Q171 - Navigation General: Near Coastal, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. As a vessel changes course to starboard, which is TRUE concerning the compass card in a magnetic compass?Not learned 2. Which would influence a magnetic compass?Not learned 3. 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 4. When adjusting a magnetic compass for error, which is TRUE concerning the deviation table?Not learned 4. 4.1.1.4C1-27) Your height of eye is 40 feet (12.2 meters). What is the approximate geographical distance at which Ambrose Light, NY, could be visible? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".Not learned 5. Advection fog is most commonly caused by __________.Not learned 6. Which agency publishes the Light Lists?Not learned 7. When is an air mass termed "warm"?Not learned 8. Which is TRUE of an alternating light?Not learned 9. You are at anchor in the anchorage at the entrance to Delaware Bay. You weigh anchor at 1445 DST (ZD +4) on 24 July 1983 and proceed northbound enroute to Philadelphia at a speed of 10 knots. Which of the following should you expect to experience?Not learned 10. Aneroid barometers are usually calibrated to indicate atmospheric pressure in which units?Not learned 11. 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 12. 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 13. On an Army Corps of Engineers navigation map, how is each mile A.H.P. on the Lower Mississippi River marked?Not learned 14. 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 15. Which are associated with Cumulonimbus clouds?Not learned 16. 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 17. What is the average speed of the movement of a hurricane following the recurvature of its track?Not learned 18. What is the average speed of movement of a hurricane prior to recurvature?Not learned 19. To avoid error, how should you read the scale of an aneroid barometer?Not learned 20. Barometer readings in weather reports are given in terms of pressure at which reference location?Not learned 21. Which Beaufort force indicates a wind speed of 65 knots?Not learned 22. Which defines the height of tide?Not learned 23. You are bound for Baltimore via Cape Henry on a 15 knot ship. If the flood at Chesapeake Bay entrance begins at 1800 EST (ZD +5), at what time would you depart from the Chesapeake Bay entrance to have the most favorable current?Not learned 24. Which of the buoys listed below could be used to mark an anchorage?Not learned 25. 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 26. The buoy symbol printed on your chart is leaning to the northeast. What does this indicate?Not learned 27. What causes permanent magnetism on a vessel?Not learned 28. When changing from a compass course to a true course, which should you apply?Not learned 29. 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 30. Which characteristics will a lighted buoy that is to be left to starboard, when entering a U.S. port from seaward have?Not learned 31. Which would be the characteristic of an occulting light?Not learned 32. 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 33. 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 34. 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 35. 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 36. 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 37. Which class of tide prevails in the greatest number of important harbors on the Atlantic Coast?Not learned 38. What do clear skies, with the exception of a few cumulus clouds indicate?Not learned 39. 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 40. The climate of the northern coast of the Gulf of Mexico is _________.Not learned 41. Which cloud commonly produces a halo about the Sun or Moon?Not learned 42. Which cloud is described as a low, dark, sheet-like cloud which is associated with continuous precipitation for many hours?Not learned 43. When would cloud formations be minimal?Not learned 44. What color lights do lighted information markers display?Not learned 45. What is the color scheme of navigational marks used for informational or regulatory purposes?Not learned 46. Where can complete information on weather broadcasts throughout the world be found?Not learned 47. Which condition(s) is(are) necessary for the formation of dew?Not learned 48. Which condition would most likely result in fog?Not learned 49. When considering currents, which defines the term set?Not learned 50. By convention, the Earth's south magnetic pole is which color?Not learned 51. Which corrector will compensate for the deviation which is maximum on intercardinal compass headings?Not learned 52. You are on course 079°T, speed 11.2 knots. At 0904 you see a daymark bearing 078°T at a range of 4.6. If you change course at 0910 to leave the daymark abeam to starboard at 0.5 mile, at what time will the daymark be abeam?Not learned 53. While on a course of 138°T, a light bears 14° on the starboard bow at a distance of 8.6 miles. What course should you steer to pass 3 miles abeam of the light leaving it to starboard?Not learned 54. While on a course of 159°T, a light bears 11° on the starboard bow at a distance of 10.6 miles. What course should you steer to pass 2 miles abeam of the light leaving it to starboard?Not learned 55. You are on course 251°pgc and 241° per magnetic compass, when you observe a range in line bearing 192°pgc. The chart indicates that the range is in line on a bearing of 194°T. The variation is 16°E. What is the deviation of the magnetic compass?Not learned 56. While on a course of 321°T, a light bears 7° on the starboard bow at a distance of 9.7 miles. What course should you steer to pass 3.5 miles abeam of the light leaving it to starboard?Not learned 57. While on a course of 349°T, a light bears 13° on the starboard bow at a distance of 10.8 miles. What course should you steer to pass 2.5 miles abeam of the light leaving it to starboard?Not learned 58. Where can information about the direction and velocity of rotary tidal currents be found?Not learned 59. When daylight savings time is kept, the times of tide and current calculations must be adjusted. How can this be accomplished?Not learned 60. Which daymark has no lateral significance?Not learned 61. A daymark used to indicate the safe water in a channel will have which of the shapes shown in illustration D045NG below?Not learned 62. Which defines an isotherm?Not learned 63. The range of tide is the __________.Not learned 64. The vertical distance from the tidal datum to the level of the water is the __________.Not learned 65. What describes a flood current?Not learned 66. Which describes the visible range marked on charts for lights?Not learned 67. You desire to make good a true course of 203°. The variation is 19°E, magnetic compass deviation is 2°W, and gyrocompass error is 1°E. A westerly wind produces a 3° leeway. What is the course to steer per standard magnetic compass to make the true course good?Not learned 68. Determine the duration of the first PM slack water on 3 March 1983, east of the Statue of Liberty, when the current is less than 0.1 knot.Not learned 69. Determine the height of the tide at 2045 EST (ZD +5) at Augusta, ME, on 8 March 1983.Not learned 70. The difference between the heights of low and high tide is the __________.Not learned 71. When does a Doppler speed log indicate speed over ground?Not learned 72. A Doppler speed log indicates speed through the water __________.Not learned 73. All echo-sounders can measure the __________.Not learned 74. When does the effects of priming of the tides occur?Not learned 75. What enables you to estimate the bearing of a storm's center?Not learned 76. 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 77. You will be entering the Mystic River in Connecticut. What is the current at the Highway Bridge at 1900 EST (ZD +5) on 24 January 1983?Not learned 78. How can you estimate the position of a tropical storm's center?Not learned 79. You will find daily information about the duration of slack water in a port on the Atlantic Coast in which publication?Not learned 80. To find the specific phase characteristic of a lighthouse on a sound of the United States you would use which reference?Not learned 81. What is the FIRST sign of the existence of a well-developed tropical cyclone?Not learned 82. Fog forms when the air temperature is at or below __________.Not learned 83. Fog generally clears when the __________.Not learned 84. Fog is likely to occur when there is little difference between the dew point and the __________.Not learned 85. How can you follow the approach of a dangerous cyclonic storm?Not learned 86. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 87. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 88. Which of the following is the most useful factor for predicting weather?Not learned 89. Which form of cloud, that is often known as "mackerel sky", is generally associated with fair weather?Not learned 90. Of the four light characteristics shown in illustration D019NG below which one does NOT represent a safe water mark of the IALA Buoyage System?Not learned 91. When is the greatest directive horizontal force exerted on the magnetic compass of a vessel?Not learned 92. Red lights may appear on which buoys?Not learned 93. What will be the height of tide at Gargathy Neck, VA, at 1800 DST (ZD +4), on 16 August 1983?Not learned 94. As a high-pressure system approaches, which is TRUE concerning the barometer reading?Not learned 95. Which system provides the highest level of commercial navigational accuracy?Not learned 96. A HYDROLANT warning would normally be sent for all of the following EXCEPT __________.Not learned 97. Under the IALA-B Buoyage System, which is TRUE of a buoy displaying a red light?Not learned 98. Under the IALA-B Buoyage System, when entering from seaward, a buoy that should be left to port will be which color?Not learned 99. Under the IALA-B Buoyage System, which is TRUE of a conical buoy?Not learned 100. In the IALA Buoyage System, what do buoys with alternating red and green horizontal bands indicate?Not learned 101. In the IALA Buoyage System, preferred-channel-to-port or preferred-channel-to-starboard buoys, which is TRUE when fitted with lights?Not learned 102. Under the IALA Buoyage System, which topmark shown in illustration D023NG below will be displayed on a safe watermark?Not learned 103. Under the IALA Buoyage Systems, which is TRUE of safe water marks?Not learned 104. In illustration D039NG below, which number indicates cirrus clouds?Not learned 105. In illustration D039NG below, what type of cloud is indicated by the number four?Not learned 106. In illustration D045NG below, which shape is a daymark warning of danger?Not learned 107. What is the MOST important feature of the material used for making the binnacle of a standard magnetic compass?Not learned 108. What is indicated when slanted letters are used to spell the name of a charted object?Not learned 109. What indicates the arrival of a hurricane within 24 to 36 hours?Not learned 110. What indicates a buoy that should be left to port when entering from seaward? (U.S. Aids to Navigation System)Not learned 111. Which information must automatic identification systems (AIS) automatically provide to appropriately equipped shore stations, vessels and aircraft?Not learned 112. Which of the sources contains information on Northern Right Whales?Not learned 113. You have been informed that dredging operations may be underway in your vicinity. Which buoy indicates the dredging area?Not learned 114. How is the intensity of a light expressed in the Light Lists?Not learned 115. Isobars on a weather map are useful in predicting which element of the weather?Not learned 116. Which item in illustration D034NG below shows a MorseNot learned 117. Which item in illustration D034NG below shows an occulting light?Not learned 118. Which kind of conditions would you observe as the eye of a storm passes over your vessel's position?Not learned 119. What kind of pressure systems travel in tropical waves?Not learned 120. Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?Not learned 121. 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 122. The Light List indicates that a light has a nominal range of 10 miles and is 11 feet high. If the visibility is 15 miles and your height of eye is 20 feet, at what approximate distance will you sight the light?Not learned 123. The Light List shows a lighted aid to navigation on the left bank. This means that the light can be seen on the port side of a vessel under which condition?Not learned 124. 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 125. What is the name given to lines on a chart which connect points of equal magnetic variation?Not learned 126. Which line connects the points of zero magnetic dip?Not learned 127. 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 128. At which location is the value of sixty nautical miles per degree of geodetic latitude most correct?Not learned 129. Which is a low, uniform layer of cloud resembling fog, but not resting on the ground?Not learned 130. Magnetic variation changes with a change in __________.Not learned 131. 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 132. How many characters does the short text messaging feature of the automatic identification system (AIS) allow for?Not learned 133. How many high waters usually occur each day on the East Coast of the United States?Not learned 134. How many slack tidal currents usually occur each day on the east coast of the United States?Not learned 135. Which maritime radio system, consisting of a series of coast stations, transmits coastal warnings?Not learned 136. How may a spherical buoy be identified?Not learned 137. What is the reference datum mean high water used to measure?Not learned 138. Which term is given to the mechanical lifting of air by the upslope slant of the terrain?Not learned 139. Which meteorological feature controls the climate of the Gulf of Mexico and the coastal area during late spring and summer?Not learned 140. A mid-channel buoy, may show which light?Not learned 141. In mid-ocean, the characteristics of a wave are determined by three factors. What is NOT one of these factors?Not learned 142. When the Moon's declination is maximum north, which of the following will occur?Not learned 143. The National Geospatial-Intelligence Agency (formerly the National Imagery and Mapping Agency) would produce a chart of the coast of which area?Not learned 144. The National Oceanic and Atmospheric Administration publishes which item?Not learned 145. What natural feature is responsible for the rather even climate found on the Florida peninsula throughout the year?Not learned 146. On a nautical chart, what does the inner ring of a compass rose indicate?Not learned 147. Which navigational mark may only be lettered?Not learned 148. When do neap tides occur?Not learned 149. The needle of an aneroid barometer points to 30.05 on the dial. What does this indicate?Not learned 150. What do the numbers on isobars indicate?Not learned 151. If you observe a rapid fall of barometric pressure, which action should you take?Not learned 152. When observing a rapid rise in barometric pressure, what may you expect?Not learned 153. Which is TRUE of an occulting light?Not learned 154. When operated over a muddy bottom, a fathometer may indicate which of the following?Not learned 155. An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol?Not learned 156. Which organization operates the Maritime Differential GPS (DGPS)?Not learned 157. Which refers to the period at high or low tide during which there is no change in the height of the water?Not learned 158. What does the period of a lighted aid to navigation refer to?Not learned 159. You are planning to enter an unfamiliar U.S. port. Which publication provides information about channel depths, dangers, obstructions, anchorages, and marine facilities available in that port?Not learned 160. The predicted time that the flood begins at the entrance to Delaware Bay is 1526. You are anchored off Chestnut St. in Philadelphia. If you get underway bound for sea at 1300 and turn for 13 knots, at what point will you lose the flood current?Not learned 161. What does the prefix "nimbo" in a cloud's name mean?Not learned 162. Pressure gradient is a measure of __________.Not learned 163. What is the primary source of the earth's weather?Not learned 164. Prior to reading an aneroid barometer, why should you tap the face lightly with your finger?Not learned 165. What is the proper name given to the movement of water away from the shore or downstream?Not learned 166. Which publication should you check for complete information on Puget Sound weather conditions?Not learned 167. What publication has information on the climate, distances, navigation regulations, outstanding landmarks, channels and anchorages of Long Island Sound?Not learned 168. Which publication lists Class I and II private aids to navigation in or along navigable waters of the United States?Not learned 169. What is published by the U.S. Coast Guard?Not learned 170. When recording the wind direction in the weather log, which information would you report?Not learned 171. What do red sectors of navigation lights warn mariners of?Not learned 172. 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 173. With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.Not learned 174. With respect to a reversing current, when does slack water occur?Not learned 175. When is a revised print of a chart made?Not learned 176. 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 177. How is a safe water mark, that can be passed close aboard on either side, painted and lighted?Not learned 178. You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow square painted on it. Which statement is TRUE?Not learned 179. 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 180. You sight a spar buoy with the topmark shown in illustration D027NG below. You must take which of the following actions?Not learned 181. What is a sling psychrometer used to measure?Not learned 182. What do the soft iron spheres mounted on arms on the binnacle compensate for?Not learned 183. In which source could you find the vertical clearance of a bridge on the Ohio River?Not learned 184. When do Spring tides occur?Not learned 185. What is the standard atmospheric pressure as measured in inches of mercury?Not learned 186. What is the standard atmospheric pressure in millibars?Not learned 187. Which statement concerning GPS is TRUE?Not learned 188. 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 189. 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 190. Which symbol represents a 2-fathom curve?Not learned 191. Which is TRUE as the temperature of the air reaches the dew point?Not learned 192. Which is TRUE as the temperature for a given mass of air increases?Not learned 193. Which term is given to the dense black cumulonimbus clouds surrounding the eye of a hurricane?Not learned 194. Which is the term given to the time required for a lighted aid to complete a full cycle of light changes?Not learned 195. Which term is given to a tornado that moves out over the water from land?Not learned 196. Which term refers to the direction a current is flowing?Not learned 197. Which term is used to describe the small differences between the heights of two successive high tides or two low tides, in a tidal day?Not learned 198. At what time after 1400 EST (ZD +5), on 4 January 1983, will the height of the tide at Port Wentworth, GA, be 3.0 feet?Not learned 199. Which time meridian is used when computing the velocity of the current for Pensacola Bay, Florida?Not learned 200. Which is TRUE concerning compass error?Not learned 201. Which is TRUE concerning weather information?Not learned 202. The true course from point A to point B is 317°. A SSW wind causes a 4° leeway, variation is 6°W and deviation is 1°E. What is the magnetic compass course to steer to make good the true course?Not learned 203. Which is TRUE of echo-sounders?Not learned 204. Which is TRUE of a nun buoy in the IALA Region B system of buoyage?Not learned 205. Which is TRUE of a special mark?Not learned 206. Which is TRUE of a vertically-striped buoy?Not learned 207. Which type of cloud is among the most dependable for giving an indication of an approaching weather system?Not learned 208. Which type of cloud is the classic "thunderhead"?Not learned 209. From which type of cloud can a tornado or waterspout develop?Not learned 210. Which type of daymark is used to mark the starboard side of the channel when entering from sea?Not learned 211. Which type of GPS receiver has at least four channels to process information from several satellites simultaneously?Not learned 212. Which type of precipitation occurs only in thunderstorms with strong convection currents that convey raindrops above and below the freezing level?Not learned 213. What U.S. agency is responsible for NAVAREA warnings?Not learned 214. 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 215. Under the U.S. Aids to Navigation System on the Western Rivers, which describes the daymarks on the right descending bank?Not learned 216. Under the U.S. Aids to Navigation System on the Western Rivers, which is TRUE of a preferred channel buoy?Not learned 217. You are underway on course 000°T at 9.5 knots. The current is 082°T at 1.1 knots. What is the course being made good?Not learned 218. You are underway on course 160°T at 10 knots. The current is 210°T at 0.9 knots. What is the course made good?Not learned 219. You are underway on course 215°T at 12 knots. The current is 000°T at 2.3 knots. What is the course made good?Not learned 220. It is unlawful to approach within how many yards of a Northern Right Whale?Not learned 221. While upbound through Memphis, the weather report on the TV news indicates that a cold front will cross western Kentucky and Tennessee the next morning. What weather should accompany this front?Not learned 222. When using GPS, how many theoretical position lines are required for a two-dimensional fix?Not learned 223. 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 224. What will be the velocity of the tidal current 1.0 mile southwest of Lewis Pt., RI, at 1501 EST (ZD +5) on 4 April 1983?Not learned 225. What will be the velocity of the tidal current south of Doubling Point, ME, at 1357 EST (ZD +5) on 3 April 1983?Not learned 226. 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 227. Your vessel is on a course of 221°T at 15 knots. At 0319 a light bears 198.5°T, and at 0353 the light bears 176°T. At what time and distance off will your vessel be when abeam of the light?Not learned 228. 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 229. Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 014°T, and the variation is 11°E. If the heading of your vessel at the time of the sighting is 009° per standard magnetic compass, what is the correct deviation?Not learned 230. 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 196°T, and the variation is 7°E. If the heading of your vessel at the time of the sighting is 192° per standard magnetic compass, what is the deviation?Not learned 231. 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 093°T, and the variation is 6°E. If the heading of your vessel at the time of the sighting is 097° per standard magnetic compass, what is the correct deviation?Not learned 232. 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 233. Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 343°T, and the variation is 5° west. If the heading of your vessel at the time of the sighting is 344° per standard magnetic compass, what is the correct deviation?Not learned 234. Your vessel is steering course 027° per standard magnetic compass (psc), variation for the area is 19°W, and deviation is 2°E. The wind is from the north-northwest, producing a 5° leeway. What true course are you making good?Not learned 235. Your vessel is steering course 149°psc, variation for the area is 13°E, and deviation is 4°E. The wind is from the northeast, producing a 4° leeway. What true course are you making good?Not learned 236. Your vessel is steering course 166°psc, variation for the area is 8°W, and deviation is 3°W. The wind is from the west-southwest, producing a 2° leeway. What true course are you making good?Not learned 237. Your vessel is steering course 299°psc, variation for the area is 7°W, and deviation is 4°W. The wind is from the southwest, producing a 3° leeway. What true course are you making good?Not learned 238. Your vessel is steering a course of 337°psc. Variation for the area is 13°W, and deviation is 4°E. The wind is from the south, producing a 3° leeway. Which true course are you making good?Not learned 239. If your weather bulletin shows the center of a low-pressure area to be 100 miles due east of your position, what winds can you expect in the Northern Hemisphere?Not learned 240. Weather conditions in the middle latitudes generally move in which direction?Not learned 241. Weather information provided by the National Weather Service (NWS) advisories should be used along with which other source of information?Not learned 242. Weather warnings such as gale, storm and hurricane warnings are based on which criteria?Not learned 243. What does a white buoy with an orange rectangle on it indicate?Not learned 244. What wind reverses directions seasonally?Not learned 245. You wish to make good a course of 300°T while turning for an engine speed of 11 knots. The set is 350°T, and the drift is 2.1 knots. Which course should you steer?Not learned 246. If within 500 yards (460m) of a Northern Right Whale, you are lawfully obligated to take which actions?Not learned 247. On 23 March 1983, at Kingston Point, NY, what is the earliest time after 1700 EST (ZD +5) that the predicted tide will be +2.0 feet?Not learned 248. You desire to make good a true course of 038°. The variation is 5°E, magnetic compass deviation is 4°W, and gyrocompass error is 4°W. A southeasterly wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?Not learned 249. (5.9.2.3-11) What will be the time after 1000 EST (ZD +5), on 4 March 1983, that the height of the tide at City Island, NY, will be 2.4 feet?Not learned 250. What will be the time of maximum flood current at Sagamore Bridge on the Cape Cod Canal during the morning of 6 December 1983 (ZD +5)?Not learned 251. Two beacons form a range in the direction of 221.5°T. The range is seen in line from your vessel bearing 223° per gyrocompass. The variation in the area is 4°E. What is the error of your gyrocompass?Not learned 252. What will be the velocity of the tidal current at Port Royal, VA, at 1505 DST (ZD +4) on 4 June 1983?Not learned 253. Your vessel has a draft of 23 feet. On 23 June 1983 you wish to pass over a temporary obstruction near Beaufort, SC, that has a charted depth of 22 feet. Allowing for a safety margin of 3 feet, what is the earliest time after 1600 DST (ZD +4) that this passage can be made?Not learned 254. 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 255. 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 256. You want to transit Hell Gate, NY on 23 July 1983. What is the period of time around the AM (ZD +4) slack before ebb when the current will be less than 0.3 knot?Not learned 257. What is the difference between magnetic heading and compass heading called?Not learned 258. When entering a channel from seaward, which is TRUE concerning the numbers on buoys?Not learned 259. On 10 November 2023 at 2030, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). What is the direction and velocity of the current you are encountering as you pass Buoy “10”Not learned 260. On 14 October 2023, you will be docking at the Southern Branch Elizabeth River, VA at the first low tide. The berth is located between NOAA reference tidal station #8638660 and subordinate station #8639348. What time (LST) will you be dockingNot learned 261. On 14 October 2023, you will be docking at the Southern Branch Elizabeth River, VA at the second low tide. The berth is located between NOAA reference tidal station #8638660 and subordinate station #8639348. What time (LST) will you be dockingNot learned 262. On 9 November 2023 at 1630, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). What is the direction and velocity of the current you are encountering as you pass Buoy “10”Not learned 263. Which symbol represents a 20-fathom curve?Not learned 264. The Light List shows a lighted aid to navigation on the left bank. This means that the light can be seen on the starboard side of a vessel under which circumstances?Not learned 265. According to Buys Ballot's law, when an observer in the Northern Hemisphere experiences a northeast wind, where is the center of low pressure located?Not learned 266. When using GPS, how many theoretical position lines are required for a three-dimensional fix?Not learned 267. 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 268. The luminous range of a light takes into account which factor?Not learned 269. The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen __________.Not learned