Q211 - Navigation General: Near Coastal, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. Which would influence a magnetic compass?Not learned 2. According to Buys Ballot's law, when an observer in the Northern Hemisphere experiences a northwest wind, where is the center of low pressure located?Not learned 3. How can the accuracy of an azimuth circle be checked?Not learned 4. 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 5. How are aids to navigation marking the intracoastal waterway (ICW) identified?Not learned 6. Aneroid barometers are usually calibrated to indicate atmospheric pressure in which units?Not learned 7. The apparent wind's speed can be zero, but only when two conditions are present. One condition is that the true __________.Not learned 8. The apparent wind is zero when which situation exists with the true wind?Not learned 9. You are approaching Chatham Strait from the south in foggy weather. You have Coronation Island and Hazy Islands on the radar. Suddenly the radar malfunctions. You then resort to using whistle echoes to determine your distance off Coronation Island. Your stopwatch reads 16.3 seconds for the echo to be heard. How far are you off Coronation Island?Not learned 10. 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 11. 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 12. 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 13. What is the approximate wave length of an X Band Radar operating on a frequency of approximately 9.5 GHz?Not learned 14. To avoid error, how should you read the scale of an aneroid barometer?Not learned 15. What is a barometric pressure reading of 29.92 inches of mercury is equivalent to?Not learned 16. Which Beaufort force indicates a wind speed of 65 knots?Not learned 17. The best estimate of the wind direction at sea level can be obtained from observing the direction of the __________.Not learned 18. Brief, violent showers frequently accompanied by thunder and lightning are usually associated with __________.Not learned 19. Buoys which mark dredging areas are painted which color?Not learned 20. How are buoys which mark isolated dangers painted?Not learned 21. Which buoy may be even numbered?Not learned 22. A buoy having red and green horizontal bands would have which light characteristic?Not learned 23. The buoy symbol printed on your chart is leaning to the northeast. What does this indicate?Not learned 24. 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 25. A cardinal mark showing an uninterrupted quick-flashing white light indicates the deepest water is located in which quadrant?Not learned 26. Which causes the Earth's irregular heating?Not learned 27. What causes variation in a compass?Not learned 28. Which causes the wind flow from the horse latitudes to the doldrums to be deflected?Not learned 29. What is a characteristic of cardinal marks?Not learned 30. Which of the following is a characteristic of a lighted cardinal mark?Not learned 31. What is the characteristic of a quick flashing light?Not learned 32. 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 33. How are chart legends which indicate a conspicuous landmark printed?Not learned 34. On charts of U.S. waters, a magenta marking is NOT used for marking a __________.Not learned 35. Which defines the term charted depth?Not learned 36. Which class of tide prevails in the greatest number of important harbors on the Atlantic Coast?Not learned 37. The climate of the eastern coast of the Gulf of Mexico __________.Not learned 38. Which cloud is described as a low, dark, sheet-like cloud which is associated with continuous precipitation for many hours?Not learned 39. What is the name of a cloud of marked vertical development (often anvil-shaped) and produces showers?Not learned 40. How are Coast Pilots and navigational charts kept corrected and up to date?Not learned 41. When cold air displaces warm air, you have which type of front?Not learned 42. What is a common unit of measure for atmospheric pressure?Not learned 43. Which condition indicates that you are in a hurricane's dangerous semicircle in the Northern hemisphere?Not learned 44. Which condition would most likely result in fog?Not learned 45. When considering currents, which defines the term set?Not learned 46. Which winds are consistent winds and blow from the horse latitudes to the doldrums?Not learned 47. By convention, what color is the south pole of a magnet painted?Not learned 48. In which country would you expect the channels to be marked with the IALA-B Buoyage System?Not learned 49. You are on course 030°T. The relative bearing of a lighthouse is 45°. What is the true bearing?Not learned 50. You are on course 277°T and take a relative bearing of a lighthouse of 045°. What is the true bearing to the lighthouse?Not learned 51. You are on course 344°T and take a relative bearing of a lighthouse of 090°. What is the true bearing to the lighthouse?Not learned 52. While on a course of 349°T, a light bears 13° on your starboard bow at a distance of 10.8 miles. What course should you steer to pass 2.5 miles abeam of the light, leaving it to starboard?Not learned 53. You are on course 355°T and take a relative bearing of a lighthouse of 275°. What is the true bearing of the lighthouse?Not learned 54. You are on course 357°T and take a relative bearing of a lighthouse of 180°. What is the true bearing to the lighthouse?Not learned 55. Cumulonimbus clouds are formed by __________.Not learned 56. When does a current perpendicular to a vessel's track have the greatest effect on the vessel's course made good?Not learned 57. In a cyclone, where is the lowest pressure found?Not learned 58. Which is the only cylindrical chart projection widely used for navigation?Not learned 59. The most dangerous form of icing encountered at sea is formed by which of the following?Not learned 60. Which data must ECDIS be able to record at one-minute intervals?Not learned 61. Where can information about the direction and velocity of rotary tidal currents be found?Not learned 62. The datum from which the predicted heights of tides are reckoned in the tide tables is __________.Not learned 63. Which datum is used for soundings on charts of the East Coast of the United States?Not learned 64. Which is TRUE of a dead reckoning (DR) plot?Not learned 65. Which defines a light's luminous range?Not learned 66. Which defines the term relative humidity?Not learned 67. Which defines a wave's fetch?Not learned 68. What describes an accurate position that is NOT based on any prior position?Not learned 69. The vertical distance from the tidal datum to the level of the water is the __________.Not learned 70. Which describes a diurnal tide?Not learned 71. Which is TRUE for the directive force acting on a gyrocompass?Not learned 72. What is the distance from the bottom of a wave trough to the top of a wave crest?Not learned 73. How are the doldrums characterized?Not learned 74. When does a Doppler speed log indicate speed over ground?Not learned 75. A Doppler speed log indicates speed through the water __________.Not learned 76. The dry bulb temperature is 78°F and the wet bulb temperature is 62°F. What is the relative humidity?Not learned 77. When a dual-purpose marking is used, how should the mariner following the Intracoastal Waterway be guided?Not learned 78. ECDIS must give an alarm for which of the following cases?Not learned 79. All echo-sounders can measure the __________.Not learned 80. What enables you to estimate the bearing of a storm's center?Not learned 81. 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 82. You are entering an east coast port and see a buoy with a yellow triangle painted on it. What does the symbol indicate?Not learned 83. When entering from seaward, what does a buoy displaying a single-flashing red light indicate?Not learned 84. Entering from seaward, what do triangular-shaped daymarks mark?Not learned 85. What does the expression "the air is saturated" mean?Not learned 86. You will find daily information about the duration of slack water in a port on the Atlantic Coast in which publication?Not learned 87. To find a magnetic compass course from a true course what must you apply?Not learned 88. What does the Flinders bar on a magnetic compass compensate for?Not learned 89. Fog forms when the air temperature is at or below __________.Not learned 90. Fog generally clears when the __________.Not learned 91. Which fog is produced by warm moist air passing over a cold surface?Not learned 92. How can you follow the approach of a dangerous cyclonic storm?Not learned 93. Which of the following is associated with consistently high barometric pressure?Not learned 94. Which of the following data layer categories is NOT displayed on ECDIS?Not learned 95. Which of the following describes the difference between true heading and magnetic heading?Not learned 96. Which of the following describes gyrocompass repeaters which reproduce the indications of the master gyrocompass?Not learned 97. Which of the following must the electronic chart of an ECDIS display, as required by IMO/IHO?Not learned 98. Which of the following is a standard correction applied to the reading of an aneroid barometer?Not learned 99. The four standard light colors used for lighted aids to navigation are red, green, white, and __________.Not learned 100. Freezing salt water spray should be anticipated when the air temperature drops below what temperature?Not learned 101. What is the function of a red triangular daymark?Not learned 102. A green buoy has a yellow triangle on it. What type of buoy is this?Not learned 103. Red lights may appear on which buoys?Not learned 104. If the gyrocompass error is east, what describes the error and the correction to be made to gyrocompass headings to obtain true headings?Not learned 105. 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 106. Which handheld instrument is used to measure distances between objects and the ship?Not learned 107. You are heading in a northerly direction when you come across an easterly current. Your vessel will respond in which manner?Not learned 108. The height of a wave is the vertical distance from which reference points?Not learned 109. As a high-pressure system approaches, which is TRUE concerning the barometer reading?Not learned 110. 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 111. The hurricane season in the North Atlantic Ocean reaches its peak during which month?Not learned 112. Under the IALA-B Buoyage System, which is TRUE of a buoy displaying a red light?Not learned 113. Under the IALA-B Buoyage System, when entering from seaward which lateral system buoy as shown in illustration D046NG below, should be left to port?Not learned 114. Under the IALA-A Buoyage System, when entering from seaward which buoy as shown in illustration D046NG below, should be left to starboard?Not learned 115. Under the IALA Buoyage Systems, which is TRUE of the topmark of a red and white vertically-striped buoy?Not learned 116. Under the IALA Buoyage Systems, which is TRUE of safe water marks?Not learned 117. In illustration D044NG below, what type of buoy is indicated by the letter A?Not learned 118. In illustration D045NG below, what two shapes shown are used to indicate a preferred channel?Not learned 119. In illustration D051NG below, why was the position labeled "E" plotted?Not learned 120. 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 121. You are inbound in a channel marked by a range. The range line is 040°T. You are steering 036°T. The range is in sight as shown in illustration D047NG below, and is closing. Which action should you take?Not learned 122. You are inbound in a channel marked by a range. The range line is 309°T. You are steering 306°T and have the range in sight as shown in illustration D047NG below. The range continues to open. What action should you take?Not learned 123. You are inbound in a channel marked by a range. The range line is 216°T. You are steering 213°T and have the range in sight as shown in illustration D048NG below. Which action should you take?Not learned 124. What is indicated when slanted letters are used to spell the name of a charted object?Not learned 125. What indicates that a tropical cyclone may be within 500 to 1,000 miles of your position?Not learned 126. By what means are indications of the master gyrocompass sent to remote repeaters?Not learned 127. Information about currents around Pacific Coast ports of the U.S. can be obtained in which publication?Not learned 128. Which information is found in the chart title?Not learned 129. Which information must automatic identification systems (AIS) automatically provide to appropriately equipped shore stations, vessels and aircraft?Not learned 130. Which information does the outer ring of a compass rose on a nautical chart provide?Not learned 131. Information about the pilotage available at Miami harbor may best be obtained from which publication?Not learned 132. An instrument designed to maintain a continuous record of atmospheric pressure is a(n) __________.Not learned 133. Which item in illustration D034NG below shows a flashing light?Not learned 134. Which item in illustration D034NG below shows an occulting light?Not learned 135. The largest waves (heaviest chop) will usually develop where the wind blows __________.Not learned 136. What is the length of a nautical mile?Not learned 137. 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 138. When a light is first seen on the horizon it will disappear again if the height of eye is immediately lowered several feet. When the eye is raised to its former height the light will again be visible. Which term is given to this process?Not learned 139. The Light List indicates that a dayboard is a type TR-SY. Which action should you take?Not learned 140. 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 141. 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 142. 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 143. The light rhythm of MorseNot learned 144. Which would you expect to see on a lighted preferred-channel buoy?Not learned 145. What is a lighted safe water mark fitted with to aid in its identification?Not learned 146. Lines drawn through points on the Earth having the same atmospheric pressure are known by which term?Not learned 147. A line of position is __________.Not learned 148. A line of position formed by sighting two charted objects in line is called a(n) __________.Not learned 149. 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 150. Low pressure disturbances, which travel along the intertropical convergence zone, are called __________.Not learned 151. Magnets in the binnacles of magnetic compasses are used to reduce which effect?Not learned 152. What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?Not learned 153. Magnetic variation changes with a change in __________.Not learned 154. Which is the main factor that causes the deflection of the southeast trade winds?Not learned 155. To make sure of getting the full advantage of a favorable current, you should reach an entrance or strait at which time in relation to the predicted time of the favorable current?Not learned 156. How many characters does the short text messaging feature of the automatic identification system (AIS) allow for?Not learned 157. How many slack tidal currents usually occur each day on the east coast of the United States?Not learned 158. Which is TRUE of mean high water?Not learned 159. Mean lower low water is the reference plane used for which measurements?Not learned 160. 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 161. Which term is given to the mechanical lifting of air by the upslope slant of the terrain?Not learned 162. Which type of projection is used to make a Mercator chart?Not learned 163. In a microbarograph, when should the pen be checked and the inkwell filled?Not learned 164. In mid-ocean, the characteristics of a wave are determined by three factors. What is NOT one of these factors?Not learned 165. In modern fathometers, what produces the sonic or ultrasonic sound waves?Not learned 166. Which name is given to the pressure-sensitive element of an aneroid barometer?Not learned 167. What is the name of the region of high pressure extending around the Earth at about 35°N latitude?Not learned 168. The National Oceanic and Atmospheric Administration publishes which item?Not learned 169. What natural feature is responsible for the rather even climate found on the Florida peninsula throughout the year?Not learned 170. While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 2 1/2 seconds after the signal was sounded. What is the distance to the shore?Not learned 171. While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's foghorn 4 1/2 seconds after the signal was sounded. What is the distance to the shore?Not learned 172. You are navigating in pilotage waters using running fixes. What is the recommended maximum time interval to advance a terrestrial line of position in this circumstance?Not learned 173. On navigational aids, what does the light characteristic "Fl(2+1)" mean?Not learned 174. A navigator fixing a vessel's position by radar __________.Not learned 175. The needle of an aneroid barometer points to 30.05 on the dial. What does this indicate?Not learned 176. In North America, which direction do the majority of the weather systems move?Not learned 177. In the Northern Hemisphere, when the center of a high-pressure system is due east of your position, you can expect winds from which direction?Not learned 178. In the Northern Hemisphere, where will the largest waves or swells created by a typhoon or hurricane be located?Not learned 179. In the Northern Hemisphere, an observer at point II in illustration D014NG below, should experience a wind shift from what direction?Not learned 180. In the Northern Hemisphere, your vessel is believed to be in the direct path of a hurricane, and plenty of sea room is available. Which is the best course of action?Not learned 181. Which observation is NOT used in determining the wind direction?Not learned 182. If an observer in the Northern Hemisphere faces the surface wind, where is the center of low pressure located?Not learned 183. An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol?Not learned 184. An orange and white buoy with a rectangle on it displays what information?Not learned 185. When outbound from a U.S. port, what does a buoy displaying a flashing red light indicate?Not learned 186. 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 187. Which position includes the effects of wind and current?Not learned 188. A position that is obtained by applying estimated current and wind to your vessel's course and speed is a(n) __________.Not learned 189. 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 190. What is the primary source of the earth's weather?Not learned 191. Prior to reading an aneroid barometer, why should you tap the face lightly with your finger?Not learned 192. 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 193. Which publication contains information on Naval Cooperation and Guidance for Shipping (NCAGS) in time of emergency or war?Not learned 194. Which publication contains information on navigation regulations, landmarks, channels, anchorages, tides, currents, and clearances of bridges for Chesapeake Bay?Not learned 195. Which publication would describe the explosive anchorages in the ports on the east coast of the United States?Not learned 196. What is the purpose of the "reference hand" on an aneroid barometer?Not learned 197. Which radar control is used to reduce sea return at close ranges?Not learned 198. Which term is given to a radar display which is oriented, so that north is always at the top of the screen?Not learned 199. Radar makes the most accurate determination of the __________.Not learned 200. What is the reaction of a gyrocompass to an applied force known as?Not learned 201. With regard to GPS, a civilian receiver may be capable of achieving the same accuracy as a military receiver if __________.Not learned 202. 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 203. You have replaced the chart paper in the course recorder. Which statement is TRUE?Not learned 204. With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.Not learned 205. What results when warm moist air blows over a colder surface and is cooled below its dew point?Not learned 206. The revision date of a chart is printed on which area of the chart?Not learned 207. 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 208. Which is TRUE of a sea breeze?Not learned 209. 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 210. A ship is on course 195° at a speed of 15 knots. The apparent wind is from 40° on the port bow, speed 30 knots. What are the direction and speed of the true wind?Not learned 211. Your ship is proceeding on course 320°T at a speed of 25 knots. The apparent wind is from 30° off the starboard bow, speed 32 knots. What is the relative direction, true direction and speed of the true wind?Not learned 212. The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean __________.Not learned 213. 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 214. How will the signal from a ramark show on the PPI?Not learned 215. A single line of position combined with a dead-reckoning position results in a(n) __________.Not learned 216. In the Southern Hemisphere winds in a low pressure system rotate in which direction?Not learned 217. The spin axis of a gyroscope tends to remain fixed in space in the direction in which it is started. How does this gyroscope become north seeking so that it can be used as a compass?Not learned 218. What is the standard atmospheric pressure as measured in inches of mercury?Not learned 219. What is the standard atmospheric pressure in millibars?Not learned 220. Which statement about gyrocompass error is TRUE?Not learned 221. Which statement is TRUE concerning a Mercator projection?Not learned 222. You are steaming on a course of 246°T at 17 knots. At 2107 you observe a lighthouse bearing 207°T. At 2119 the lighthouse bears 179°T. What is your distance off at the second bearing?Not learned 223. You are steaming on a course of 327°T at 13 knots. At 0207 you observe a lighthouse bearing 020°T. At 0226 the lighthouse bears 042°T. What is your distance off at the second bearing?Not learned 224. You are steaming west in the South Atlantic in an extratropical cyclonic storm, and the wind is dead ahead. According to the law of Buys Ballot, where does the center of low pressure lie?Not learned 225. You are steering 143°T, and a light is picked up dead ahead at a distance of 18.2 miles at 2006. You change course to pass the light 5.5 miles off abeam to port. If you are making 14.5 knots, what is your ETA at a position 5.5 miles off the light?Not learned 226. The survey information upon which a chart is based is found at which location?Not learned 227. Swell is the rise and fall of the ocean's surface due to __________.Not learned 228. The symbol which appears beside a light on a chart reads "Gp Fl R (2) 10 sec 160 ft 19M". Which characteristic describes the light?Not learned 229. Which symbol represents a 2-fathom curve?Not learned 230. Which of the symbols shown in illustration D018NG below represents an occluded front?Not learned 231. What is a system of reservoirs and connecting tubes in a gyro compass called?Not learned 232. You take a bearing of 043° and 169° of two objects. What bearing of a third object will give the best fix?Not learned 233. You take a bearing of 086° of a lighthouse. Which bearing of another object would give the best fix?Not learned 234. You take a bearing of 142° and 259° of two objects. Which bearing of a third object will give the best fix?Not learned 235. You take a bearing of 176° of a lighthouse. What bearing of another object would give the best fix?Not learned 236. You take a bearing of 264° of a lighthouse. What bearing of another object would give the best fix?Not learned 237. 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 238. Which is TRUE as the temperature of an air mass decreases?Not learned 239. What does the term "tide" refer to?Not learned 240. Which term is used to describe the time interval between successive wave crests?Not learned 241. Which term is used to describe the wind speed and direction observed from a moving vessel?Not learned 242. Which theoretical minimum number of measurements from satellites does a GPS receiver need in order to provide an exact three-dimensional position?Not learned 243. Which topmark shown in illustration D023NG below identifies an isolated danger?Not learned 244. 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 245. In a tropical cyclone, in the Northern Hemisphere, a vessel hove to with the wind shifting counterclockwise is located in which position?Not learned 246. A tropical storm is a tropical cyclone that generates winds of which speed?Not learned 247. Which is TRUE of an aneroid barometer on a vessel?Not learned 248. Which is TRUE concerning air masses near the earth's surface?Not learned 249. Which is TRUE concerning the characteristics of a warm air mass?Not learned 250. Which is TRUE concerning compass error?Not learned 251. Which is TRUE concerning the flow of air around an anticyclone in the Southern Hemisphere?Not learned 252. Which is TRUE concerning weather information?Not learned 253. Which is TRUE of a preferred-channel buoy?Not learned 254. 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 255. What type of clouds are associated with a cold front?Not learned 256. Which type of cloud is composed entirely of ice crystals and is found at very high altitudes?Not learned 257. Which type of cloud is hail most likely to fall from?Not learned 258. The type of current which will have the greatest effect on the course made good for your vessel is __________.Not learned 259. Which type of daymark is used to mark the starboard side of the channel when entering from sea?Not learned 260. Which type of precipitation occurs only in thunderstorms with strong convection currents that convey raindrops above and below the freezing level?Not learned 261. Which type of weather could you expect soon after seeing "hook" or "comma" shaped cirrus clouds?Not learned 262. Under the U.S. Aids to Navigation System, which category is a yellow buoy?Not learned 263. On U.S. charts, how you can tell if a named feature such as a rock (i.e. Great Eastern Rock in Block Island Sound) is submerged?Not learned 264. 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 265. 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 266. 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 267. 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 268. 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 269. You are underway on course 328°T when you sight a buoy broad on your port bow. Which would indicate that you are in the best navigable water?Not learned 270. You are underway in a vessel with a draft of 7.0 feet (2.1 meters). The charted depth for your position is 9 fathoms. You compute the height of tide to be +3.0 feet (0.9 meters). You determine the depth of the water beneath your keel to be __________.Not learned 271. It is unlawful to approach within how many yards of a Northern Right Whale?Not learned 272. When using a buoy as an aid to navigation which of the following should be considered?Not learned 273. When utilizing a Pacific Coast chart, which is the reference plane of soundings?Not learned 274. What will a veering wind do?Not learned 275. The velocity of the apparent wind can be less than the true wind and from the same direction, if certain conditions are present. One condition is that the _________.Not learned 276. The velocity of the apparent wind can be more than the true wind, and come from the same direction, if certain conditions are present. One condition is that the __________.Not learned 277. 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 278. Your vessel is on course 093°T at 15 knots. At 1835 a light bears 136°T, and at 1857 the same light bears 170°T. What was your distance off the light at 1857?Not learned 279. Your vessel is on course 150°T, speed 17 knots. The apparent wind is from 40° off the starboard bow, speed 15 knots. What is the speed of the true wind?Not learned 280. Your vessel is on course 180°T speed 22 knots. The apparent wind is from 70° off the port bow, speed 20 knots. What are the true direction and speed of the wind?Not learned 281. Your vessel is on course 270°T, speed 10 knots. The apparent wind is from 10° off the port bow, speed 30 knots. From which direction is the true wind?Not learned 282. Your vessel is entering port when you change course and steady up on a range with the lights in line. After a few minutes you observe the range lights as shown in illustration D047NG below. How should your heading be altered?Not learned 283. 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 284. Vessels should maintain a sharp lookout, especially during December through March, when navigating the Northern Right Whale's only known calving grounds. Where are the calving grounds located?Not learned 285. 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 286. When your vessel is on or near the path of an approaching tropical storm the __________.Not learned 287. 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 288. 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 289. 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 290. Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 178°T, and the variation is 9°W. If the heading of your vessel at the time of the sighting is 180° per standard magnetic compass, what is the deviation?Not learned 291. Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 283°T, and the variation is 13°E. If the heading of your vessel at the time of the sighting is 278° per standard compass, what is the deviation?Not learned 292. Your vessel is underway on a course of 323.5°T at a speed of 16 knots. At 1945 a light bears 350°T. At 2010 the light bears 008.5°T. What will be your distance off when abeam of the light?Not learned 293. When a warm air mass overtakes a cold air mass, which term is given to the contact surface?Not learned 294. While on watch, you notice that the air temperature is dropping and is approaching the dew point. Which type of weather should be forecasted?Not learned 295. In waters where the cardinal system is used where would you expect to find danger?Not learned 296. Which weather element cannot be measured accurately while on board a moving vessel?Not learned 297. A weather forecast states that the wind will commence veering. In the Northern Hemisphere, what changes will occur?Not learned 298. In a weather report, which defines the term "visibility"?Not learned 299. Weather systems in the middle latitudes generally travel in which direction?Not learned 300. Which wind results from a land mass cooling more quickly at night than an adjacent water area?Not learned 301. 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 302. 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 303. On a working copy of a weather map, a cold front is represented by what color line?Not learned 304. Where would you expect to find climatological and meteorological tables for the Gulf Coast area?Not learned 305. Where would you find information about the time of high tide at a specific location on a particular day of the year?Not learned 306. You are steaming on a course of 208°T at 21 knots. At 2019 you observe a lighthouse bearing 129°T. At 2030 the lighthouse bears 103°T. What is your distance off at the second bearing?Not learned 307. Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 311°T, and the variation is 8°E. If the heading of your vessel at the time of the sighting is 305° per standard magnetic compass, what is the correct deviation?Not learned 308. Your vessel is proceeding down a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 229°T, and variation is 6°W. If the heading of your vessel at the time of the sighting is 232° per standard magnetic compass, what is the deviation?Not learned 309. Your vessel is steering 354°T at 14 knots. At 0317 a light bears 049°T, and at 0342 the same light bears 071°T. What will be your distance off abeam?Not learned 310. Which symbol represents a 10-fathom curve?Not learned 311. Which type of current will have the greatest effect on the course made good for your vessel?Not learned 312. How are cumulonimbus clouds formed?Not learned 313. Which item in illustration D034NG below shows a fixed and flashing light?Not learned 314. With regard to GPS, how can a civilian receiver may be capable of achieving the same accuracy as a military receiver?Not learned 315. Which instrument is designed to maintain a continuous record of atmospheric pressure?Not learned 316. The Light List shows that a navigational light has a nominal range of 17 miles and a height above water of 28 feet (8.5 meters). Your height of eye is 32 feet (9.8 meters) and the visibility is 11.0 miles. At what approximate range will you first sight the light?Not learned 317. The Light List indicates that a light has a nominal range of 14 miles and is 26 feet high. If the visibility is 14 miles and your height of eye is 20 feet, at which approximate distance will you sight the light?Not learned