Q342 - Navigation General: Great Lakes and Inland, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. How many degrees are there on a compass card?Not learned 2. The heading of a vessel is indicated by what part of the compass?Not learned 3. What does the lubber's line on a magnetic compass indicate?Not learned 4. A vessel heading NE is on which course?Not learned 5. On 27 April 1983, at 1105 DST (ZD +4), what will be the predicted height of tide at Falkner Island, CT?Not learned 6. On 6 June 1983, at 1719 EST (ZD +5), what will be the predicted height of tide at Chester, PA?Not learned 7. Which agency maintains federal aids to navigation?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. Where can the annual change in variation for an area be found?Not learned 11. You have another ship overtaking you close aboard to starboard. You have 3 radar targets bearing 090° relative at ranges of .5-mile, 1 mile, and 1.5 miles. Which term is given to these unwanted echoes?Not learned 12. 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 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. You are approaching an open drawbridge and sound the proper signal. You receive no acknowledgment from the bridge. Which action should you take?Not learned 15. You are approaching a swing bridge at night. How do you know that the bridge is open for river traffic?Not learned 16. 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 17. What is the approximate geographic range of Southwest Ledge Light, Connecticut, if your height of eye is 32 feet (9.8 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".Not learned 18. 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 19. To avoid error, how should you read the scale of an aneroid barometer?Not learned 20. Barometers are calibrated at which standard temperature?Not learned 21. What is the basic principle of the magnetic compass?Not learned 22. 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 23. What does a buoy with a composite group-flashing light indicate?Not learned 24. Which buoy may be odd numbered?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. A buoy having red and green horizontal bands would have which light characteristic?Not learned 27. The buoy symbol printed on your chart is leaning to the northeast. What does this indicate?Not learned 28. Which cardinal quadrant is represented by the topmark in illustration D024NG below?Not learned 29. What causes deviation in a magnetic compass?Not learned 30. Which causes the Earth's irregular heating?Not learned 31. What is a characteristic of cardinal marks?Not learned 32. Which characteristic and color will a preferred-channel buoy show?Not learned 33. What is characteristic of an isophase light?Not learned 34. Which is a characteristic of warm air masses?Not learned 35. Charts should be corrected by using information published in which text?Not learned 36. 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 37. What do chart legends printed in capital letters indicate about the associated landmark?Not learned 38. Which defines the term charted depth?Not learned 39. The charted depth alongside the south face of Mystic Pier, Charlestown, MA, is 35 feet. Your maximum draft is 38 feet. You wish to have 2 feet under the bottom, on a rising tide, when you go alongside to discharge a heavy lift. What is the earliest time after 0900 EST (ZD +5), on 2 February 1983, that you can dock?Not learned 40. Which class of tide prevails in the greatest number of important harbors on the Atlantic Coast?Not learned 41. The climate of the eastern coast of the Gulf of Mexico __________.Not learned 42. When would cloud formations be minimal?Not learned 43. The Coast Guard Captain of the Port has excluded all traffic from a section of a port, while a regatta is taking place. Which describes the buoys marking this exclusion area?Not learned 44. What are the colors of a mid-channel daymark?Not learned 45. What is the color scheme of navigational marks used for informational or regulatory purposes?Not learned 46. What color is a triangular daymark?Not learned 47. What is the compass course of a vessel heading NNE?Not learned 48. What is the compass course of a vessel heading SW?Not learned 49. Which condition(s) is(are) necessary for the formation of dew?Not learned 50. When considering currents, which defines the term set?Not learned 51. By convention, what color is the south pole of a magnet painted?Not learned 52. In which country would you expect the channels to be marked with the IALA-B Buoyage System?Not learned 53. While on a course of 019°pgc, a light bears 14° on the port bow at a distance of 15.3 miles. What course should you steer to pass 1.5 miles abeam of the light, leaving it to port?Not learned 54. While on a course of 066°pgc, a light bears 13° on the port bow at a distance of 12.3 miles. What course should you steer to pass 4 miles abeam of the light leaving it to port?Not learned 55. 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 56. While on a course of 097°pgc, a light bears 8° on the port bow at a distance of 11.7 miles. What course should you steer to pass 3 miles abeam of the light leaving it to port?Not learned 57. 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 58. 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 59. 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 60. Which of the following should be done when crossing the magnetic equator?Not learned 61. The Daily Memorandum contains which information?Not learned 62. Where can information about the direction and velocity of rotary tidal currents be found?Not learned 63. The datum from which the predicted heights of tides are reckoned in the tide tables is __________.Not learned 64. Which datum is used for soundings on charts of the East Coast of the United States?Not learned 65. Which daymark has no lateral significance?Not learned 66. What daymark shape is used in the lateral system?Not learned 67. Which defines the term relative humidity?Not learned 68. Which describes the visible range marked on charts for lights?Not learned 69. What does the description "Racon" beside an illustration on a chart mean?Not learned 70. You desire to make good a true course of 129°. The variation is 7°E, magnetic compass deviation is 4°E, and gyrocompass error is 2°W. An easterly wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?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. 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 73. Determine the time after 0300 CST (ZD +6) when the velocity of the tidal current will be 0.5 knot on 16 April 1983, at Port Arthur Canal Entrance, TX.Not learned 74. Deviation in a compass is caused by which of the following?Not learned 75. The difference between the heights of low and high tide is the __________.Not learned 76. Your draft is 24 feet. You wish to pass over an obstruction near Lovell Island, MA, on 6 May 1983. The charted depth is 22 feet. Allowing a safety margin of 3.0 feet, what is the earliest time after 0200 DST (ZD +4) that this passage can be made?Not learned 77. When drawing a weather map and an isobar crosses a front, the isobar is drawn __________.Not learned 78. What does the drift and set of tidal, river, and ocean currents refer to?Not learned 79. As you enter a U.S. channel from seaward, which is TRUE concerning the numbers on the buoys?Not learned 80. 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 81. 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 82. On entering from seaward, which is TRUE of a starboard side daymark?Not learned 83. Your weather chart indicates that you will cross the cold front of a low-pressure system in about 24 hours. Which statement is TRUE?Not learned 84. What feature(s) of a daymark is (are) used to identify the beacon upon which it is mounted?Not learned 85. Which feature, when set to zero, might allow a GPS unit to have an accuracy equivalent to Precise Positioning Service receiver capability?Not learned 86. Which is a feature of a special daymark?Not learned 87. You will find daily information about the duration of slack water in a port on the Atlantic Coast in which publication?Not learned 88. Fog forms when which condition exists?Not learned 89. How can you follow the approach of a dangerous cyclonic storm?Not learned 90. Which of the following describes the principal purpose of magnetic compass adjustment?Not learned 91. Which of the following traits possessed by an articulated light makes it superior to other types of buoys?Not learned 92. 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 93. The four standard light colors used for lighted aids to navigation are red, green, white, and __________.Not learned 94. What is the function of a red triangular daymark?Not learned 95. A general chart intended for coastwise navigation outside of outlying reefs can have which scale?Not learned 96. Red lights may appear on which buoys?Not learned 97. How often is The Local Notice to Mariners updated?Not learned 98. What does a hygrometer measure?Not learned 99. Under the U.S. Aids to Navigation System, what does a lighted buoy with a spherical topmark mark indicate?Not learned 100. Under the IALA cardinal system, what does a mark with a quick white light showing 6 flashes followed by one long flash indicate in relation to the location of the safest water?Not learned 101. Illustration D011NG below represents the geographic location of a vessel and the radar presentation at the same time. Which statement is TRUE?Not learned 102. Illustration D036NG below represents a fixed C of E lock and dam. What navigational light(s) is(are) exhibited at the position indicated by the letter D?Not learned 103. In illustration D044NG below, a pillar buoy is indicated by which letter?Not learned 104. What indicates a dual-purpose buoy?Not learned 105. Which of the sources contains information on Northern Right Whales?Not learned 106. Which item contains information about temporary, short-term changes affecting the safety of navigation in U.S. waters?Not learned 107. Where can information for updating paper nautical charts primarily be found?Not learned 108. How are you informed of defects or changes in aids to navigation?Not learned 109. You have been informed that dredging operations may be underway in your vicinity. Which buoy indicates the dredging area?Not learned 110. Which instrument is used to measure the relative humidity of the air?Not learned 111. How is the intensity of a light expressed in the Light Lists?Not learned 112. Which item in illustration D034NG below shows a MorseNot learned 113. Which item in illustration D034NG below shows an occulting light?Not learned 114. Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?Not learned 115. In which situation is the light characteristic of composite group flashing (2 + 1) used in the Aids to Navigation System on the Western Rivers?Not learned 116. Which light characteristic may be used on a special mark?Not learned 117. 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 118. Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?Not learned 119. Lighted white and orange buoys must show which color light?Not learned 120. What is the name given to lines on a chart which connect points of equal magnetic variation?Not learned 121. Which line connects the points of zero magnetic dip?Not learned 122. Which term is given to a line on a weather chart connecting places which have the same barometric pressure?Not learned 123. 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 124. At which location is the value of sixty nautical miles per degree of geodetic latitude most correct?Not learned 125. 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 126. How many high waters usually occur each day on the East Coast of the United States?Not learned 127. Which measurement uses mean high water as the reference plane?Not learned 128. Mean low water is the average height of __________.Not learned 129. Which term is given to the mechanical lifting of air by the upslope slant of the terrain?Not learned 130. Which meteorological feature controls the climate of the Gulf of Mexico and the coastal area during late spring and summer?Not learned 131. When the Moon's declination is maximum north, which of the following will occur?Not learned 132. A mooring buoy, if lighted, shows which color light?Not learned 133. The National Oceanic and Atmospheric Administration publishes which item?Not learned 134. Which nautical charts are intended for coastwise navigation outside of outlying reefs and shoals?Not learned 135. 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 136. When the navigational channel passes under a fixed bridge, the edges of the channel are marked on the bridge with what lights?Not learned 137. Which navigational mark may only be lettered?Not learned 138. If you observe a buoy off station which action should you take?Not learned 139. If an observer in the Northern Hemisphere faces the surface wind, where is the center of low pressure located?Not learned 140. When operated over a muddy bottom, a fathometer may indicate which of the following?Not learned 141. An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol?Not learned 142. In order to utilize the capacity of a lock to its maximum, pleasure craft are locked through with all of the following EXCEPT which barges?Not learned 143. When outbound from a U.S. port, what does a buoy displaying a flashing red light indicate?Not learned 144. What does the period of a lighted aid to navigation refer to?Not learned 145. Permission to enter the riverward chamber of twin locks is given by the lockmaster and consists of which sound signal?Not learned 146. 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 147. 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 148. Pressure gradient is a measure of __________.Not learned 149. What is the primary source of the earth's weather?Not learned 150. Prior to reading an aneroid barometer, why should you tap the face lightly with your finger?Not learned 151. "Proceeding from seaward" for the purpose of the direction of buoying offshore, lateral system buoys would be proceeding ________.Not learned 152. Which publication contains information on navigation regulations, landmarks, channels, anchorages, tides, currents, and clearances of bridges for Chesapeake Bay?Not learned 153. Which publication lists Class I and II private aids to navigation in or along navigable waters of the United States?Not learned 154. What is published by the U.S. Coast Guard?Not learned 155. Your radar displays your ship off center. As you proceed on your course, your ship's marker moves on the PPI scope while echoes from land masses remain stationary. What is this display called?Not learned 156. Your radar indicates a target; however, there is no visible object at the point indicated. A large mountain, approximately 50 miles away on the same bearing as the target, is breaking the horizon. You should suspect the radar target is caused by __________.Not learned 157. You are radar scanning for a buoy fitted with a racon. In illustration D017NG below, which radar screen represents the presentation you should expect on the PPI?Not learned 158. When recording the wind direction in the weather log, which information would you report?Not learned 159. What do red sectors of navigation lights warn mariners of?Not learned 160. Which is the reference datum used in determining the heights of land features on most charts?Not learned 161. In both regions of the IALA buoyage system, which topmark shown in illustration D022NG below is used on a special mark?Not learned 162. A safe water daymark has what shape?Not learned 163. A sailing chart could have which scale?Not learned 164. 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 165. 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 166. You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow triangle painted on it. Which statement is TRUE?Not learned 167. The scale on a chart is given as 1:5,000,000. What does this ratio indicate?Not learned 168. Which scale is considered a harbor chart?Not learned 169. The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean __________.Not learned 170. What is a sling psychrometer used to measure?Not learned 171. 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 172. In which source could you find the number of a chart for a certain geographic area?Not learned 173. 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 174. When do Spring tides occur?Not learned 175. What is the standard atmospheric pressure in millibars?Not learned 176. 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 177. 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 178. You are steaming southward along the west coast of the United States when you sight a buoy showing a flashing green light. How should you pass this buoy?Not learned 179. 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 180. 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 181. You are steering 318°psc. A northeasterly wind causes 3° of leeway. The variation is 14°E and the deviation table is extracted below. What will be the true course made good? DEVIATION TABLE Magnetic Heading Deviation 300° 2°E 315° 0 330° 2°WNot learned 182. Which wind is a strong, often violent, northerly wind occurring on the Pacific coast of Mexico, particularly during the colder months?Not learned 183. What does the symbol shown in illustration D033NG below indicate on a chart?Not learned 184. Which term defines the difference between the heights of low and high tides?Not learned 185. The term "flood current" refers to that time when the water __________.Not learned 186. Which is the term given to the time required for a lighted aid to complete a full cycle of light changes?Not learned 187. Which term is used to describe the wind speed and direction observed from a moving vessel?Not learned 188. If a towboat requires a double lockage it shall give which sound signal at a distance of not more than one mile from the lock?Not learned 189. A tropical storm is a tropical cyclone that generates winds of which speed?Not learned 190. Which is TRUE if the compass error of a magnetic compass has no deviation?Not learned 191. Which is TRUE concerning air masses near the earth's surface?Not learned 192. Which is TRUE concerning Spring tides?Not learned 193. Which is TRUE concerning Wind velocity?Not learned 194. 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 195. The true course between two points is 312°. Your gyrocompass has an error of 3°W. You make an allowance of 4° leeway for a west by south wind. What gyro course should be steered to make the true course good?Not learned 196. The true course between two points is 078°. Your gyrocompass has an error of 2°E. You make an allowance of 3° leeway for a north wind. What gyro course should be steered to make the true course good?Not learned 197. Which is TRUE of echo-sounders?Not learned 198. Which type of cloud is among the most dependable for giving an indication of an approaching weather system?Not learned 199. Which type of cloud is composed entirely of ice crystals and is found at very high altitudes?Not learned 200. From which type of cloud can a tornado or waterspout develop?Not learned 201. Which type of daymark is used to mark the starboard side of the channel when entering from sea?Not learned 202. Which type of GPS receiver has at least four channels to process information from several satellites simultaneously?Not learned 203. Which type of precipitation occurs only in thunderstorms with strong convection currents that convey raindrops above and below the freezing level?Not learned 204. Under the U.S. Aids to Navigation System, which category is a yellow buoy?Not learned 205. In the U.S. Aids to Navigation System, what do red and green horizontally-banded buoys mark?Not learned 206. Under the U.S. Aids to Navigation System on the Western Rivers, what color are the buoys marking the starboard side of the channel when going upstream?Not learned 207. In the U.S. Aids to Navigation System on the Western Rivers, a preferred channel buoy to be left to port while proceeding downstream will __________.Not learned 208. 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 209. 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 210. 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 211. You are upbound approaching a lock and dam and see two green lights in a vertical line. What does this indicate?Not learned 212. 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 213. Which is used to mark the draw span of a floating drawbridge?Not learned 214. When using an echo sounder in deep water, it is NOT unusual to encounter which situation?Not learned 215. When using GPS, how many theoretical position lines are required for a two-dimensional fix?Not learned 216. When using GPS without Selective Availability, what can you expect your horizontal accuracy to be of the unit?Not learned 217. 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 218. How is variation indicated on a small-scale nautical chart?Not learned 219. 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 220. 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 221. 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 222. Your vessel is on a course of 144°T at 16 knots. At 0126 a light bears 166.5°T, and at 0152 the light bears 189°T. At what time and distance off will your vessel be when abeam of the light?Not learned 223. Your vessel is on a course of 144°T at 20 knots. At 0022 a light bears 117.5°T, and at 0035 the light bears 099°T. At what time and at what distance off will your vessel be when abeam of the light?Not learned 224. Your vessel is on a course of 253°T at 18 knots. At 2027 a light bears 275.5°T, and at 2055 the light bears 298°T. At what time and distance off will your vessel be when abeam of the light?Not learned 225. Your vessel is on a course of 358°T at 19 knots. At 0316 a light bears 024.5°T, and at 0334 the light bears 043°T. At what time and at what distance off will your vessel be when abeam of the light?Not learned 226. A vessel heading WNW is on which course?Not learned 227. 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 228. 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 229. Which weather element cannot be measured accurately while on board a moving vessel?Not learned 230. On a weather map, what does a large letter "H" indicate?Not learned 231. What wind reverses directions seasonally?Not learned 232. You wish to make good a course of 230°T while turning for an engine speed of 12.5 knots. The set is 180°T, and the drift is 1.7 knots. What course should you steer?Not learned 233. If within 500 yards (460m) of a Northern Right Whale, you are lawfully obligated to take which actions?Not learned 234. 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 235. 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 236. What will be the height of tide at Three Mile Harbor Entrance, Gardiners Bay, NY, at 0700 (ZD +5) on 14 Nov 1983?Not learned 237. While proceeding up a channel on course 010° per gyrocompass, you notice a pair of range lights in alignment with the masts of your vessel when viewed forward. A check of the chart shows the range to be 009°T and the variation to be 15°W. If the ship's course is 026°psc, what is the deviation for the present heading?Not learned 238. You are steering 154° per gyrocompass. The wind is northeast by east, causing 4° leeway. The gyro error is 3° east, variation is 11° west, and deviation is 7°E. What is the true course made good?Not learned 239. (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 240. 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 241. What will be the velocity of the tidal current in Bolivar Roads, Texas, at a point 0.5 mile north of Ft. Point, on 23 November 1983 at 0330 CST (ZD +6)?Not learned 242. 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 243. 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 244. 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 245. 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 246. What is the difference between magnetic heading and compass heading called?Not learned 247. 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 248. On 14 October 2023, you will be docking at the Southern Branch Elizabeth River, VA at the second high tide. The berth is located between NOAA reference tidal station #8638660 and subordinate station #8639348. What time (LST) will you be dockingNot learned 249. On 9 November 2023 at 1130, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). Your vessel will transit 15nm and make good 10.0 knots to a berth where the nearest tidal current station is ACT6706. What will be the direction and velocity of the current as you approach the dockNot learned 250. Which of the following defines the zone of separation between two air masses of different characteristics?Not learned 251. When using GPS, how many theoretical position lines are required for a three-dimensional fix?Not learned 252. The luminous range of a light takes into account which factor?Not learned 253. What is the approximate geographic range of Assateague Light, VA, if your height of eye is 52 feet (15.8 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".Not learned 254. The Light List shows that a navigational light has a nominal range of 15 miles and a height above water of 29 feet (8.8 meters). Your height of eye is 52 feet (15.8 meters) and visibility is 6.0 miles. At which approximate range will you first sight the light?Not learned 255. The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen __________.Not learned 256. Geographic range is the maximum distance at which a light may be seen under which conditions?Not learned 257. 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