Q412 - Navigation General: Near Coastal, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. Which type of daymark is used to mark the port side of the channel when entering from sea?Not 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 Southern Hemisphere experiences a northwest wind, where is the center of the low pressure located?Not learned 15. For an accurate barometer check, you would __________.Not learned 16. Which action is the safest and most prudent procedure to follow while navigating in the vicinity of a tropical cyclone?Not learned 17. 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 18. When adjusting a magnetic compass for error, a deviation table should be made __________.Not learned 19. What is an advantage of the magnetic compass aboard vessels?Not learned 20. Which agency maintains federal aids to navigation?Not learned 21. Which agency publishes the Light Lists?Not learned 22. The agonic line on an isomagnetic chart indicates the __________.Not learned 23. All aids to navigation listed in the Mississippi River System Light List are shown as miles from a reference point and on the __________.Not learned 24. Air circulation is caused or affected by __________.Not learned 25. An air mass that has moved down from Canada would most likely have which symbols?Not learned 26. Air masses near the earth's surface __________.Not learned 27. When is an air mass termed "warm"?Not learned 28. Air temperature varies with __________.Not learned 29. Which is TRUE of an alternating light?Not learned 30. How are altocumulus clouds defined?Not learned 31. 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 32. What is TRUE concerning an anemometer on a moving vessel?Not learned 33. An aneroid barometer on a boat should always be __________.Not learned 34. An aneroid barometer is an instrument __________.Not learned 35. Aneroid barometers are usually calibrated to indicate atmospheric pressure in which units?Not learned 36. At what angle to the isobars do surface winds blow over the open sea?Not learned 37. 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 38. Which is a characteristic of anticyclones?Not learned 39. 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 40. What should you apply to a fathometer reading to determine the depth of water?Not learned 41. As it approaches, what will a typical warm front bring?Not learned 42. You are approaching a light fitted with a RACON. The light may be identified on the radar by __________.Not learned 43. When approaching a preferred-channel buoy, the best channel is NOT indicated by the __________.Not learned 44. You are approaching a sea buoy which emits a racon signal. This signal is most frequently triggered by which type of radar?Not learned 45. 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 46. 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 47. 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 48. 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 49. 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 50. 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 51. 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 52. 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 53. What is the approximate wave length of an X Band Radar operating on a frequency of approximately 9.5 GHz?Not learned 54. What area of the earth cannot be shown on a standard Mercator chart?Not learned 55. On an Army Corps of Engineers navigation map, how is each mile A.H.P. on the Lower Mississippi River marked?Not learned 56. 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 57. Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel?Not learned 58. The ARPA may swap targets when automatically tracking if two targets are in which situation?Not learned 59. Your ARPA has been tracking a target and has generated the targets course and speed. The radar did not receive a target echo on its last two scans due to the weather. What should you expect under these circumstances?Not learned 60. Your ARPA has two guard zones. What is the purpose of the inner guard zone?Not learned 61. 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 62. Which are associated with Cumulonimbus clouds?Not learned 63. Which term describes the atmosphere in the vicinity of a high pressure area?Not learned 64. Atmospheric pressure may be measured with a(n) __________.Not learned 65. Atmospheric pressure at sea level is equal to __________.Not learned 66. 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 67. Automatic identification systems (AIS) are expected to broadcast all of the following information EXCEPT __________.Not learned 68. Automatic identification systems (AIS) are required to do which of the following?Not learned 69. On which of the following does an automatic identification system (AIS) transponder transmit and receive information?Not learned 70. Which two channels does an automatic identification system (AIS) transponder use to transmit and receive information broadcasts?Not learned 71. 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 72. What is the average speed of the movement of a hurricane following the recurvature of its track?Not learned 73. What is the average speed of movement of a hurricane prior to recurvature?Not learned 74. To avoid error, how should you read the scale of an aneroid barometer?Not learned 75. Barometers are calibrated at which standard temperature?Not learned 76. What does a barometer measure?Not learned 77. When your barometer reading changes from 30.25 to 30.05 in a 12-hour period it indicates __________.Not learned 78. Barometer readings in weather reports are given in terms of pressure at which reference location?Not learned 79. A barometer showing falling pressure indicates the approach of a __________.Not learned 80. What is a barometric pressure reading of 29.92 inches of mercury is equivalent to?Not learned 81. The bases of middle clouds are located at altitudes of between __________.Not learned 82. What is the basic principle of the magnetic compass?Not learned 83. 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 84. What benefit is a weather bulletin to a mariner?Not learned 85. Which defines the height of tide?Not learned 86. Brief, violent showers frequently accompanied by thunder and lightning are usually associated with __________.Not learned 87. What does a buoy with a composite group-flashing light indicate?Not learned 88. Which buoy will NOT display white retroreflective material?Not learned 89. Which of the buoys listed below could be used to mark an anchorage?Not learned 90. When a buoy marks a channel bifurcation, the preferred channel is NOT indicated by __________.Not learned 91. Buoys which mark dredging areas are painted which color?Not learned 92. How are buoys which mark isolated dangers painted?Not learned 93. Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic?Not learned 94. Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE?Not learned 95. A buoy marking a wreck will show a(n) __________.Not learned 96. Which buoy may be even numbered?Not learned 97. Which buoy may be odd numbered?Not learned 98. Which buoy may be odd numbered?Not learned 99. Which buoy is NOT numbered?Not learned 100. 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 101. A buoy having red and green horizontal bands would have which light characteristic?Not learned 102. 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 103. In most cases, the direction of the apparent wind lies between the bow and which reference point?Not learned 104. If you are caught in the left semicircle of a tropical storm, in the Southern Hemisphere, which action should you take?Not learned 105. What will cause the ARPA to emit a visual alarm, audible alarm, or both?Not learned 106. What causes compass deviation?Not learned 107. What causes deviation in a magnetic compass?Not learned 108. Which causes the Earth's irregular heating?Not learned 109. Which is the cause of tropic tides?Not learned 110. What can cause a tsunami?Not learned 111. What causes variation in a compass?Not learned 112. 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 113. When changing from a compass course to a true course, which should you apply?Not learned 114. 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 115. Which characteristic and color will a preferred-channel buoy show?Not learned 116. What is characteristic of an isophase light?Not learned 117. Which characteristics will a lighted buoy that is to be left to starboard, when entering a U.S. port from seaward have?Not learned 118. Which would be the characteristic of an occulting light?Not learned 119. What is the characteristic of a quick flashing light?Not learned 120. What characteristics can be used to identify a lighthouse?Not learned 121. Which is a characteristic of the weather preceding an approaching warm front?Not learned 122. 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 123. On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. Which is TRUE of the red sector?Not learned 124. Charts should be corrected by using information published in which text?Not learned 125. Chart correction information is NOT disseminated through the __________.Not learned 126. 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 127. 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 128. 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 129. 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 130. What do chart legends printed in capital letters indicate about the associated landmark?Not learned 131. A chart position enclosed by a semi-circle is a(n) __________.Not learned 132. A chart position enclosed by a square is a(n) __________.Not learned 133. Charts showing the coast of Mexico are produced by the United States __________.Not learned 134. Which defines the term charted depth?Not learned 135. What are Cirrus clouds primarily composed of?Not learned 136. Which class of tide prevails in the greatest number of important harbors on the Atlantic Coast?Not learned 137. What classification of tropical cyclone would have closed isobars, counter clockwise rotary circulation, and sustained winds between 34 and 63 knots?Not learned 138. What do clear skies, with the exception of a few cumulus clouds indicate?Not learned 139. 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 140. The climate of the eastern coast of the Gulf of Mexico __________.Not learned 141. The climate of the northern coast of the Gulf of Mexico is _________.Not learned 142. Clouds are classified according to their __________.Not learned 143. Which cloud commonly produces a halo about the Sun or Moon?Not learned 144. 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 145. Which cloud is described as a low, dark, sheet-like cloud which is associated with continuous precipitation for many hours?Not learned 146. 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 147. How are clouds formed?Not learned 148. When would cloud formations be minimal?Not learned 149. What is the name of a cloud of marked vertical development (often anvil-shaped) and produces showers?Not learned 150. Clouds with the prefix "nimbo" in their name __________.Not learned 151. A cloud sequence of cirrus, cirrostratus, and altostratus clouds followed by rain usually signifies the approach of which front?Not learned 152. Which clouds is a thin, whitish, high cloud popularly known as "mares' tails"?Not learned 153. Which cloud type is normally associated with thunderstorms?Not learned 154. The Coast Guard broadcasts urgent marine storm warning messages on which of the following frequencies?Not learned 155. 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 156. Coast Pilots and navigational charts are kept corrected and up-to-date by using the __________.Not learned 157. When cold air displaces warm air you have a(n) __________.Not learned 158. 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 159. A cold front moving in from the northwest can produce __________.Not learned 160. As a cold front passes how do the pressure and the winds change?Not learned 161. What color lights do lighted information markers display?Not learned 162. What is the color scheme of navigational marks used for informational or regulatory purposes?Not learned 163. What is a common unit of measure for atmospheric pressure?Not learned 164. Which is the most commonly encountered fog at sea?Not learned 165. When compared to air temperature, which factor is most useful in predicting fog?Not learned 166. Compared to a low pressure system, generally the air in a high is __________.Not learned 167. What is the compass course of a vessel heading NNE?Not learned 168. What is the compass course of a vessel heading ESE?Not learned 169. What is the compass course of a vessel heading NNW?Not learned 170. What is the compass course of a vessel heading NW?Not learned 171. What is the compass course of a vessel heading WNW?Not learned 172. What is the compass course of a vessel heading SW?Not learned 173. The compass deviation changes as the vessel changes __________.Not learned 174. Compass error is equal to the __________.Not learned 175. The compass error of a magnetic compass that has no deviation is __________.Not learned 176. Which is TRUE if the compass heading and the magnetic heading are the same?Not learned 177. The compass rose on a nautical chart indicates both variation and __________.Not learned 178. The compass rose on a nautical chart indicates both variation and which other information?Not learned 179. Which of the following compensates for errors introduced when a vessel heels over?Not learned 180. Which compensates for induced magnetism in the horizontal soft iron of a vessel?Not learned 181. Complete information on weather broadcasts throughout the world is contained in __________.Not learned 182. Which condition exists in the eye of a hurricane?Not learned 183. Which condition indicates that you are in a hurricane's dangerous semicircle in the Northern hemisphere?Not learned 184. Which condition(s) is(are) necessary for the formation of dew?Not learned 185. Which condition will occur after a cold front passes?Not learned 186. Which condition suggests that your present position lies in the navigable semicircle of a tropical storm?Not learned 187. Which conditions should a vessel entering the eye of a hurricane expect?Not learned 188. Which condition would NOT indicate the approach of a tropical storm?Not learned 189. Who should be consulted for changing conditions of controlling depths in major channels?Not learned 190. What does not contribute to the commercial GPS receiver position error?Not learned 191. By convention, what color is the south pole of a magnet painted?Not learned 192. By convention, the Earth's south magnetic pole is which color?Not learned 193. By convention, the north pole of a magnet is painted which color?Not learned 194. 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 195. Which correction(s) must be applied to an aneroid barometer?Not learned 196. The correction(s) which must be applied to an aneroid barometer reading include(s) __________.Not learned 197. If you count 20 seconds between seeing lightning and hearing the thunder, how far is the storm away from you?Not learned 198. You are on course 042°T. To check the course of your vessel you should observe a celestial body on which bearing?Not learned 199. 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 200. You are on course 138°T. To check the latitude of your vessel you should observe a celestial body on which bearing?Not learned 201. You are on course 312°T. To check the speed of your vessel you should observe a celestial body on which bearing?Not learned 202. You are on course 238°T. To check the course of your vessel you should observe a celestial body on which bearing?Not learned 203. You are on course 303°T. To check the speed of your vessel you should observe a celestial body on which bearing?Not learned 204. When crossing a front how do isobars tend to change?Not learned 205. Which of the following should be done when crossing the magnetic equator?Not learned 206. Cumulonimbus clouds are formed by __________.Not learned 207. Cumulonimbus clouds are most likely to accompany a(n) __________.Not learned 208. What do cumulus clouds that have undergone vertical development and have become cumulonimbus in form indicate?Not learned 209. When does a current perpendicular to a vessel's track have the greatest effect on the vessel's course made good?Not learned 210. Current refers to the __________.Not learned 211. If the current and wind are in the same direction, what does the sea surface represent concern the true wind speed?Not learned 212. If the current and wind are in the same direction, the sea surface represents a wind speed __________.Not learned 213. If the current and wind are in opposite directions, the sea surface represents __________.Not learned 214. Which current would you encounter on a direct passage from southern Africa to Argentina, South America?Not learned 215. A cyclone in its final stage of development is called a(n) __________.Not learned 216. In a cyclone, where is the lowest pressure found?Not learned 217. Cyclones tend to move __________.Not learned 218. Which is the only cylindrical chart projection widely used for navigation?Not learned 219. The Daily Memorandum contains which information?Not learned 220. The daily recurring pattern of pressure changes most noticeable in low latitudes is the __________.Not learned 221. The dangerous semicircle of a hurricane in the Northern Hemisphere is that area of the storm __________.Not learned 222. Where is the dangerous semicircle located on a hurricane in the Southern Hemisphere?Not learned 223. The dangerous semicircle of a typhoon in the Southern Hemisphere is that area __________.Not learned 224. Where can information about the direction and velocity of rotary tidal currents be found?Not learned 225. The datum from which the predicted heights of tides are reckoned in the tide tables is __________.Not learned 226. 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 227. Which datum is used for soundings on charts of the East Coast of the United States?Not learned 228. When daylight savings time is kept, the times of tide and current calculations must be adjusted. How can this be accomplished?Not learned 229. Which daymark has no lateral significance?Not learned 230. A daymark used to indicate the safe water in a channel will have which of the shapes shown in illustration D045NG below?Not learned 231. Which is TRUE of a dead reckoning (DR) plot?Not learned 232. A dead reckoning (DR) plot __________.Not learned 233. When should your dead reckoning position be plotted?Not learned 234. A decrease in barometric pressure is associated with all of the following except __________.Not learned 235. Which defines an isotherm?Not learned 236. The range of tide is the __________.Not learned 237. Which defines a wave's fetch?Not learned 238. What is the definition of height of tide?Not learned 239. The dense black cumulonimbus clouds surrounding the eye of a hurricane are called __________.Not learned 240. The depth of the water is indicated on a chart as 32 meters. What is this equal to?Not learned 241. What describes an accurate position that is NOT based on any prior position?Not learned 242. The vertical distance from the tidal datum to the level of the water is the __________.Not learned 243. Which describes a diurnal tide?Not learned 244. What describes an ebb current?Not learned 245. What describes a flood current?Not learned 246. Which describes a light having characteristics which include color variations?Not learned 247. Which describes a line of position derived by radar range from an identified point on a coast?Not learned 248. Which is TRUE concerning privately maintained aids to navigation included in the Light List?Not learned 249. Which describes the result when you turn on the fast time constant (differentiator) control of a radar?Not learned 250. Which describes the wind circulation around a high-pressure center in the Northern Hemisphere?Not learned 251. What is the direction of rotation of tropical cyclones, tropical storms and hurricanes in the Northern Hemisphere?Not learned 252. 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 253. Despite weather predictions for continued good weather, a prudent mariner should be alert for all of the following, EXCEPT a sudden __________.Not learned 254. You can determine if your vessel's position is in the dangerous or navigable semicircle of a hurricane by __________.Not learned 255. 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 256. 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 257. Deviation is the angle between the __________.Not learned 258. Deviation is caused by __________.Not learned 259. Deviation in a compass is caused by which of the following?Not learned 260. Deviation which is maximum on intercardinal compass headings may be removed by the __________.Not learned 261. The difference in degrees between true north and magnetic north is called __________.Not learned 262. Which is the difference between the DR position and a fix, both of which have the same time?Not learned 263. The difference between the heights of low and high tide is the __________.Not learned 264. The direction a vessel is pointed at any given time is the __________.Not learned 265. The direction in which a vessel is steered is the course. The path actually followed is the __________.Not learned 266. The direction in which a vessel should be steered between two points is known by which term?Not learned 267. 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 268. Distance along a track line is measured on a Mercator chart by using which method?Not learned 269. What is the distance from the bottom of a wave trough to the top of a wave crest?Not learned 270. The diurnal inequality of the tides is caused by __________.Not learned 271. The diurnal pressure variation is most noticeable in the __________.Not learned 272. The diurnal variation of pressure is most noticeable __________.Not learned 273. The diurnal variation of pressure is not visible in the middle latitudes in winter because __________.Not learned 274. When drawing a weather map and an isobar crosses a front, the isobar is drawn __________.Not learned 275. What does the drift and set of tidal, river, and ocean currents refer to?Not learned 276. Early indications of the approach of a hurricane may be all of the following EXCEPT __________.Not learned 277. 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 278. What is an ebb current?Not learned 279. 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 280. ECDIS units incorporate Digital Chart Data that utilizes which formats?Not learned 281. All echo-sounders can measure the __________.Not learned 282. 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 283. When does the effects of priming of the tides occur?Not learned 284. Eight points of a compass are equal to how many degrees?Not learned 285. An electronic depth finder operates on which principle?Not learned 286. What enables you to estimate the bearing of a storm's center?Not learned 287. 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 288. 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 289. 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 290. 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 291. 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 292. 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 293. 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 294. 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 295. 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 296. 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 297. 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 298. 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 299. 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 300. 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 301. 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 302. As you enter a U.S. channel from seaward, which is TRUE concerning the numbers on the buoys?Not learned 303. When entering a channel from seaward, the numbers on buoys __________.Not learned 304. 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 305. When entering from seaward, what does a buoy displaying a composite group (2+1) flashing red light indicate?Not learned 306. When entering from seaward, what does a buoy displaying a single-flashing red light indicate?Not learned 307. Entering from seaward, what do triangular-shaped daymarks mark?Not learned 308. 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 309. Which error is NOT included in the term "current" when used in relation to a fix?Not learned 310. How can you estimate the position of a tropical storm's center?Not learned 311. What should you expect when you encounter a tsunami in the open ocean?Not learned 312. You can expect frontal activity when two air masses collide and __________.Not learned 313. The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the __________.Not learned 314. 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 315. Which factor has the greatest effect on the amount of gain required to obtain a fathometer reading?Not learned 316. Which feature, when set to zero, might allow a GPS unit to have an accuracy equivalent to Precise Positioning Service receiver capability?Not learned 317. To find a magnetic compass course from a true course what must you apply?Not learned 318. To find the specific phase characteristic of a lighthouse on a sound of the United States you would use which reference?Not learned 319. Which can you use to indicate the bearing of the center of a hurricane or tropical storm?Not learned 320. The first indications a mariner will have of the approach of a warm front will be __________.Not learned 321. What is the FIRST sign of the existence of a well-developed tropical cyclone?Not learned 322. What is the first visible indication of the presence of a tropical cyclone or hurricane?Not learned 323. What does the Flinders bar on a magnetic compass compensate for?Not learned 324. The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval?Not learned 325. The flow of air around an anticyclone in the Southern Hemisphere is __________.Not learned 326. Fog forms when which condition exists?Not learned 327. How can you follow the approach of a dangerous cyclonic storm?Not learned 328. Which of the following is associated with consistently high barometric pressure?Not learned 329. Which item is NOT associated with cumulonimbus clouds?Not learned 330. Which of the following is a boundary between two air masses?Not learned 331. Which of the following causes the development of an occluded front?Not learned 332. Which of the following causes a frontal thunderstorm?Not learned 333. Which of the following describes the principal purpose of magnetic compass adjustment?Not learned 334. Which of the following is NOT a form of precipitation?Not learned 335. Which of the following must the electronic chart of an ECDIS display, as required by IMO/IHO?Not learned 336. Which of the following represents the slope of a warm front?Not learned 337. Which of the following is a standard correction applied to the reading of an aneroid barometer?Not learned 338. Which of the following statements concerning frontal movements is TRUE?Not learned 339. Which of the following statements is FALSE?Not learned 340. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 341. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 342. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 343. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 344. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 345. Which of the following traits possessed by an articulated light makes it superior to other types of buoys?Not learned 346. Which of the following typically happens to the barometric pressure after a cold front passes?Not learned 347. Which of the following is the most useful factor for predicting weather?Not learned 348. 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 349. Which form of cloud, that is often known as "mackerel sky", is generally associated with fair weather?Not learned 350. The four standard light colors used for lighted aids to navigation are red, green, white, and __________.Not learned 351. Freezing salt water spray should be anticipated when the air temperature drops below what temperature?Not learned 352. General information about the location, characteristics, facilities, and services for U.S. and foreign ports may be obtained from which publication?Not learned 353. In general, on how many radio channels will an automatic identification system (AIS) operate?Not learned 354. Which general weather conditions should you expect to find in a low-pressure system?Not learned 355. A generally circular low pressure area is called a(n) __________.Not learned 356. Generally speaking, you should expect to find low atmospheric pressure prevailing in the earth's __________.Not learned 357. Generally speaking, in the Northern Hemisphere, when winds are blowing from between SE and SW the barometric reading __________.Not learned 358. Good weather is usually associated with a region of __________.Not learned 359. Most GPS receivers use the Doppler shift of the carrier phase to compute __________.Not learned 360. When is the greatest directive horizontal force exerted on the magnetic compass of a vessel?Not learned 361. A green buoy has a yellow triangle on it. What type of buoy is this?Not learned 362. Red lights may appear on which buoys?Not learned 363. 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 364. What happens to the barometric pressure after a cold front passes?Not learned 365. What happens to the intensity of a hurricane as it reaches higher latitudes and cooler waters?Not learned 366. How often is The Local Notice to Mariners updated?Not learned 367. You are heading in a northerly direction when you come across an easterly current. Your vessel will respond in which manner?Not learned 368. 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 369. Heeling error is defined as the change of deviation for a heel of __________.Not learned 370. The height of a light is measured from which reference plane?Not learned 371. The height of a wave is the vertical distance from which reference points?Not learned 372. Most high pressure areas in the United States are accompanied by __________.Not learned 373. As a high pressure system approaches, the barometer reading __________.Not learned 374. As a high-pressure system approaches, which is TRUE concerning the barometer reading?Not learned 375. The highest frequency of tropical cyclones in the North Atlantic Ocean occurs during which time frame?Not learned 376. Which system provides the highest level of commercial navigational accuracy?Not learned 377. 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 378. Hot air can hold __________.Not learned 379. 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 380. A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT __________.Not learned 381. When a hurricane passes over colder water or land and loses its tropical characteristics, the storm becomes a(n) __________.Not learned 382. The hurricane season in the North Atlantic Ocean reaches its peak during which month?Not learned 383. A HYDROLANT warning would normally be sent for all of the following EXCEPT __________.Not learned 384. A hygrometer is a device used for determining __________.Not learned 385. What does a hygrometer measure?Not learned 386. Under the IALA-B Buoyage System, when entering from seaward, a buoy that should be left to port will be which color?Not learned 387. In the IALA Buoyage System, preferred-channel-to-port or preferred-channel-to-starboard buoys, which is TRUE when fitted with lights?Not learned 388. Under the U.S. Aids to Navigation System, what does a lighted buoy with a spherical topmark mark indicate?Not learned 389. Under the IALA cardinal system, a mark with quick white light showing 3 flashes every 10 seconds indicates that the safest water in the area is in which location?Not learned 390. Illustration D011NG below represents the geographic location of a vessel and the radar presentation at the same time. Which statement is TRUE?Not learned 391. Illustration D011NG below represents the geographic location of a vessel and the radar presentation at the same time. Which statement is TRUE?Not learned 392. In illustration D039NG below, which number indicates cirrus clouds?Not learned 393. In illustration D039NG below, what type of cloud is indicated by the number five?Not learned 394. In illustration D039NG below, what type of cloud is indicated by the number four?Not learned 395. In illustration D039NG below, what type of cloud is indicated by the number one?Not learned 396. In illustration D044NG below, a pillar buoy is indicated by which letter?Not learned 397. In illustration D044NG below, what type of buoy is indicated by the letter A?Not learned 398. In illustration D045NG below, a green-and-red banded daymark, with the uppermost band green, will have which of the following shapes?Not learned 399. In illustration D051NG below what is indicated by the position labeled "C"?Not learned 400. In illustration D051NG below, why was the position labeled "C" plotted?Not learned 401. In illustration D051NG below, why was the position labeled "E" plotted?Not learned 402. In illustration D051NG below, why was the position labeled "D" plotted?Not learned 403. What is the MOST important feature of the material used for making the binnacle of a standard magnetic compass?Not learned 404. The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is __________.Not learned 405. Which is the most important information to be obtained from a barometer?Not learned 406. An important lunar cycle affecting the tidal cycle is called the nodal period. How long is this cycle?Not learned 407. What is the most important source of information to be used in correcting charts and keeping them up to date?Not learned 408. 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 409. What indicates the arrival of a hurricane within 24 to 36 hours?Not learned 410. What indicates a buoy that should be left to port when entering from seaward? (U.S. Aids to Navigation System)Not learned 411. What indicates that a tropical cyclone may be within 500 to 1,000 miles of your position?Not learned 412. Which indication on the barometer is most meaningful in forecasting weather?Not learned 413. 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 414. Where is induced magnetism found?Not learned 415. What information is found in the chart title?Not learned 416. What information is NOT found in the chart title?Not learned 417. Which information is found in the chart title?Not learned 418. Which information must automatic identification systems (AIS) automatically provide to appropriately equipped shore stations, vessels and aircraft?Not learned 419. Which information does the outer ring of a compass rose on a nautical chart provide?Not learned 420. Which information is NOT required to be posted in or near the wheelhouse?Not learned 421. Which item contains information about temporary, short-term changes affecting the safety of navigation in U.S. waters?Not learned 422. Where can information for updating paper nautical charts primarily be found?Not learned 423. How are you informed of defects or changes in aids to navigation?Not learned 424. You have been informed that dredging operations may be underway in your vicinity. Which buoy indicates the dredging area?Not learned 425. The instrument most commonly used to gather the data for determining the relative humidity is the __________.Not learned 426. An instrument designed to maintain a continuous record of atmospheric pressure is a(n) __________.Not learned 427. An instrument that indicates wind direction is known as a(n) __________.Not learned 428. An instrument that maintains a continuous record of humidity changes is called a __________.Not learned 429. An instrument which maintains a continuous record of temperature changes is called a __________.Not learned 430. Which instrument may a towing vessel, engaged in towing exclusively on the Western Rivers, use in place of a magnetic compass?Not learned 431. What is used to measure wind velocity?Not learned 432. Which instrument is used to measure the relative humidity of the air?Not learned 433. Which instrument is used to predict the approach of a low pressure system?Not learned 434. An instrument useful in predicting fog is the __________.Not learned 435. How is the intensity of a light expressed in the Light Lists?Not learned 436. 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 437. Isobars on a weather map are useful in predicting which element of the weather?Not learned 438. Isogonic lines are lines on a chart indicating __________.Not learned 439. On an isomagnetic chart, the line of zero variation is the __________.Not learned 440. Which item in illustration D034NG below shows a flashing light?Not learned 441. Which item in illustration D034NG below shows a MorseNot learned 442. Which item in illustration D034NG below shows an occulting light?Not learned 443. After an item of required safety equipment on a towing vessel fails, the owner or Master must consider numerous factors before continuing the voyage. Which factor should NOT be included in his/her decision?Not learned 444. Which kind of conditions would you observe as the eye of a storm passes over your vessel's position?Not learned 445. What kind of pressure systems travel in tropical waves?Not learned 446. What kind of weather would you expect to accompany the passage of a tropical wave?Not learned 447. The largest waves (heaviest chop) will usually develop where the wind blows __________.Not learned 448. Which is TRUE of a lateral system buoy displaying a quick flashing light?Not learned 449. A latitude line will be obtained by observing a body __________.Not learned 450. The left half of the storm is called the navigable semicircle because __________.Not learned 451. What is the length of a nautical mile?Not learned 452. The length of a wave is the length __________.Not learned 453. 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 454. In which situation is the light characteristic of composite group flashing (2 + 1) used in the Aids to Navigation System on the Western Rivers?Not learned 455. The light characteristic of flashing is used in the Aids to Navigation System on the Western Rivers for lights on __________.Not learned 456. Which light characteristic may be used on a special mark?Not learned 457. Which light characteristic may be used on a special purpose mark?Not learned 458. 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 459. Which term is given to a light that has a light period shorter than its dark period?Not learned 460. Which is TRUE concerning Light Lists for coastal waters?Not learned 461. The Light List Does NOT contain information on __________.Not learned 462. 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 463. 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 464. 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 465. 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 466. 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 467. 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 468. 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 469. 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 470. 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 471. What is the light phase characteristic of a lighted isolated-danger mark?Not learned 472. The light rhythm of MorseNot learned 473. 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 474. What lights would you see on the Illinois water way when any wickets of the dam or bear traps are open, or partially open, which may cause a set in the current conditions in the upper lock approach?Not learned 475. Which would you expect to see on a lighted preferred-channel buoy?Not learned 476. What is a lighted safe water mark fitted with to aid in its identification?Not learned 477. Lighted white and orange buoys must show which color light?Not learned 478. 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 479. What is the name given to lines on a chart which connect points of equal magnetic variation?Not learned 480. A line of clouds, sharp changes in wind direction, and squalls are most frequently associated with a(n) __________.Not learned 481. The line connecting the points of the earth's surface where there is no dip is the __________.Not learned 482. A line connecting all possible positions of your vessel at any given time is a __________.Not learned 483. The line which connects the points of zero magnetic dip is __________.Not learned 484. Lines drawn through points on the Earth having the same atmospheric pressure are known by which term?Not learned 485. A line of position is __________.Not learned 486. A line of position from a celestial observation is a segment of which choice?Not learned 487. A line of position formed by sighting two charted objects in line is called a(n) __________.Not learned 488. Lines of position may be __________.Not learned 489. Which term is given to a line on a weather chart connecting places which have the same barometric pressure?Not learned 490. Which list of clouds is in sequence, from highest to lowest in the sky?Not learned 491. 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 492. Which of the listed properties does warm air possess?Not learned 493. Little or no change in the barometric reading over a twelve hour period indicates __________.Not learned 494. You are located within a stationary high pressure area. Your aneroid barometer is falling very slowly. This indicates a(n) __________.Not learned 495. Which location is a source for an air mass labeled mTw?Not learned 496. You should log all barometer readings taken at sea __________.Not learned 497. A low HDOP (Horizontal Dilution of Precision) number such as 2 indicates a __________.Not learned 498. In low latitudes, the high(s) of the diurnal variation of pressure occur(s) at __________.Not learned 499. In low latitudes, the low(s) of the diurnal variation of pressure occur(s) at __________.Not learned 500. In low latitudes the range of the diurnal variation of pressure is up to __________.Not learned 501. When a low pressure area is approaching, the weather generally __________.Not learned 502. Low pressure disturbances, which travel along the intertropical convergence zone, are called __________.Not learned 503. Which is a low, uniform layer of cloud resembling fog, but not resting on the ground?Not learned 504. The lunar or tidal day is __________.Not learned 505. Magnets in the binnacles of magnetic compasses are used to reduce which effect?Not learned 506. What do the magnets placed in horizontal trays in the compass binnacle compensate for?Not learned 507. 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 508. If a magnetic compass is not affected by any magnetic field other than the Earth's, which statement is TRUE?Not learned 509. What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?Not learned 510. Which is TRUE concerning magnetic compass deviation?Not learned 511. 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 512. What is magnetic dip a measurement of?Not learned 513. At the magnetic equator there is no induced magnetism in the vertical soft iron because __________.Not learned 514. Magnetic information on a chart may be __________.Not learned 515. Magnetic variation changes with a change in __________.Not learned 516. Which term is given to magnetism which is present only when the material is under the influence of an external field?Not learned 517. Which is a major advantage of the NAVTEX system when compared to other systems?Not learned 518. A major advantage of the NAVTEX system when compared to other systems is that __________.Not learned 519. What is the major limitation in using the Sight Reduction Tables for Air Navigation Volume I (Pub. No. 249) for star sights?Not learned 520. In many areas "atoll" clouds (clouds of vertical development) are produced over small islands. What causes the development of these clouds?Not learned 521. How many characters does the short text messaging feature of the automatic identification system (AIS) allow for?Not learned 522. How many fixed objects are needed to plot a running fix?Not learned 523. How many high waters usually occur each day on the East Coast of the United States?Not learned 524. How many points are there in a compass card?Not learned 525. Mariners are FIRST warned of serious defects or important changes to aids to navigation by which means?Not learned 526. Which maritime radio system, consisting of a series of coast stations, transmits coastal warnings?Not learned 527. If you are the Master of a towing vessel who’s only working radar no longer functions, what must you do?Not learned 528. Which may cause above-normal tides near the center of a hurricane?Not learned 529. How may a spherical buoy be identified?Not learned 530. Mean high water is the average height of __________.Not learned 531. What is the reference datum mean high water used to measure?Not learned 532. Which measurement uses mean high water as the reference plane?Not learned 533. Which is TRUE of mean high water?Not learned 534. Mean low water is the average height of __________.Not learned 535. Mean lower low water is the reference plane used for which measurements?Not learned 536. 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 537. Which term is given to the mechanical lifting of air by the upslope slant of the terrain?Not learned 538. On a Mercator chart, 1 nautical mile is equal to __________.Not learned 539. Which type of projection is used to make a Mercator chart?Not learned 540. As a Merchant Marine Officer you are expected to be able to do which of the following?Not learned 541. 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 542. 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 543. Which meteorological feature controls the climate of the Gulf of Mexico and the coastal area during late spring and summer?Not learned 544. In a microbarograph, when should the pen be checked and the inkwell filled?Not learned 545. A microbarograph is a precision instrument that provides a __________.Not learned 546. A mid-channel buoy, if lighted, will show a __________.Not learned 547. A mid-channel buoy, may show which light?Not learned 548. In mid-ocean, the characteristics of a wave are determined by three factors. What is NOT one of these factors?Not learned 549. On mid-ocean waters, the height of a wind-generated wave is not affected by the __________.Not learned 550. A millibar is a unit of __________.Not learned 551. In modern fathometers, what produces the sonic or ultrasonic sound waves?Not learned 552. In modern fathometers the sonic or ultrasonic sound waves are produced electrically by means of a(n) __________.Not learned 553. When the Moon's declination is maximum north, which of the following will occur?Not learned 554. When the moon is at first quarter or third quarter phase, what type of tides will occur?Not learned 555. When the moon is new or full, which type of tides occur?Not learned 556. A mooring buoy, if lighted, shows which color light?Not learned 557. 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 558. The movement of water away from the shore or downstream is called a(n) __________.Not learned 559. What must the owner or Master do if any of the towing vessel's required navigational safety equipment fails during a voyage?Not learned 560. Which name is given to the pressure-sensitive element of an aneroid barometer?Not learned 561. The National Geospatial-Intelligence Agency (formerly the National Imagery and Mapping Agency) would produce a chart of the coast of which area?Not learned 562. What natural feature is responsible for the rather even climate found on the Florida peninsula throughout the year?Not learned 563. On a nautical chart, what does the inner ring of a compass rose indicate?Not learned 564. Naval Control of Shipping (NCS) publications should be __________.Not learned 565. Which Naval Control of Shipping publication should be aboard your vessel?Not learned 566. Which Naval Control of Shipping publication should be aboard your vessel?Not learned 567. A NAVAREA warning carries the following number: 1986/87 (11). Which statement is TRUE?Not learned 568. The navigable semicircle of a hurricane in the Northern Hemisphere is that area of the storm measured __________.Not learned 569. The navigable semicircle of a tropical storm in the South Indian Ocean is located on which side of the storm's track?Not learned 570. The navigable semicircle of a typhoon in the Southern Hemisphere is the area __________.Not learned 571. When navigating coastwise and hurricane warnings are received, you should __________.Not learned 572. You are navigating in pilotage waters using running fixes. The maximum time between fixes should be about __________.Not learned 573. When navigating using GPS, what is an indicator of the geometry of the satellites that your receiver is locked onto?Not learned 574. On navigational aids, what does the light characteristic "Fl(2+1)" mean?Not learned 575. Which navigational equipment is required to be tested and logged before a towing vessel embarks on a voyage of more than 24 hours?Not learned 576. Which navigational mark may only be lettered?Not learned 577. A navigator fixing a vessel's position by radar __________.Not learned 578. When do neap tides occur?Not learned 579. Neap tides occur when the __________.Not learned 580. When do neap tides occur?Not learned 581. The needle of an aneroid barometer points to 30.05 on the dial. What does this indicate?Not learned 582. 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 583. NOAA VHF weather reports are continuously broadcast on VHF channels WX-1, WX-2 and WX-3 on a frequency of __________.Not learned 584. Above-normal tides near the center of a hurricane may be caused by the __________.Not learned 585. In North America, which direction do the majority of the weather systems move?Not learned 586. A "Norther" in the Gulf of Mexico is __________.Not learned 587. In the Northern Hemisphere, an area of counterclockwise wind circulation surrounded by higher pressure is a __________.Not learned 588. 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 589. 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 590. In the Northern Hemisphere, where will the largest waves or swells created by a typhoon or hurricane be located?Not learned 591. In the Northern Hemisphere, an observer at point II in illustration D014NG below, should experience a wind shift from what direction?Not learned 592. In the Northern Hemisphere, the right half of the storm is known as the dangerous semicircle. Which statement(s) is/are TRUE?Not learned 593. In the Northern hemisphere which semicircle of a hurricane is the navigable semicircle?Not learned 594. In the Northern Hemisphere, swells that have outrun the storm are produced in which location?Not learned 595. 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 596. 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 597. In the Northern Hemisphere, what type of cloud formations would you expect to see to the west of an approaching tropical wave?Not learned 598. 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 599. 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 600. In the Northern Hemisphere, what do winds veering sharply to the west or northwest with increasing speed indicate?Not learned 601. What do the numbers on isobars indicate?Not learned 602. A nun buoy will __________.Not learned 603. If you observe a buoy off station which action should you take?Not learned 604. If you observe a rapid fall of barometric pressure, which action should you take?Not learned 605. 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 606. When observing a rapid rise in barometric pressure, what may you expect?Not learned 607. How is an occluded front represented on a weather map?Not learned 608. Which is TRUE of an occulting light?Not learned 609. What occurs when rising air cools to the dew point?Not learned 610. 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 611. Ocean swells originating from a typhoon can move ahead of it at speeds near __________.Not learned 612. Which is one of the advantages of a vessel utilizing a NAVTEX unit to receive MSI?Not learned 613. One point of a compass is equal to how many degrees?Not learned 614. When operated over a muddy bottom, a fathometer may indicate which of the following?Not learned 615. On what does the operation of an aneroid barometer depend?Not learned 616. An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol?Not learned 617. An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol?Not learned 618. An orange and white buoy marking a danger area will have what symbol on it?Not learned 619. An orange and white buoy with a rectangle on it displays what information?Not learned 620. In order to insure that the racon signal is visible on your 3 cm radar, the __________.Not learned 621. You are outbound in a buoyed channel on course 015°T. You sight a white light showing a MorseNot learned 622. When outbound from a U.S. port, what does a buoy displaying a flashing red light indicate?Not learned 623. When the owner or Master inspects his/her towing vessel before embarking on a voyage of more than 24 hours, he/she must check all terminal gear EXCEPT __________.Not learned 624. The owner or Master of a towing vessel that is operating within a Vessel Traffic Service (VTS) area must report specific information to the service. Which of the following choices is not required to be reported?Not learned 625. The owner or Master of a towing vessel shall ensure that all tests and inspections of gear take place. When are these actions required to be logged?Not learned 626. The owner or Master of a towing vessel shall ensure that all tests and inspections of gear take place and are logged __________.Not learned 627. 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 628. The passing of a low pressure system can be determined by periodically checking the __________.Not learned 629. Which term defines the paths of intended travel between three or more points?Not learned 630. 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 631. When is the peak of the hurricane season in the western North Pacific?Not learned 632. Which refers to the period at high or low tide during which there is no change in the height of the water?Not learned 633. What does the period of a lighted aid to navigation refer to?Not learned 634. The period of a lighted aid to navigation refers to the __________.Not learned 635. Permanent magnetism is caused by __________.Not learned 636. The permanent magnetism of a vessel may change in polarity due to __________.Not learned 637. The permanent magnetism of a vessel may change in strength due to __________.Not learned 638. The permanent magnetism of a vessel may change in strength due to __________.Not learned 639. A phenomenon where the atmospheric pressure is higher than that of other surrounding regions is called __________.Not learned 640. Which piece of navigational safety equipment is NOT required on towing vessels over 12 meters in length, provided that the vessel remains within the navigable waters of the U.S.?Not learned 641. Plain language is usually used on marine weather __________.Not learned 642. You should plot your dead reckoning position __________.Not learned 643. You should plot a dead reckoning position after every __________.Not learned 644. You plot a fix using three lines of position and find they intersect in a triangle. The actual position of the vessel __________.Not learned 645. 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 646. 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 647. 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 648. The points on the earth's surface where the magnetic dip is 90° are __________.Not learned 649. Which term is used to define the point where the vertical rise or fall of tide has stopped?Not learned 650. 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 651. Which position includes the effects of wind and current?Not learned 652. A position that is obtained by applying estimated current and wind to your vessel's course and speed is a(n) __________.Not learned 653. Which term is used for a position obtained by applying ONLY your vessel's course and speed to a known position?Not learned 654. 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 655. 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 656. When possible, a DR plot should always be started from where?Not learned 657. To predict the actual depth of water using the Tide Tables, how does one use the number obtained from the Tide Tables?Not learned 658. How do preferred channel buoys indicate the preferred channel to transit?Not learned 659. A preferred-channel buoy may be __________.Not learned 660. What does the prefix "nimbo" in a cloud's name mean?Not learned 661. The presence of stratus clouds and a dying wind will usually result in __________.Not learned 662. 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 663. The pressure gradient between the horse latitudes and doldrums runs __________.Not learned 664. Pressure gradient is a measure of __________.Not learned 665. What is the primary source of the earth's weather?Not learned 666. The principal advantage of NAVTEX radio warnings is that __________.Not learned 667. Prior to reading an aneroid barometer, why should you tap the face lightly with your finger?Not learned 668. The probability of a sudden wind may be foretold by __________.Not learned 669. 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 670. While proceeding downriver, you sight a red triangular-shaped daymark on the left bank. What does this daymark represent under the U.S. Aids to Navigation System on the Western Rivers?Not learned 671. "Proceeding from seaward" for the purpose of the direction of buoying offshore, lateral system buoys would be proceeding ________.Not learned 672. The process by which the temperature and/or moisture characteristics of an air mass changes is called __________.Not learned 673. 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 674. Which publication is NOT carried on board U.S. merchant vessels operating under Naval Control of Shipping?Not learned 675. Which publication should you check for complete information on Puget Sound weather conditions?Not learned 676. Which publication contains information on Naval Control of Shipping (NCS) in time of emergency or war?Not learned 677. Which publication contains information on Naval Cooperation and Guidance for Shipping (NCAGS) in time of emergency or war?Not learned 678. Which publication contains information on navigation regulations, landmarks, channels, anchorages, tides, currents, and clearances of bridges for Chesapeake Bay?Not learned 679. What publication contains information about the port facilities in Cadiz, Spain?Not learned 680. Which publication indicates the HYDROLANTS or HYDROPACS issued since the previous working day?Not learned 681. What publication has information on the climate, distances, navigation regulations, outstanding landmarks, channels and anchorages of Long Island Sound?Not learned 682. Which publication lists Class I and II private aids to navigation in or along navigable waters of the United States?Not learned 683. Which publication(s) must a towing vessel of 12 meters or more in length carry when operating on US waters other than the Western Rivers?Not learned 684. What is published by the U.S. Coast Guard?Not learned 685. What is the purpose of the "reference hand" on an aneroid barometer?Not learned 686. The purpose of the soft iron spheres mounted on arms on the binnacle is to compensate for __________.Not learned 687. 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 688. Which radar control reduces weak echoes out to a limited distance from the ship?Not learned 689. Which radar control shortens all echoes on the display and reduces clutter caused by rain or snow?Not learned 690. Which radar control is used to reduce sea return at close ranges?Not learned 691. Which term is given to a radar display which is oriented, so that north is always at the top of the screen?Not learned 692. 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 693. 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 694. Radar makes the most accurate determination of the __________.Not learned 695. A radar range to a small, charted object such as a light will provide a line of position in which form?Not learned 696. 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 697. Your radar is set on a true motion display. Which of the following will appear to move across the PPI scope?Not learned 698. A rapid rise or fall of the barometer indicates __________.Not learned 699. The recording fathometer produces a graphic record of the __________.Not learned 700. When recording the wind direction in the weather log, which information would you report?Not learned 701. Recurvature of a hurricane's track usually results in the forward speed __________.Not learned 702. What do red sectors of navigation lights warn mariners of?Not learned 703. Which is the reference datum used in determining the heights of land features on most charts?Not learned 704. With regard to GPS, a civilian receiver may be capable of achieving the same accuracy as a military receiver if __________.Not learned 705. 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 706. 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 707. In the relatively calm area near the hurricane center, the seas are __________.Not learned 708. When reporting wind direction, how should you give the direction?Not learned 709. With respect to automatic identification systems (AIS) which of the following information is broadcast every one to ten seconds?Not learned 710. With respect to automatic identification systems (AIS), which information is expected to be broadcast every 1 to 10 seconds?Not learned 711. With respect to automatic identification systems (AIS), which information is expected to be broadcast every 1 to 10 seconds?Not learned 712. With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?Not learned 713. With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?Not learned 714. With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?Not learned 715. With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.Not learned 716. With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.Not learned 717. With respect to a reversing current, when does slack water occur?Not learned 718. When is a revised print of a chart made?Not learned 719. The revision date of a chart is printed on which area of the chart?Not learned 720. The rise and fall of the ocean's surface due to a distant storm is known as __________.Not learned 721. 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 722. 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 723. On which route is a towing vessel over 39.4 feet in length NOT required to carry an echo-sounding device?Not learned 724. 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 725. 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 726. Safe water buoys may show ONLY which type of light?Not learned 727. A safe water mark may be __________.Not learned 728. How is a safe water mark, that can be passed close aboard on either side, painted and lighted?Not learned 729. You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow square painted on it. Which of the following is TRUE?Not learned 730. You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow triangle painted on it. Which statement is TRUE?Not learned 731. Scales on aneroid barometers are usually graduated in inches of mercury in the general range of __________.Not learned 732. Which is TRUE of a sea breeze?Not learned 733. A series of brief showers accompanied by strong, shifting winds may occur along or some distance ahead of a(n) __________.Not learned 734. The set of the current is the __________.Not learned 735. Set of the current is __________.Not learned 736. Severe tropical cyclones (hurricanes, typhoons) occur in all warm-water oceans except the __________.Not learned 737. 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 738. If a ship is proceeding towards the magnetic equator, the uncorrected deviation due to permanent magnetism __________.Not learned 739. 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 740. Your ship is returning to New Orleans from a foreign voyage and carrying a bulk cargo of anhydrous ammonia. Under what conditions must you must notify the Captain of the Port, New Orleans?Not learned 741. What does the shoreline on charts generally represent?Not learned 742. The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean __________.Not learned 743. 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 744. You sight a spar buoy with the topmark shown in illustration D027NG below. You must take which of the following actions?Not learned 745. A sign of thunderstorm development is a cumulus cloud __________.Not learned 746. How will the signal from a ramark show on the PPI?Not learned 747. A single barometric pressure reading of 28.60 indicates __________.Not learned 748. A single line of position combined with a dead-reckoning position results in a(n) __________.Not learned 749. A single vertical magnet placed underneath the compass in the binnacle is used to compensate for __________.Not learned 750. A sling psychrometer is a(n) __________.Not learned 751. What is a sling psychrometer used to measure?Not learned 752. What does a slow, gradual fall of the barometer indicate?Not learned 753. What does a slow rise in the barometric pressure forecast?Not learned 754. 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 755. Small, visible mound-like protuberances on the bottom of cumulonimbus clouds, that are potential breeding grounds for waterspouts and tornadoes, are called __________.Not learned 756. 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 757. In which source could you find the number of a chart for a certain geographic area?Not learned 758. In the Southern Hemisphere the wind circulation in a high pressure system rotates in which direction?Not learned 759. In the Southern Hemisphere winds in a low pressure system rotate in which direction?Not learned 760. A special mark (yellow buoy), if lighted, may exhibit which light rhythm?Not learned 761. A special purpose buoy shall be __________.Not learned 762. What is a "Special Warning"?Not learned 763. Which term is used to describe the speed at which an ocean wave system advances?Not learned 764. The speed of sound through ocean water is nearly always __________.Not learned 765. The speed of sound in water is approximately __________.Not learned 766. A spherical buoy may be __________.Not learned 767. 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 768. When do Spring tides occur?Not learned 769. Spring tides occur __________.Not learned 770. Which is TRUE concerning the occurrence of Spring tides?Not learned 771. Spring tides are tides that __________.Not learned 772. Squall lines with an almost unbroken line of threatening dark clouds and sharp changes in wind direction, generally precede which front?Not learned 773. "Stand" of the tide is that time when __________.Not learned 774. What is the standard atmospheric pressure as measured in inches of mercury?Not learned 775. What is the standard atmospheric pressure in millibars?Not learned 776. How does the standard magnetic compass heading differ from the true heading?Not learned 777. A star is observed at lower transit. The line of position derived from this sight is __________.Not learned 778. Which statement concerning current is TRUE?Not learned 779. Which statement concerning GPS is TRUE?Not learned 780. Which statement describes the prevailing wind direction in mid-winter in the Gulf Coast area?Not learned 781. Which statement about an estimated position is TRUE?Not learned 782. Which statement is FALSE concerning the dangerous semicircle of a hurricane?Not learned 783. Which statement about the Flinders bar of the magnetic compass is CORRECT?Not learned 784. Which statement about radio navigational warnings is TRUE?Not learned 785. Which statement is TRUE when comparing cold and warm fronts?Not learned 786. Which statement is TRUE concerning apogean tides?Not learned 787. Which statement is TRUE concerning the current of the Gulf Stream?Not learned 788. Which statement is TRUE concerning equatorial tides?Not learned 789. Which statement is TRUE concerning a Mercator projection?Not learned 790. Which statement is TRUE for an unlighted, red and green, horizontally-banded buoy with the topmost band red?Not learned 791. Which is TRUE concerning static crashes on your AM radio?Not learned 792. Steady precipitation is typical of __________.Not learned 793. Steam fog is most likely to occur on the Mississippi and Ohio Rivers in __________.Not learned 794. You sight an isolated danger buoy with a white flashing light showing a group of two flashes. The buoy indicates you should take which action?Not learned 795. 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 796. 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 797. You are steaming southward along the west coast of the United States when you encounter a buoy showing a flashing red light. Which is TRUE concerning the buoy?Not learned 798. 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 799. 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 800. What does a steep barometric gradient indicate?Not learned 801. The steepness of a cold front depends on __________.Not learned 802. 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 803. 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 804. 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 805. A storm's track is characterized by all of the following except __________.Not learned 806. Stormy weather is usually associated with regions of __________.Not learned 807. The strongest winds and heaviest rains in a hurricane are found in the __________Not learned 808. The survey information upon which a chart is based is found at which location?Not learned 809. A survey (special purpose mark) buoy __________.Not learned 810. Swells that have outrun the storm are produced in the __________.Not learned 811. Swell is the rise and fall of the ocean's surface due to __________.Not learned 812. 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 813. A sylphon cell is a part of which instrument?Not learned 814. Which of the symbols shown in illustration D018NG below represents an occluded front?Not learned 815. Which of the symbols shown in illustration D018NG below represents a warm front?Not learned 816. What does the symbol shown in illustration D033NG below indicate on a chart?Not learned 817. Which table is NOT found in the U.S. Coast Pilots?Not learned 818. You take a bearing of 043° and 169° of two objects. What bearing of a third object will give the best fix?Not learned 819. You take a bearing of 086° of a lighthouse. What bearing of another object would give the best fix?Not learned 820. You take a bearing of 086° of a lighthouse. Which bearing of another object would give the best fix?Not learned 821. You take a bearing of 142° and 259° of two objects. Which bearing of a third object will give the best fix?Not learned 822. You take a bearing of 176° of a lighthouse. What bearing of another object would give the best fix?Not learned 823. You take a bearing of 176° of a lighthouse. Which bearing of another object would give the best fix?Not learned 824. You take a bearing of 191° and 313° to two objects. Which bearing of a third object will give the best fix?Not learned 825. You take a bearing of 264° of a lighthouse. Which bearing of another object would give the best fix?Not learned 826. You take a bearing of 264° of a lighthouse. What bearing of another object would give the best fix?Not learned 827. You take a bearing of 313° and 076° of two objects. Which bearing of a third object will give the best fix?Not learned 828. 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 829. You take a bearing of 356° of a lighthouse. What bearing of another object would give the best fix?Not learned 830. You take a bearing of 356° of a lighthouse. Which bearing of another object would give the best fix?Not learned 831. 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 832. 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 833. 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 834. How does the temperature change with the passage of an occluded front?Not learned 835. Temperature and moisture characteristics are modified in a warm or cold air mass due to which factor?Not learned 836. The term "flood current" refers to that time when the water __________.Not learned 837. Which term is given to the dense black cumulonimbus clouds surrounding the eye of a hurricane?Not learned 838. Which term is given to a mature hurricane that has passed over colder water or land and loses its tropical characteristics?Not learned 839. Which term is given to the vertical angle between the horizontal and the magnetic line of force?Not learned 840. Which term refers to the direction a current is flowing?Not learned 841. What does the term "tide" refer to?Not learned 842. Which term is used to describe a generally circular low-pressure area?Not learned 843. The test of a towing vessel's steering gear control system includes each item EXCEPT __________.Not learned 844. Which theoretical minimum number of measurements from satellites does a GPS receiver need in order to provide an exact three-dimensional position?Not learned 845. Three or four feet of the total height of a storm surge in a hurricane can be attributed to __________.Not learned 846. Which is TRUE of the tides in Boston Harbor?Not learned 847. The time interval between successive wave crests is called the __________.Not learned 848. The time meridian that is used when computing the currents for Pensacola Bay, Florida, is __________.Not learned 849. Which time meridian is used when computing the velocity of the current for Pensacola Bay, Florida?Not learned 850. Which time meridian is used for tide computations in New York Harbor?Not learned 851. The time required for a lighted aid to complete a full cycle of light changes is listed in the Light List as the __________.Not learned 852. When a tornado moves over the water from land it is called a __________.Not learned 853. 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 854. Towing vessels of more than 39.4 feet in length must carry charts or maps __________.Not learned 855. Which towing vessel(s) is/are exempt from carrying radar?Not learned 856. A towing vessel is NOT required to be fitted with radar if it is __________.Not learned 857. A towing vessel is NOT required to be fitted with radar if it is __________.Not learned 858. 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 859. Tropical cyclones are classified by form and intensity. Which system does not have closed isobars?Not learned 860. Tropical cyclones do not form within 5° of the Equator because __________.Not learned 861. Tropical cyclones normally form within which of the following belts of latitude?Not learned 862. In a tropical cyclone, in the Northern Hemisphere, a vessel hove to with the wind shifting counterclockwise is located in which position?Not learned 863. Tropical storms and hurricanes are most likely to form in the Southern hemisphere during which months?Not learned 864. A tropical wave is usually preceded by __________.Not learned 865. A true bearing of a charted object, when plotted on a chart, will establish a __________.Not learned 866. What is NOT true concerning color sectors of lights?Not learned 867. Which is TRUE concerning Hot air?Not learned 868. Which is TRUE concerning the length of a wave?Not learned 869. What is TRUE concerning new editions of Light Lists?Not learned 870. Which is TRUE concerning the regions of the "horse latitudes"?Not learned 871. Which is TRUE of the direction of flow (channel) on the Corps of Engineer's Navigation Maps?Not learned 872. Which is TRUE of echo-sounders?Not learned 873. What is true about a front?Not learned 874. True heading differs from magnetic heading by __________.Not learned 875. What is TRUE of the history display of a target's past positions on an ARPA?Not learned 876. Which is TRUE when using the radar for navigation?Not learned 877. Which is TRUE of a vertically-striped buoy?Not learned 878. When trying to sight a lighthouse you notice a glare from a town in the background. How does this affect the range at which the light may be sighted?Not learned 879. A tsunami is caused by a(n) __________.Not learned 880. Two navigational hazards are located near to each other, but each is marked by an individual cardinal buoyage system. How are the buoys of one cardinal system identified from the other system?Not learned 881. Two well-developed high-pressure areas may be separated by which item?Not learned 882. Two well-developed low pressure areas may be separated by a __________.Not learned 883. Which type of cloud is among the most dependable for giving an indication of an approaching weather system?Not learned 884. What type of clouds are associated with a cold front?Not learned 885. Which type of cloud is the classic "thunderhead"?Not learned 886. Which type of cloud is composed entirely of ice crystals and is found at very high altitudes?Not learned 887. Which type of cloud formation should be of immediate concern to small craft operators?Not learned 888. From which type of cloud can a tornado or waterspout develop?Not learned 889. The type of current which will have the greatest effect on the course made good for your vessel is __________.Not learned 890. Which type of daymark is used to mark the starboard side of the channel when entering from sea?Not learned 891. Which type of front forms when a cold front overtakes and forces a warm front upwards?Not learned 892. Which type of frontal passage is associated with a relatively narrow band of precipitation?Not learned 893. Which type of GPS receiver has at least four channels to process information from several satellites simultaneously?Not learned 894. Which type of precipitation occurs only in thunderstorms with strong convection currents that convey raindrops above and below the freezing level?Not learned 895. Which type of precipitation is a product of the violent convection in thunderstorms?Not learned 896. Which type of weather could you expect soon after seeing "hook" or "comma" shaped cirrus clouds?Not learned 897. The typical operating range of automatic identification systems (AIS) at sea is nominally __________.Not learned 898. What is typical of warm front weather conditions?Not learned 899. What U.S. agency is responsible for NAVAREA warnings?Not learned 900. Under the U.S. Aids to Navigation System, which category is a yellow buoy?Not learned 901. In the U.S. Aids to Navigation System, lateral aids as seen entering from seaward will display lights with which characteristic?Not learned 902. In the U.S. Aids to Navigation System, what do red and green horizontally-banded buoys mark?Not learned 903. Under the U.S. Aids to Navigation System, a special mark possesses which of the following characteristics?Not learned 904. 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 905. In the U.S. Aids to Navigation System on the Western Rivers, the light characteristic of group flashing (2) is used for which purpose?Not learned 906. The U.S. Coast Guard publishes __________.Not learned 907. While underway, automatic identification systems (AIS) broadcast all of the following information every 1 to 10 seconds EXCEPT the __________.Not learned 908. 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 909. 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 910. 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 911. 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 912. 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 913. 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 914. 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 915. 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 916. 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 917. 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 918. 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 919. 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 920. 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 921. You are underway in the North Sea on course 216°T when you sight a buoy bearing 021° relative. Under the IALA Buoyage System, you are in the best navigable water if the buoy has which of the following characteristics?Not learned 922. 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 923. 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 924. Under the Uniform State Waterway Marking System how is a mooring buoy painted?Not learned 925. In the United States, who broadcasts the short-range radio navigational warnings?Not learned 926. In United States waters, a buoy having red and white vertical stripes if lighted, it will have which light characteristic?Not learned 927. When using an ARPA, what should you consider in order to evaluate the information displayed?Not learned 928. When using the ARPA in heavy rain, which action should you take?Not learned 929. When using an echo sounder in deep water, it is NOT unusual to encounter which situation?Not learned 930. When using GPS, how many theoretical position lines are required for a two-dimensional fix?Not learned 931. When using GPS without Selective Availability, what can you expect your horizontal accuracy to be of the unit?Not learned 932. 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 933. When using a radar in an unstabilized mode, fixes are determined most easily from __________.Not learned 934. 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 935. 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 936. Using the surface analysis in illustration D049NG below, what weather conditions would you expect to find at position A?Not learned 937. Using the surface analysis in illustration D049NG below, which wind speeds are reported at position A?Not learned 938. Using the surface analysis in illustration D049NG below, what wind speed is reported in position C?Not learned 939. The usual sequence of directions in which a tropical cyclone moves in the Southern Hemisphere is __________.Not learned 940. When utilizing a Pacific Coast chart, which is the reference plane of soundings?Not learned 941. The value of sixty nautical miles per degree of geodetic latitude is most correct at __________.Not learned 942. Variation is the angular measurement between which two points?Not learned 943. Variation is a compass error that you __________.Not learned 944. Variation is not constant; it is different with every change in __________.Not learned 945. How is variation indicated on a small-scale nautical chart?Not learned 946. 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 947. 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 948. Your vessel is located at position I on the weather map in illustration D013NG below. You should experience which weather condition?Not learned 949. Your 1600 GRT vessel will be entering the navigable waters of the United States. You are required by regulations to take which action?Not learned 950. 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 951. A vessel heading NW is on a course of __________.Not learned 952. 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 953. A vessel heading WNW is on which course?Not learned 954. 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 955. 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 956. When your vessel is on or near the path of an approaching tropical storm the __________.Not learned 957. 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 958. 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 959. 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 960. 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 961. 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 962. 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 963. 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 964. 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 965. 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 966. 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 967. 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 968. 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 969. 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 970. 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 971. A vessel's position should be plotted using bearings of __________.Not learned 972. If your vessel were proceeding upriver (ascending), how is the port side of the channel marked according to the U. S. Aids to Navigation System on the Western Rivers?Not learned 973. Vessels required to have an Automatic Radar Plotting Aid must have a device to indicate the __________.Not learned 974. Vessels required to have an Automatic Radar Plotting Aid must have a device to indicate which of the following?Not learned 975. When your vessel is on the storm track but behind the storm's center the __________.Not learned 976. How does visibility change after the passage of a cold front?Not learned 977. When a warm air mass is adjacent to a cold air mass, the separation line between the two is called a(n) __________.Not learned 978. A warm air mass is characterized by __________.Not learned 979. Warm air masses will generally have __________.Not learned 980. When a warm air mass overtakes a cold air mass, which term is given to the contact surface?Not learned 981. As a warm front approaches how does barometric pressure change?Not learned 982. In waters where the cardinal system is used where would you expect to find danger?Not learned 983. What weather change accompanies the passage of a cold front in the Northern Hemisphere?Not learned 984. Weather conditions in the middle latitudes generally move in which direction?Not learned 985. Weather forecast messages are usually __________.Not learned 986. When does a weather front exist?Not learned 987. Weather information is available from __________.Not learned 988. Weather information provided by the National Weather Service (NWS) advisories should be used along with which other source of information?Not learned 989. On a weather map, what does a large letter "H" indicate?Not learned 990. Weather observations provided by each weather station include all of the following except which item?Not learned 991. Weather patterns in the Gulf of Mexico area of the United States are _____.Not learned 992. In a weather report, which defines the term "visibility"?Not learned 993. Weather systems in the middle latitudes generally travel from __________.Not learned 994. Weather systems in the middle latitudes generally travel in which direction?Not learned 995. Which weather system produces strong cold winds called "Northers" during the winter months in the Gulf of Mexico?Not learned 996. Which is a weekly publication advising mariners of important matters affecting navigational safety?Not learned 997. What does a white buoy with a blue band signify?Not learned 998. What does a white buoy with an open-faced orange diamond on it indicate?Not learned 999. What does a white buoy with an orange circle marked on it indicate?Not learned 1000. What does a white buoy with an orange cross within a diamond marked on it indicate?Not learned 1001. What does a white buoy with an orange rectangle on it indicate?Not learned 1002. White lights may be found on which buoys?Not learned 1003. What do widely spaced isobars on a weather map indicate?Not learned 1004. Which winds have the greatest effect on the set, drift, and depth of the equatorial currents?Not learned 1005. The wind velocity is higher in the dangerous semicircle of a tropical cyclone because of the __________.Not learned 1006. 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 1007. 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 1008. 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 1009. If within 500 yards (460m) of a Northern Right Whale, you are lawfully obligated to take which actions?Not learned 1010. On a working copy of a weather map, a cold front is represented by what color line?Not learned 1011. On a working copy of a weather map what color is the line that represents a warm front?Not learned 1012. The world is divided into NAVAREAS for the dissemination of important marine information. Which NAVAREAS include the U.S. coasts?Not learned 1013. Where would you find information about the time of high tide at a specific location on a particular day of the year?Not learned 1014. Which would be the subject of a NAVAREA warning?Not learned 1015. Yellow lights may appear on which buoys?Not learned 1016. Which installed equipment on a towing vessel must be tested and logged when a new Master assumes command?Not learned 1017. Which statement(s) is/are TRUE concerning radio equipment on towing vessels of 26 feet or more in length?Not learned 1018. If the magnetic heading is greater than the compass heading, what direction is the deviation?Not learned 1019. What are the quadrantal spheres used for?Not learned 1020. What is the difference between magnetic heading and compass heading called?Not learned 1021. Under the IALA cardinal system, a mark with a quick light showing 9 flashes every 15 seconds indicates that the safest water is on which side of the mark?Not learned 1022. Which clouds is a thin, whitish, high cloud popularly known as "mares' tails"?Not learned 1023. 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 1024. Which type of current will have the greatest effect on the course made good for your vessel?Not learned 1025. You are running parallel to the coast and plotting running fixes using bearings of the same object. You are making more speed than assumed for the running fix. In relation to the position indicated by the fix you will be __________.Not learned 1026. How are cumulonimbus clouds formed?Not learned 1027. Which item in illustration D034NG below shows a fixed and flashing light?Not learned 1028. What will a buoy marking a wreck show?Not learned 1029. How is an occluded front represented on a weather map?Not learned 1030. When using GPS, how many theoretical position lines are required for a three-dimensional fix?Not learned 1031. The Light List indicates that a light has a nominal range of 20 miles and is 52 feet (16 meters) high. If the visibility is 20 miles and your height of eye is 20 feet (6 meters), at what approximate distance will you sight the light?Not learned 1032. 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 1033. 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