings and heights are in meters)Not learned 988. Which statement concerning current is TRUE?Not learned 989. Which statement concerning GPS is TRUE?Not learned 990. Which statement describes the prevailing wind direction in mid-winter in the Gulf Coast area?Not learned 991. Which statement about an estimated position is TRUE?Not learned 992. Which statement is FALSE concerning the dangerous semicircle of a hurricane?Not learned 993. Which statement about the Flinders bar of the magnetic compass is CORRECT?Not learned 994. Which statement about a gnomonic chart is correct?Not learned 995. Which statement about gyrocompass error is TRUE?Not learned 996. Which statement about the gyrocompass is FALSE?Not learned 997. Which statement about radio navigational warnings is TRUE?Not learned 998. Which statement is TRUE when comparing cold and warm fronts?Not learned 999. Which statement is TRUE concerning apogean tides?Not learned 1000. Which statement is TRUE concerning equatorial tides?Not learned 1001. Which statement is TRUE concerning a Mercator projection?Not learned 1002. Which statement is TRUE for an unlighted, red and green, horizontally-banded buoy with the topmost band red?Not learned 1003. Which is TRUE concerning static crashes on your AM radio?Not learned 1004. Steady precipitation is typical of __________.Not learned 1005. Steam fog will occur when which conditions exists?Not learned 1006. 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 1007. 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 1008. 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 1009. You are steaming in the open ocean of the North Pacific between the Aleutian Chain and Hawaii. A warning broadcast indicates that an earthquake has occurred in the Aleutians and has generated a tsunami that is predicted to hit Hawaii. What action is necessary for the ship's safety?Not learned 1010. 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 1011. 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 1012. 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 1013. 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 1014. What does a steep barometric gradient indicate?Not learned 1015. The steepness of a cold front depends on __________.Not learned 1016. You are steering 143°T, and a light is picked up dead ahead at a distance of 18.2 miles at 2006. You change course to pass the light 5.5 miles off abeam to port. If you are making 14.5 knots, what is your ETA at a position 5.5 miles off the light?Not learned 1017. 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 1018. 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 1019. 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 1020. 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 1021. A storm's track is characterized by all of the following except __________.Not learned 1022. Stormy weather is usually associated with regions of __________.Not learned 1023. All straight lines represent great circle tracks on a chart based on which projection?Not learned 1024. Which wind is a strong, often violent, northerly wind occurring on the Pacific coast of Mexico, particularly during the colder months?Not learned 1025. The strongest winds and heaviest rains in a hurricane are found in the __________Not learned 1026. "Surface circulation" is another term for __________.Not learned 1027. The survey information upon which a chart is based is found at which location?Not learned 1028. A survey (special purpose mark) buoy __________.Not learned 1029. Swells that have outrun the storm are produced in the __________.Not learned 1030. Swell is the rise and fall of the ocean's surface due to __________.Not learned 1031. 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 1032. A sylphon cell is a part of which instrument?Not learned 1033. 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 1034. 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 1035. Which symbol represents a 10-fathom curve?Not learned 1036. Which symbol represents a 2-fathom curve?Not learned 1037. Which of the symbols shown in illustration D018NG below represents an occluded front?Not learned 1038. Which of the symbols shown in illustration D018NG below represents a warm front?Not learned 1039. What does the symbol shown in illustration D033NG below indicate on a chart?Not learned 1040. What is a system of reservoirs and connecting tubes in a gyro compass called?Not learned 1041. Which table is NOT found in the U.S. Coast Pilots?Not learned 1042. You take a bearing of 043° and 169° of two objects. What bearing of a third object will give the best fix?Not learned 1043. You take a bearing of 086° of a lighthouse. What bearing of another object would give the best fix?Not learned 1044. You take a bearing of 086° of a lighthouse. Which bearing of another object would give the best fix?Not learned 1045. You take a bearing of 142° and 259° of two objects. Which bearing of a third object will give the best fix?Not learned 1046. You take a bearing of 176° of a lighthouse. What bearing of another object would give the best fix?Not learned 1047. You take a bearing of 176° of a lighthouse. Which bearing of another object would give the best fix?Not learned 1048. You take a bearing of 191° and 313° to two objects. Which bearing of a third object will give the best fix?Not learned 1049. You take a bearing of 264° of a lighthouse. Which bearing of another object would give the best fix?Not learned 1050. You take a bearing of 264° of a lighthouse. What bearing of another object would give the best fix?Not learned 1051. You take a bearing of 313° and 076° of two objects. Which bearing of a third object will give the best fix?Not learned 1052. 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 1053. You take a bearing of 356° of a lighthouse. What bearing of another object would give the best fix?Not learned 1054. You take a bearing of 356° of a lighthouse. Which bearing of another object would give the best fix?Not learned 1055. 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 1056. While taking weather observations, you determine that the wind is blowing from the northeast. You would record the wind direction in the weather log as __________.Not learned 1057. While taking weather observations, you determine that the wind is coming from the west. In the weather log, how would you record the wind direction?Not learned 1058. Which is TRUE as the temperature of an air mass decreases?Not learned 1059. Which is TRUE as the temperature of the air reaches the dew point?Not learned 1060. 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 1061. How does the temperature change with the passage of an occluded front?Not learned 1062. Which is TRUE as the temperature for a given mass of air increases?Not learned 1063. Temperature and moisture characteristics are modified in a warm or cold air mass due to which factor?Not learned 1064. The term "flood current" refers to that time when the water __________.Not learned 1065. Which term is given to the dense black cumulonimbus clouds surrounding the eye of a hurricane?Not learned 1066. Which is the term given to the time required for a lighted aid to complete a full cycle of light changes?Not learned 1067. Which term is given to a tornado that moves out over the water from land?Not learned 1068. Which term is given to the vertical angle between the horizontal and the magnetic line of force?Not learned 1069. Which term refers to the direction a current is flowing?Not learned 1070. What does the term "tide" refer to?Not learned 1071. Which term is used to describe the time interval between successive wave crests?Not learned 1072. Which theoretical minimum number of measurements from satellites does a GPS receiver need in order to provide an exact three-dimensional position?Not learned 1073. Three or four feet of the total height of a storm surge in a hurricane can be attributed to __________.Not learned 1074. Which is TRUE of the tides in Boston Harbor?Not learned 1075. The time interval between successive wave crests is called the __________.Not learned 1076. The time meridian that is used when computing the currents for Pensacola Bay, Florida, is __________.Not learned 1077. Which time meridian is used when computing the velocity of the current for Pensacola Bay, Florida?Not learned 1078. Which time meridian is used for tide computations in New York Harbor?Not learned 1079. Time signals broadcast by WWV and WWVH are transmitted __________.Not learned 1080. When a tornado moves over the water from land it is called a __________.Not learned 1081. 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 1082. 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 1083. A triangular daymark would be colored __________.Not learned 1084. Tropical cyclones are classified by form and intensity. Which system does not have closed isobars?Not learned 1085. Tropical cyclones do not form within 5° of the Equator because __________.Not learned 1086. Tropical cyclones normally form within which of the following belts of latitude?Not learned 1087. In a tropical cyclone, in the Northern Hemisphere, a vessel hove to with the wind shifting counterclockwise is located in which position?Not learned 1088. Tropical storms and hurricanes are most likely to form in the Southern hemisphere during which months?Not learned 1089. A tropical storm is a tropical cyclone that generates winds of which speed?Not learned 1090. A tropical wave is usually preceded by __________.Not learned 1091. Which is TRUE of an aneroid barometer?Not learned 1092. A true bearing of a charted object, when plotted on a chart, will establish a __________.Not learned 1093. Which is TRUE concerning air masses near the earth's surface?Not learned 1094. Which is TRUE concerning the length of a wave?Not learned 1095. What is TRUE concerning new editions of Light Lists?Not learned 1096. Which is TRUE concerning a relative bearing?Not learned 1097. Which is TRUE concerning Spring tides?Not learned 1098. Which is TRUE concerning Wind velocity?Not learned 1099. The true course from point A to point B is 317°. A SSW wind causes a 4° leeway, variation is 6°W and deviation is 1°E. What is the magnetic compass course to steer to make good the true course?Not learned 1100. 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 1101. What is true about a front?Not learned 1102. True heading differs from magnetic heading by __________.Not learned 1103. Which is TRUE of a nun buoy in the IALA Region B system of buoyage?Not learned 1104. Which is TRUE when using the radar for navigation?Not learned 1105. Which is TRUE of the velocity of the current in large coastal harbors?Not learned 1106. Which is TRUE of a vertically-striped buoy?Not learned 1107. A tsunami is caused by a(n) __________.Not learned 1108. Two well-developed high-pressure areas may be separated by which item?Not learned 1109. Two well-developed low pressure areas may be separated by a __________.Not learned 1110. Which type of cloud is among the most dependable for giving an indication of an approaching weather system?Not learned 1111. What type of clouds are associated with a cold front?Not learned 1112. Which type of cloud is the classic "thunderhead"?Not learned 1113. Which type of cloud is composed entirely of ice crystals and is found at very high altitudes?Not learned 1114. Which type of cloud formation should be of immediate concern to small craft operators?Not learned 1115. From which type of cloud can a tornado or waterspout develop?Not learned 1116. The type of current which will have the greatest effect on the course made good for your vessel is __________.Not learned 1117. Which type of daymark is used to mark the starboard side of the channel when entering from sea?Not learned 1118. Which type of fog occurs on clear nights with very light breezes and forms when the earth cools rapidly?Not learned 1119. Which type of front forms when a cold front overtakes and forces a warm front upwards?Not learned 1120. Which type of frontal passage is associated with a relatively narrow band of precipitation?Not learned 1121. Which type of GPS receiver has at least four channels to process information from several satellites simultaneously?Not learned 1122. Which type of precipitation occurs only in thunderstorms with strong convection currents that convey raindrops above and below the freezing level?Not learned 1123. Which type of precipitation is a product of the violent convection in thunderstorms?Not learned 1124. Which type of weather could you expect soon after seeing "hook" or "comma" shaped cirrus clouds?Not learned 1125. The typical operating range of automatic identification systems (AIS) at sea is nominally __________.Not learned 1126. What is typical of warm front weather conditions?Not learned 1127. What U.S. agency is responsible for NAVAREA warnings?Not learned 1128. Under the U.S. Aids to Navigation System, which category is a yellow buoy?Not learned 1129. In the U.S. Aids to Navigation System, lateral aids as seen entering from seaward will display lights with which characteristic?Not learned 1130. In the U.S. Aids to Navigation System, what do red and green horizontally-banded buoys mark?Not learned 1131. Under the U.S. Aids to Navigation System, a special mark possesses which of the following characteristics?Not learned 1132. Under the U.S. Aids to Navigation System used on the Western Rivers, which is TRUE of the aids to navigation lights on the right descending bank?Not learned 1133. Under the U.S. Aids to Navigation System on the Western Rivers, which describes the daymarks on the right descending bank?Not learned 1134. Under the U.S. Aids to Navigation System on the Western Rivers, which is TRUE of a preferred channel buoy?Not learned 1135. 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 1136. The U.S. Coast Guard publishes __________.Not learned 1137. 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 1138. While underway, automatic identification systems (AIS) broadcast all of the following information every 1 to 10 seconds EXCEPT the __________.Not learned 1139. 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 1140. 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 1141. 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 1142. 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 1143. 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 1144. 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 1145. 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 1146. 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 1147. 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 1148. 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 1149. 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 1150. 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 1151. 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 1152. 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 1153. You are underway on course 328°T when you sight a buoy broad on your port bow. Which would indicate that you are in the best navigable water?Not learned 1154. 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 1155. 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 1156. 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 1157. 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 1158. Under the Uniform State Waterway Marking System how is a mooring buoy painted?Not learned 1159. In the United States, who broadcasts the short-range radio navigational warnings?Not learned 1160. In United States waters, a buoy having red and white vertical stripes if lighted, it will have which light characteristic?Not learned 1161. It is unlawful to approach within how many yards of a Northern Right Whale?Not learned 1162. When using an ARPA, what should you consider in order to evaluate the information displayed?Not learned 1163. When using the ARPA in heavy rain, which action should you take?Not learned 1164. When using a buoy as an aid to navigation which of the following should be considered?Not learned 1165. When using an echo sounder in deep water, it is NOT unusual to encounter which situation?Not learned 1166. When using GPS, how many theoretical position lines are required for a two-dimensional fix?Not learned 1167. When using GPS without Selective Availability, what can you expect your horizontal accuracy to be of the unit?Not learned 1168. When using horizontal sextant angles of three objects to fix your position, an indeterminate position will result in which situation?Not learned 1169. When using a Lambert conformal chart in high latitudes, which reference is used to measure angles such as bearings or courses?Not learned 1170. 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 1171. When using a radar in an unstabilized mode, fixes are determined most easily from __________.Not learned 1172. 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 1173. Using the surface analysis in illustration D049NG below, what change in the wind direction could be expected at position "D" if the low were moving northeasterly?Not learned 1174. Using the surface analysis in illustration D049NG below, what weather conditions would you expect to find at position A?Not learned 1175. Using the surface analysis in illustration D049NG below, which wind speeds are reported at position A?Not learned 1176. Using the surface analysis in illustration D049NG below, what wind speed is reported in position C?Not learned 1177. The usual sequence of directions in which a tropical cyclone moves in the Southern Hemisphere is __________.Not learned 1178. When utilizing a Pacific Coast chart, which is the reference plane of soundings?Not learned 1179. The values of the Greenwich hour angle and declination, tabulated in all almanacs, are for the _________.Not learned 1180. The value of sixty nautical miles per degree of geodetic latitude is most correct at __________.Not learned 1181. Variation is the angular measurement between which two points?Not learned 1182. Variation is a compass error that you __________.Not learned 1183. Variation is not constant; it is different with every change in __________.Not learned 1184. How is variation indicated on a small-scale nautical chart?Not learned 1185. What will a veering wind do?Not learned 1186. 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 1187. 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 1188. The velocity of a rotary tidal current will be decreased when the Moon is at which phase?Not learned 1189. The velocity of a rotary tidal current will increase when the Moon is at which phase?Not learned 1190. What will be the velocity of the tidal current south of Doubling Point, ME, at 1357 EST (ZD +5) on 3 April 1983?Not learned 1191. The velocity of the wind, its steady direction, and the amount of time it has blown determines what about a wind driven current?Not learned 1192. 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 1193. 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 1194. 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 1195. 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 1196. 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 1197. Your vessel is located at position I on the weather map in illustration D013NG below. You should experience which weather condition?Not learned 1198. 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 1199. 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 1200. 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 1201. A vessel heading NW is on a course of __________.Not learned 1202. 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 1203. A vessel heading WNW is on which course?Not learned 1204. 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 1205. 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 1206. 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 1207. When your vessel is on or near the path of an approaching tropical storm the __________.Not learned 1208. Your vessel is participating in the Voluntary Observing Ship Program, at 0600 ZT on 31 January your position is LAT 00°49'S, LONG 84°27'E. You are preparing WS Form B-80 as seen in illustration D041NG below. How should you encode the first three groups after the call sign if you estimate the wind?Not learned 1209. Your vessel is participating in the Voluntary Observing Ship Program, at 1200 ZT on 31 August, your position is LAT 43°14'S, LONG 175°44'E. You are preparing WS Form B-80 as seen in illustration D041NG below. How should you encode the first three groups after the call sign if you estimate the wind?Not learned 1210. Your vessel is participating in the Voluntary Observing Ship Program, at 1200 ZT on 31 July, your position is LAT 24° 33' N, LONG 173° 05' W. You are preparing WS Form B-80 as seen in illustration D041NG below. How should you encode the first three groups after the call sign if you estimate the wind?Not learned 1211. Your vessel is participating in the Voluntary Observing Ship Program, at 1800 ZT on 31 October your position is LAT 24°50'N, LONG 92°37'W. You are preparing WS Form B-80 as seen in illustration D041NG below. How should you encode the first three groups after the call sign if you estimate the wind?Not learned 1212. Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. The dry bulb thermometer reads 30° F (-1° C) and the wet bulb thermometer reads 28° F (-2° C). How would you encode the air temperature groups in the report?Not learned 1213. Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B- 80 as seen in illustration D041NG below. The dry bulb thermometer reads 34°F and the wet bulb thermometer reads 31°F. How would you encode the air temperature groups in the report?Not learned 1214. Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. The dry bulb thermometer reads 54°F and the wet bulb thermometer reads 50°F. How would you encode the air temperature groups in the report?Not learned 1215. Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. The dry bulb thermometer reads 78°F and the wet bulb thermometer reads 75°F. How would you encode the air temperature groups in the report?Not learned 1216. Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. You are hove to in a hurricane on a heading of 328°T. The wind is from 030° true at 119 knots. How should this be encoded on the weather report form?Not learned 1217. Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. One-half of the sky is covered with clouds, and the anemometer indicates that the apparent wind is from 340° relative at 14 knots. You are on course 307° T at 12.6 knots. How should you encode group Nddff?Not learned 1218. Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. Your position is LAT 64°42'N, LONG 02°28'W. How would this be encoded?Not learned 1219. Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. The sky is overcast, and the anemometer indicates that the apparent wind is from 144° relative at 8 knots. You are on course 162°T at 15 knots. How should you encode group Nddff?Not learned 1220. Your vessel is participating in the Voluntary Observing Ship Program. You are preparing WS Form B-80 as seen in illustration D041NG below. Three-quarters of the sky is covered with clouds, and the anemometer indicates that the apparent wind is from 226° relative at 17.7 knots. You are on course 020°T at 8 knots. How should you encode group Nddff?Not learned 1221. Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B- 80 as seen in illustration D041NG below. Twenty-five percent of the sky is covered with clouds, and the anemometer indicates that the apparent wind is from 062° relative at 13 knots. You are on course 238°T at 22 knots. How should you encode group Nddff?Not learned 1222. A vessel's position should be plotted using bearings of __________.Not learned 1223. 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 283°T, and the variation is 13°E. If the heading of your vessel at the time of the sighting is 278° per standard compass, what is the deviation?Not learned 1224. Vessel required to have an Electronic Plotting Aid (EPA) must have a device to indicate the __________.Not learned 1225. A vessel sighting a northern right whale dead ahead should __________.Not learned 1226. Your vessel is steering 283°T at 10 knots. At 0538 a light bears 350°T, and at 0552 the same light bears 002°T. What will be your distance off abeam?Not learned 1227. When your vessel is on the storm track but behind the storm's center the __________.Not learned 1228. How does visibility change after the passage of a cold front?Not learned 1229. In which voyage, between two points, is the rhumb line distance NOT approximately the same as the great circle distance?Not learned 1230. When a warm air mass is adjacent to a cold air mass, the separation line between the two is called a(n) __________.Not learned 1231. A warm air mass is characterized by __________.Not learned 1232. Warm air masses will generally have __________.Not learned 1233. When a warm air mass overtakes a cold air mass, which term is given to the contact surface?Not learned 1234. As a warm front approaches how does barometric pressure change?Not learned 1235. 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 1236. 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 1237. 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 1238. What weather change accompanies the passage of a cold front in the Northern Hemisphere?Not learned 1239. Weather conditions in the middle latitudes generally move in which direction?Not learned 1240. Which weather element cannot be measured accurately while on board a moving vessel?Not learned 1241. Which weather element cannot be measured accurately while on board a moving vessel?Not learned 1242. Weather forecast messages are usually __________.Not learned 1243. A weather forecast states that the wind will commence backing. What does this indicate if you are in the Northern Hemisphere?Not learned 1244. A weather forecast states that the wind will commence veering. In the Northern Hemisphere, what changes will occur?Not learned 1245. When does a weather front exist?Not learned 1246. Weather information is available from __________.Not learned 1247. Weather information provided by the National Weather Service (NWS) advisories should be used along with which other source of information?Not learned 1248. On a weather map, what does a large letter "H" indicate?Not learned 1249. Weather observations provided by each weather station include all of the following except which item?Not learned 1250. Weather patterns in the Gulf of Mexico area of the United States are _____.Not learned 1251. In a weather report, the term "visibility" expresses __________.Not learned 1252. Weather systems in the middle latitudes generally travel from __________.Not learned 1253. Which weather system produces strong cold winds called "Northers" during the winter months in the Gulf of Mexico?Not learned 1254. Which is a weekly publication advising mariners of important matters affecting navigational safety?Not learned 1255. What does a white buoy with a blue band signify?Not learned 1256. What does a white buoy with an open-faced orange diamond on it indicate?Not learned 1257. What does a white buoy with an orange circle marked on it indicate?Not learned 1258. What does a white buoy with an orange cross within a diamond marked on it indicate?Not learned 1259. What does a white buoy with an orange rectangle on it indicate?Not learned 1260. What does a white diamond daymark with an orange border indicate?Not learned 1261. White lights may be found on which buoys?Not learned 1262. What do widely spaced isobars on a weather map indicate?Not learned 1263. Wind direction may be determined by observing all of the following EXCEPT __________.Not learned 1264. Which winds have the greatest effect on the set, drift, and depth of the equatorial currents?Not learned 1265. Which wind pattern has the most influence over the movement of frontal weather systems over the North American continent?Not learned 1266. Which wind results from a land mass cooling more quickly at night than an adjacent water area?Not learned 1267. What wind reverses directions seasonally?Not learned 1268. The winds of the "roaring forties" are strongest near which latitude?Not learned 1269. The wind speed and direction observed from a moving vessel is known as __________.Not learned 1270. What does a wind vane on a moving vessel show?Not learned 1271. The wind velocity is higher in the dangerous semicircle of a tropical cyclone because of the __________.Not learned 1272. During the winter months, the southeast trade winds are __________.Not learned 1273. 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 1274. 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 1275. When within 300 miles of a named tropical storm or hurricane, it is standard practice to send weather reports at which time interval?Not learned 1276. If within 500 yards (460m) of a Northern Right Whale, you are lawfully obligated to take which actions?Not learned 1277. On a working copy of a weather map, a cold front is represented by what color line?Not learned 1278. On a working copy of a weather map what color is the line that represents a warm front?Not learned 1279. The world is divided into NAVAREAS for the dissemination of important marine information. Which NAVAREAS include the U.S. coasts?Not learned 1280. Which would you consult for information about the general current circulation in the North Atlantic Ocean?Not learned 1281. Where would you expect to find climatological and meteorological tables for the Gulf Coast area?Not learned 1282. Where would you find information about the time of high tide at a specific location on a particular day of the year?Not learned 1283. Where would you obtain data on currents for areas of the world not covered by the U.S. National Ocean Service?Not learned 1284. Which would be the subject of a NAVAREA warning?Not learned 1285. Yellow lights may appear on which buoys?Not learned 1286. 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 1287. 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 1288. 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 1289. 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 1290. 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 1291. 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 1292. On 11 January your vessel's 0655 zone time DR position is LAT 24°30'N, LONG 122°02'W, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 101.0° per standard compass. Variation in the area is 11.6°E. The chronometer reads 02h 52m 48s and is 02m 12s slow. What is the deviation of the standard compass?Not learned 1293. On 13 October your vessel's 1722 zone time DR position is LAT 27°36'S, LONG 136°16'E, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 266° per standard magnetic compass. Variation in the area is 2°W. The chronometer reads 08h 24m 19s and is 01m 43s fast. What is the deviation of the standard magnetic compass?Not learned 1294. On 14 January your 0746 zone time DR position is LAT 26°37.0'N, LONG 153°19.0'W. At that time, you observe the Sun bearing 123°psc. The chronometer reads 05h 49m 16s, and the chronometer error is 02m 29s fast. The variation is 3°W. What is the deviation of the standard magnetic compass?Not learned 1295. At 1444 ZT on 28 July, in DR position LAT 40° 56.8' N, LONG 167° 12.4' E, you observe an amplitude of the Moon. The upper limb of the Moon is on the visible horizon and bears 299.3° psc. The variation is 1° E. What is the deviation?Not learned 1296. At 1620 ZT on 10 September, in DR position LAT 34° 03.8' N, LONG 050° 28.4' W, you observe an amplitude of the Moon. The Moon's upper limb is observed on the visible horizon and bears 110.2° psc. The variation is 2° E. What is the deviation?Not learned 1297. On 21 April your 1542 zone time DR position is LAT 28°54.0'S, LONG 19°07.0'W. At that time, you observe the Sun bearing 299°psc. The chronometer reads 04h 44m 11s, and the chronometer error is 01m 54s fast. The variation is 3°E. What is the deviation of the standard compass?Not learned 1298. On 23 March 1983, at Kingston Point, NY, what is the earliest time after 1700 EST (ZD +5) that the predicted tide will be +2.0 feet?Not learned 1299. On 28 July your 1937 zone time DR position is LAT 26°13.0' N, LONG 78°27.0' E. At that time, you observe Deneb bearing 048.7°pgc. The chronometer reads 02h 37m 42s, and the chronometer error is 00m 15s fast. The variation is 4°W. What is the gyro error?Not learned 1300. On 28 November your vessel's 0652 DR position is LAT 37°30'N, LONG 124°12'W, when an amplitude of the Sun is observed. The Sun's center is on the visible horizon and bears 103° per standard magnetic compass. Variation in the area is 16.3°E. The chronometer reads 02h 54m 18s and is 02m 06s fast. What is the deviation of the compass?Not learned 1301. On 30 July, your 0200 zone time (ZD +4) DR position is LAT 43°48'N, LONG 78°00 W. At that time, you observe Polaris bearing 008.7°psc. The chronometer time of the observation is 05h 58m 07s, and the chronometer is 0m 23s slow. The variation is 10.5°W. What is the deviation of the magnetic compass?Not learned 1302. On 31 October your 1700 zone time DR position is LAT 27°17.0'N, LONG 116°10.0'W, when an amplitude of the Sun is observed. The Sun's center is on the visible horizon and bears 246.5° per standard magnetic compass. Variation in the area is 8.5°E. The chronometer reads 01h 01m 23s and the chronometer error is 01m 54s slow. What is the deviation of the standard compass?Not learned 1303. You depart LAT 40°42.0'N, LONG 74°01.0'W, and steam 3365.6 miles on course 118°T. What is the longitude of your arrival by Mercator sailing?Not learned 1304. You depart LAT 49°45.0'N, LONG 06°35.0'W, and steam 3599 miles on course 246.5°T. What is the longitude of your arrival by Mercator sailing?Not learned 1305. You desire to make good a true course of 038°. The variation is 5°E, magnetic compass deviation is 4°W, and gyrocompass error is 4°W. A southeasterly wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?Not learned 1306. You desire to make good a true course of 279°. The variation is 8°W, magnetic compass deviation is 3°E, and gyrocompass error is 1°E. A north-northwesterly wind produces 3° leeway. What is the course to steer per standard magnetic compass (psc) to make the true course good?Not learned 1307. You receive a distress call from a vessel reporting her position as LAT 30°21'N, LONG 88°34'W. Your position is LAT 24°30'N, LONG 83°00'W. Determine the true course and distance to the distress scene by Mercator sailing.Not learned 1308. (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 1309. Two beacons form a range in the direction of 221.5°T. The range is seen in line from your vessel bearing 223° per gyrocompass. The variation in the area is 4°E. What is the error of your gyrocompass?Not learned 1310. Your vessel departs LAT 32°45'N, LONG 79°50'W, and is bound for LAT 34°21'S, LONG 18°29'E. Determine the distance by Mercator sailing.Not learned 1311. Your vessel has a draft of 23 feet. On 23 June 1983 you wish to pass over a temporary obstruction near Beaufort, SC, that has a charted depth of 22 feet. Allowing for a safety margin of 3 feet, what is the earliest time after 1600 DST (ZD +4) that this passage can be made?Not learned 1312. 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 1313. If the magnetic heading is greater than the compass heading, what direction is the deviation?Not learned 1314. What are the quadrantal spheres used for?Not learned 1315. What is the difference between magnetic heading and compass heading called?Not learned 1316. On 4 October your 1907 zone time DR position is LAT 25°15.0'S, LONG 105°44.0'E. At that time, you observe Deneb bearing 011.5°psc. The chronometer reads 00h 07m 42s, and the chronometer error is 00m 36s fast. The variation is 7.5°W. What is the deviation of the standard compass?Not learned 1317. Which of the following is a compass card without north-seeking capability that is used for relative bearings?Not learned 1318. On 10 November 2023 at 2030, 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 1319. On 14 October 2023, you will be docking on the Southern Branch Elizabeth River, VA at the first high tide. The berth is located between NOAA reference tidal station #8638660 and reference station #8639348. What time (LST) will you be dockingNot learned 1320. On 9 November 2023 at 1130, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). Your vessel will transit 15nm and make good 10.0 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 1321. You are in a channel inbound from sea. A daymark used to mark a channel junction, when the preferred channel is to port will have the shape indicated by what letter in illustration D045NG below?Not learned 1322. Which item in illustration D034NG below shows a fixed and flashing light?Not learned 1323. According to Buys Ballot's law, when an observer in the Northern Hemisphere experiences a northeast wind, where is the center of low pressure located?Not learned 1324. When using GPS, how many theoretical position lines are required for a three-dimensional fix?Not learned 1325. The Light List indicates that a light has a nominal range of 14 miles and is 42 feet (12.7 m) high. If the visibility is 16 miles and your height of eye is 20 feet (6.1 m), at which approximate distance will you sight the light?Not learned 1326. The Light List shows that a navigational light has a nominal range of 15 miles and a height above water of 40 feet (12.2 meters). Your height of eye is 25 feet (7.6 meters) and the visibility is 5 miles. At about what range will you FIRST sight the light?Not learned 1327. Geographic range is the maximum distance at which a light may be seen under which conditions?Not learned