Q162 - Navigation General: Near Coastal, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. Which would influence a magnetic compass?Not learned 2. 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 3. At 2221 your course is 222°pgc at a speed of 11.2 knots, when radar detects a buoy bearing 355° relative, at a range of 5.8 miles. The gyro error is 2°E. If you change course at 2226, what course should you steer to leave the buoy 1.0 mile abeam to port?Not learned 4. 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 5. When adjusting a magnetic compass for error, which is TRUE concerning the deviation table?Not learned 6. What is an advantage of the magnetic compass aboard vessels?Not learned 7. Which agency publishes the Light Lists?Not learned 8. When is an air mass termed "warm"?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. 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 11. 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 12. What should you apply to a fathometer reading to determine the depth of water?Not learned 13. You are approaching the first of two drawbridges that span a narrow channel. The second drawbridge is close to the first. Which signals should you sound?Not learned 14. When approaching a lock and at a distance of not more than a mile, vessels desiring a single lockage shall sound which signal?Not learned 15. 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 16. Which is an area of strong westerly winds occurring between 40°S and 60°S latitude?Not learned 17. Which are associated with Cumulonimbus clouds?Not learned 18. Atmospheric pressure may be measured with a(n) __________.Not learned 19. Atmospheric pressure at sea level is equal to __________.Not learned 20. What is the average speed of movement of a hurricane prior to recurvature?Not learned 21. To avoid error, how should you read the scale of an aneroid barometer?Not learned 22. Barometer readings in weather reports are given in terms of pressure at which reference location?Not learned 23. What benefit is a weather bulletin to a mariner?Not learned 24. Brief, violent showers frequently accompanied by thunder and lightning are usually associated with __________.Not learned 25. Where are buoys and day beacons exhibiting a yellow triangle or square painted on them used?Not learned 26. How are buoys which mark isolated dangers painted?Not learned 27. Which buoy may be odd numbered?Not learned 28. 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 29. Which causes the Earth's irregular heating?Not learned 30. When changing from a compass course to a true course, which should you apply?Not learned 31. The channel under a bridge is marked with lights of the lateral system. The centerline of the channel shall be marked on the bridge in which manner?Not learned 32. 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 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. Charts should be corrected by using information published in which text?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. How are chart legends which indicate a conspicuous landmark printed?Not learned 37. What do chart legends printed in capital letters indicate about the associated landmark?Not learned 38. How is a chart with a natural scale of 1:160,000 classified?Not learned 39. A chart with a scale of 1:80,000 would fall into which category?Not learned 40. Which defines the term charted depth?Not learned 41. What do clear skies, with the exception of a few cumulus clouds indicate?Not learned 42. The climate of the northern coast of the Gulf of Mexico is _________.Not learned 43. Which cloud commonly produces a halo about the Sun or Moon?Not learned 44. 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 45. When would cloud formations be minimal?Not learned 46. How are Coast Pilots and navigational charts kept corrected and up to date?Not learned 47. What is the color scheme of navigational marks used for informational or regulatory purposes?Not learned 48. The compass rose on a nautical chart indicates both variation and which other information?Not learned 49. Which conditions should a vessel entering the eye of a hurricane expect?Not learned 50. Which condition would most likely result in fog?Not learned 51. What does not contribute to the commercial GPS receiver position error?Not learned 52. Which corrector will compensate for the deviation which is maximum on intercardinal compass headings?Not learned 53. If you count 20 seconds between seeing lightning and hearing the thunder, how far is the storm away from you?Not learned 54. 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 55. 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 56. 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 57. You are on course 344°T and take a relative bearing of a lighthouse of 270°. What is the true bearing to the lighthouse?Not learned 58. 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 59. Cumulonimbus clouds are formed by __________.Not learned 60. When does a current perpendicular to a vessel's track have the greatest effect on the vessel's course made good?Not learned 61. Which current is responsible for the movement of large quantities of ice into the North Atlantic shipping lanes?Not learned 62. If the current and wind are in the same direction, what does the sea surface represent concern the true wind speed?Not learned 63. 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 64. Which defines an isotherm?Not learned 65. Which defines a light's luminous range?Not learned 66. The vertical distance from the tidal datum to the level of the water is the __________.Not learned 67. Which describes a line of position derived by radar range from an identified point on a coast?Not learned 68. Which is TRUE concerning privately maintained aids to navigation included in the Light List?Not learned 69. Which describes the visible range marked on charts for lights?Not learned 70. 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 71. 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 72. Deviation in a compass is caused by which of the following?Not learned 73. The direction in which a vessel is steered is the course. The path actually followed is the __________.Not learned 74. The direction in which a vessel should be steered between two points is known by which term?Not learned 75. 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 76. A drawbridge may use visual signals to acknowledge a vessel's request to open the draw. Which signal indicates that the draw will NOT be opened immediately?Not learned 77. When drawing a weather map and an isobar crosses a front, the isobar is drawn __________.Not learned 78. All echo-sounders can measure the __________.Not learned 79. An electronic depth finder operates on which principle?Not learned 80. 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 81. You are entering port and have been instructed to anchor, as your berth is not yet available. You are on a SW'ly heading, preparing to drop anchor, when you observe the range lights as shown in illustration D047NG below, on your starboard beam. What action should you take?Not learned 82. 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 83. When entering from seaward, what does a buoy displaying a single-flashing red light indicate?Not learned 84. You will find daily information about the duration of slack water in a port on the Atlantic Coast in which publication?Not learned 85. To find a magnetic compass course from a true course what must you apply?Not learned 86. To find the specific phase characteristic of a lighthouse on a sound of the United States you would use which reference?Not learned 87. Which can you use to indicate the bearing of the center of a hurricane or tropical storm?Not learned 88. Fog generally clears when the __________.Not learned 89. How can you follow the approach of a dangerous cyclonic storm?Not learned 90. Which of the following is a boundary between two air masses?Not learned 91. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 92. Which of the following statements is TRUE regarding automatic identification systems (AIS)?Not learned 93. Which of the following is the most useful factor for predicting weather?Not learned 94. 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 95. The four standard light colors used for lighted aids to navigation are red, green, white, and __________.Not learned 96. A general chart intended for coastwise navigation outside of outlying reefs can have which scale?Not learned 97. When is the greatest directive horizontal force exerted on the magnetic compass of a vessel?Not learned 98. Red lights may appear on which buoys?Not learned 99. You are heading in a northerly direction when you come across an easterly current. Your vessel will respond in which manner?Not learned 100. A hurricane is characterized by winds of which speed?Not learned 101. 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 102. The hurricane season in the North Atlantic Ocean reaches its peak during which month?Not learned 103. A hygrometer is a device used for determining __________.Not learned 104. Under the IALA-A and B Buoyage Systems, what does a buoy with alternating red and white vertical stripes indicate?Not learned 105. Under the IALA-B Buoyage System, which is TRUE of a conical buoy?Not learned 106. Under the IALA Buoyage Systems, a cardinal mark may NOT be used to __________.Not learned 107. In the IALA Buoyage System, preferred-channel-to-port or preferred-channel-to-starboard buoys, which is TRUE when fitted with lights?Not learned 108. Under the IALA Buoyage System, which topmark shown in illustration D023NG below will be displayed on a safe watermark?Not learned 109. In illustration D045NG below, which shape is a daymark warning of danger?Not learned 110. Which is the most important information to be obtained from a barometer?Not learned 111. An important lunar cycle affecting the tidal cycle is called the nodal period. How long is this cycle?Not learned 112. What is the most important source of information to be used in correcting charts and keeping them up to date?Not learned 113. 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 114. What is indicated when slanted letters are used to spell the name of a charted object?Not learned 115. Which indication on the barometer is most meaningful in forecasting weather?Not learned 116. Which of the sources contains information on Northern Right Whales?Not learned 117. Which information does the outer ring of a compass rose on a nautical chart provide?Not learned 118. Which item contains information about temporary, short-term changes affecting the safety of navigation in U.S. waters?Not learned 119. Where can information for updating paper nautical charts primarily be found?Not learned 120. How are you informed of defects or changes in aids to navigation?Not learned 121. How is the intensity of a light expressed in the Light Lists?Not learned 122. Isobars on a weather map are useful in predicting which element of the weather?Not learned 123. Which item in illustration D034NG below shows a MorseNot learned 124. Which kind of conditions would you observe as the eye of a storm passes over your vessel's position?Not learned 125. What kind of pressure systems travel in tropical waves?Not learned 126. Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?Not learned 127. 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 128. The Light List indicates that a dayboard is a type NB. You should __________.Not learned 129. 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 130. 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 131. What is the name given to lines on a chart which connect points of equal magnetic variation?Not learned 132. Which line connects the points of zero magnetic dip?Not learned 133. A line of position is __________.Not learned 134. 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 135. Which of the listed properties does warm air possess?Not learned 136. If the main channel under a bridge is marked with lights of the lateral system how are the adjacent bridge piers marked?Not learned 137. How may a spherical buoy be identified?Not learned 138. Which measurement uses mean high water as the reference plane?Not learned 139. Which is TRUE of mean high water?Not learned 140. Mean lower low water is the reference plane used for which measurements?Not learned 141. Which term is given to the mechanical lifting of air by the upslope slant of the terrain?Not learned 142. A mid-channel buoy, may show which light?Not learned 143. In mid-ocean, the characteristics of a wave are determined by three factors. What is NOT one of these factors?Not learned 144. On mid-ocean waters, the height of a wind-generated wave is not affected by the __________.Not learned 145. In which months will the North Equatorial Countercurrent be strongest?Not learned 146. When the moon is at first quarter or third quarter phase, what type of tides will occur?Not learned 147. What must change for the compass deviation to change?Not learned 148. The National Oceanic and Atmospheric Administration publishes which item?Not learned 149. Which nautical charts are intended for coastwise navigation outside of outlying reefs and shoals?Not learned 150. The needle of an aneroid barometer points to 30.05 on the dial. What does this indicate?Not learned 151. In North America, which direction do the majority of the weather systems move?Not learned 152. In the North Sea area, you sight a buoy with a quick light showing 3 flashes every 10 seconds. Which topmark in illustration D030NG below would be fitted to this buoy under the IALA Buoyage Systems?Not learned 153. 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 154. How can Northern right whales can be identified?Not learned 155. If you observe a rapid fall of barometric pressure, which action should you take?Not learned 156. If an observer in the Northern Hemisphere faces the surface wind, where is the center of low pressure located?Not learned 157. When observing a rapid rise in barometric pressure, what may you expect?Not learned 158. Which is TRUE of an occulting light?Not learned 159. An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol?Not learned 160. You are outbound in a buoyed channel on course 015°T. You sight a white light showing a MorseNot learned 161. When outbound from a U.S. port, what does a buoy displaying a flashing red light indicate?Not learned 162. Which refers to the period at high or low tide during which there is no change in the height of the water?Not learned 163. The permanent magnetism of a vessel may change in strength due to __________.Not learned 164. 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 165. 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 166. The points on the earth's surface where the magnetic dip is 90° are __________.Not learned 167. Which term is used to define the point where the vertical rise or fall of tide has stopped?Not learned 168. 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 169. When possible, a DR plot should always be started from where?Not learned 170. What does the prefix "nimbo" in a cloud's name mean?Not learned 171. What is the primary source of the earth's weather?Not learned 172. Which publication should you check for complete information on Puget Sound weather conditions?Not learned 173. What publication has information on the climate, distances, navigation regulations, outstanding landmarks, channels and anchorages of Long Island Sound?Not learned 174. Which publication lists Class I and II private aids to navigation in or along navigable waters of the United States?Not learned 175. Which publication would describe the explosive anchorages in the ports on the east coast of the United States?Not learned 176. A radar range to a small, charted object such as a light will provide a line of position in which form?Not learned 177. When recording the wind direction in the weather log, which information would you report?Not learned 178. A relative bearing is always measured from __________.Not learned 179. What is the relative bearing of an object on the port beam?Not learned 180. What is the relative bearing of an object broad on the starboard quarter?Not learned 181. You are required to enter a lock on your voyage. Information on the lock regulations, signals, and radio communications can be found in __________.Not learned 182. The rise and fall of the ocean's surface due to a distant storm is known as __________.Not learned 183. 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 184. Which scale is considered a harbor chart?Not learned 185. If several navigational lights are visible at the same time, each one may be positively identified by checking all of the following EXCEPT what against the Light List?Not learned 186. The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean __________.Not learned 187. What is a sling psychrometer used to measure?Not learned 188. Sometimes foreign charts are reproduced by NGA. On such a chart a wire dragged (swept) area may be shown in purple or which other color?Not learned 189. Which term is used to describe the speed at which an ocean wave system advances?Not learned 190. The speed of sound in water is approximately __________.Not learned 191. What is the standard atmospheric pressure as measured in inches of mercury?Not learned 192. What is the standard atmospheric pressure in millibars?Not learned 193. Which statement describes the prevailing wind direction in mid-winter in the Gulf Coast area?Not learned 194. Steam fog is most likely to occur on the Mississippi and Ohio Rivers in __________.Not learned 195. You are steaming on a course of 084°T at a speed of 13 knots. At 1919 a lighthouse bears 106.5°T. At 1957 the same lighthouse bears 129°T. What will be your distance off the lighthouse when abeam?Not learned 196. You are steaming on course 126°T at 14.8 knots. At 1022 you sight a buoy bearing 128°T, at a range of 4.8 miles. If you change course at 1026, what true course will you steer to leave the buoy 0.5 mile abeam to port?Not learned 197. While steaming on course 280°T, you sight a buoy showing a very quick flashing (VQ) white light well to port. Maintaining course, you sight another buoy showing a quick flashing (Q) white light. How should you pass?Not learned 198. 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 199. 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 200. What does a steep barometric gradient indicate?Not learned 201. 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 202. You are steering a magnetic compass course of 075°. The variation for the area is 10°W, and the compass deviation is 5°E. What is the true course you are steering?Not learned 203. When you are steering on a pair of range lights and find the upper light is in line above the lower light, you should take which action?Not learned 204. 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 205. Which wind is a strong, often violent, northerly wind occurring on the Pacific coast of Mexico, particularly during the colder months?Not learned 206. The symbol which appears beside a light on a chart reads "Gp Fl R (2) 10 sec 160 ft 19M". Which characteristic does the light possess?Not learned 207. You take a bearing of 176° of a lighthouse. Which bearing of another object would give the best fix?Not learned 208. Which is TRUE as the temperature of an air mass decreases?Not learned 209. Which term describes the temperature at which the air is saturated with water vapor and below which condensation of water vapor will occur?Not learned 210. Which is TRUE as the temperature for a given mass of air increases?Not learned 211. Which is the term given to the time required for a lighted aid to complete a full cycle of light changes?Not learned 212. Which term refers to the direction a current is flowing?Not learned 213. 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 214. Which term is used to describe the time interval between successive wave crests?Not learned 215. Which theoretical minimum number of measurements from satellites does a GPS receiver need in order to provide an exact three-dimensional position?Not learned 216. What do the three white lights in a vertical line on a multiple-span bridge indicate?Not learned 217. What will be the time after 0600 (ZD +3), on 6 March 1983, that the height of the tide at Puerto Rosales, Argentina, will be 9.0 feet (2.7 meters)?Not learned 218. Which topmark shown in illustration D023NG below identifies an isolated danger?Not learned 219. A tropical storm is a tropical cyclone that generates winds of which speed?Not learned 220. Which is TRUE of an aneroid barometer?Not learned 221. Which is TRUE concerning compass error?Not learned 222. Which is TRUE concerning a relative bearing?Not learned 223. 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 224. Which is TRUE of the velocity of the current in large coastal harbors?Not learned 225. Which is TRUE of a vertically-striped buoy?Not learned 226. Which type of cloud is the classic "thunderhead"?Not learned 227. Which type of cloud is composed entirely of ice crystals and is found at very high altitudes?Not learned 228. Which type of cloud formation should be of immediate concern to small craft operators?Not learned 229. Which type of GPS receiver has at least four channels to process information from several satellites simultaneously?Not learned 230. Under the U.S. Aids to Navigation System, which category is a yellow buoy?Not learned 231. Under the U.S. Aids to Navigation System, a special mark possesses which of the following characteristics?Not learned 232. 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 233. 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 234. Under the U.S. Aids to Navigation System on the Western Rivers, which describes the daymarks on the right descending bank?Not learned 235. Under the U.S. Aids to Navigation System on the Western Rivers, which is TRUE of a preferred channel buoy?Not learned 236. 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 237. You are underway in an area where the charted depth is 8 fathoms. You compute the height of tide to be -4.0 feet. The draft of your vessel is 5.0 feet (1.52 meters). You determine the depth of the water beneath your keel to be __________.Not learned 238. You are underway on course 241°T at a speed of 18.2 knots. You sight a daymark bearing 241°T at a radar range of 3.9 miles at 1006. If you change course at 1009, what is the course to steer to leave the daymark abeam to starboard at 1.0 mile?Not learned 239. 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 240. You are underway on course 160°T while turning for an engine speed of 10 knots. The current is 210°T at 0.9 knots. What is the speed being made good?Not learned 241. You are underway on course 254°T at a speed of 16.5 knots. You sight a rock bearing 255°T at a radar range of 6.1 miles at 0916. If you change course at 0922, what is the course to steer to leave the rock abeam to starboard at 1.5 miles?Not learned 242. 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 243. 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 244. When using a buoy as an aid to navigation which of the following should be considered?Not learned 245. When using GPS, how many theoretical position lines are required for a two-dimensional fix?Not learned 246. When using a radar in an unstabilized mode, fixes are determined most easily from __________.Not learned 247. 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 248. Using the surface analysis in illustration D049NG below, what wind speed is reported in position C?Not learned 249. When utilizing a Pacific Coast chart, which is the reference plane of soundings?Not learned 250. What will a veering wind do?Not learned 251. What will be the velocity of the tidal current at Port Jefferson Harbor Entrance, NY, at 1600 EST (ZD +5) on 23 December 1983?Not learned 252. Your vessel has changed course and is heading 285°T, you are on the charted range and it appears as in illustration D048NG below. After several minutes the range appears as in illustration D047NG below and your heading is still 285°T. What does this indicate?Not learned 253. Your vessel is on a course of 082°T at 19 knots. At 0255 a light bears 059.5°T, and at 0312 the light bears 037°T. At what time and distance off will your vessel be when abeam of the light?Not learned 254. Your vessel is on a course of 343°T at 14 knots. At 2156 a light bears 320.5°T, and at 2217 the light bears 298°T. At what time and distance off will your vessel be when abeam of the light?Not learned 255. Your vessel is entering port and you have steadied up on a range, dead ahead, in line with your keel. After a few minutes the range, still dead ahead, appears as shown in illustration D047NG below. Which action should you take?Not learned 256. 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 257. 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 258. 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 259. While your vessel is proceeding down a channel you notice a range of lights in line with your vessel's mast. If your vessel is on course 001° per gyrocompass and the charted value of the range of lights is 359°T, what is the gyro compass error?Not learned 260. 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 261. 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 262. A vessel sighting a northern right whale dead ahead should __________.Not learned 263. Your vessel is steering 143°T at 16 knots. At 2147 a light bears 106°T and at 2206 the same light bears 078°T. What will be your distance off when abeam?Not learned 264. Your vessel is steering 263°T at 22 knots. At 0413 a light bears 294°T and at 0421 the same light bears 312°T. What will be your distance off when abeam?Not learned 265. Your vessel is steering course 197°psc, variation for the area is 7°E, and deviation is 4°W. The wind is from the west, producing a 2° leeway. Which true course are you making good?Not learned 266. 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 267. What weather change accompanies the passage of a cold front in the Northern Hemisphere?Not learned 268. Which weather element cannot be measured accurately while on board a moving vessel?Not learned 269. A weather forecast states that the wind will commence backing. What does this indicate if you are in the Northern Hemisphere?Not learned 270. Weather observations provided by each weather station include all of the following except which item?Not learned 271. In a weather report, which defines the term "visibility"?Not learned 272. Weather systems in the middle latitudes generally travel in which direction?Not learned 273. What does a white buoy with a blue band signify?Not learned 274. What does a white buoy with an orange cross within a diamond marked on it indicate?Not learned 275. What do widely spaced isobars on a weather map indicate?Not learned 276. What wind reverses directions seasonally?Not learned 277. You wish to check the deviation of your standard magnetic compass. You find a natural range that you steer for and note that the gyrocompass heading is 034°, and the heading by standard magnetic compass is 026°. The gyro error is 1°W. Variation is 9°E. What is the deviation for that heading?Not learned 278. You wish to make good a course of 035°T while turning for an engine speed of 12 knots. The set is 340°T, and the drift is 2 knots. What course should you steer?Not learned 279. 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 280. On a working copy of a weather map, a cold front is represented by what color line?Not learned 281. 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 282. While on a course of 152°T, a light bears 9° on the port bow at a distance of 11.6 miles. What course should you steer to pass 3 miles abeam of the light leaving it to port?Not learned 283. Determine the height of the tide at 1430 EST (ZD +5) at New Bedford, MA, on 10 April 1983.Not learned 284. 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 285. What will be the velocity and direction of the tidal current at Old Ferry Point, NY, at 1340 EST (ZD +5) on 5 February 1983?Not learned 286. What will be the velocity of the tidal current at New London Harbor Entrance, CT, at 1615 EST (ZD +5) on 26 December 1983?Not learned 287. 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 288. Your vessel has a draft of 24 feet. On 7 April 1983 you wish to pass over a temporary obstruction near Lovell Island, MA, that has a charted depth of 22 feet. Allowing for a safety margin of 3.1 feet under your keel, what is the earliest time after 0100 EST (ZD +5) that this passage can be made?Not learned 289. On 10 November 2023 at 0630, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). Your vessel will transit 15nm and make good 12.5 knots to a berth where the nearest tidal current station is ACT6706. What will be the direction and velocity of the current as you approach the dockNot learned 290. On 10 November 2023 at 2130, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). Your vessel will transit 15nm and make good 12.5 knots to a berth where the nearest tidal current station is ACT6706. What will be the direction and velocity of the current as you approach the dockNot learned 291. 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 292. 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 293. How are cumulonimbus clouds formed?Not learned 294. When using GPS, how many theoretical position lines are required for a three-dimensional fix?Not learned 295. What is the approximate geographic range of Horton Point Light, NY, if your height of eye is 40 feet (12.2 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".Not learned 296. The Light List indicates that a light has a nominal range of 14 miles and is 42 feet high (12.8 meters). If the visibility is 6 miles and your height of eye is 20 feet (6.1 meters), at what approximate distance will you sight the light?Not learned 297. 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 298. The Light List shows that a navigational light has a nominal range of 5 miles and a height above water of 21 feet (6.4 meters). Your height of eye is 32 feet (9.8 meters) and the visibility is 1.0 mile. At what approximate range will you first sight the light?Not learned 299. Determine the approximate geographic visibility of an object, with a height above the water of 85 feet (25.9 meters), for an observer with a height of eye of 60 feet (18.3 meters).Not learned 300. The luminous range of a light takes into account which factor?Not learned