Q213 - Navigation Problems: Chart Plot, USCG prep certification 2026

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1. The following questions are based on Chart 12221TR, Chesapeake Bay Entrance, and the supporting publications. The draft of your vessel is 9.0 feet (2.75 meters) Gyro error is 2°W Variation is 10°W "Per standard magnetic compass" is abbreviated "psc" “Per gyrocompass” is abbreviated “pgc” DEVIATION TABLE Magnetic Heading Deviation 000° 1.5°E 030° 2.0°E 060° 1.0°E 090° 0° 120° 1.0°W 150° 1.5°W 180° 2.5°W 210° 1.5°W 240° 1.0°W 270° 0.5°W 300° 0° 330° 0.5°E On 31 July, you are anchored at LAT 37°22.4'N, LONG 75°39.9'W You get underway at 0240 enroute to Yorktown, VA What is the course psc from the anchorage to point A located 0.5 mile east of Cape Charles Lighted Bell Buoy 14?Not learned 2. Which of the following describes the coast between Great Machipongo Inlet and Cape Charles?Not learned 3. If your engines turn for 6.5 knots, and you encounter a 0.5 knot southerly current, what is your ETA at point A?Not learned 4. What is the course to steer per gyrocompass from the anchorage to point "A" if easterly winds are causing 3° of leeway?Not learned 5. At 0250, Great Machipongo Inlet Light "5" (37°21.8'N, 75°43.7'W) bears 279°pgc. At 0320, the light bears 320° pgc. If you are making good 6.5 knots, what is the position of your 0320-running fix?Not learned 6. At 0400, you obtain the following information: Sand Shoal Inlet South Light bearing 303° true at 7.1nm What is your 0400 position?Not learned 7. The visibility is about 5 miles. Which statement about Cape Charles Light is TRUE?Not learned 8. Which statement about your 0400 position is TRUE?Not learned 9. At 0405, you increase speed. At 0500, your position is LAT 37°06.0'N, LONG 75°41.1'W. What is the approximate depth of the water under the keel?Not learned 10. At 0600, you are entering the inbound leg of the traffic separation scheme at position LAT 36°59.2'N, LONG 75°47.6' W. Course is 250°T. At 0605, Cape Henry Light bears 249°T At 0610, Cape Henry Light bears 248°T At 0625, Cape Henry Light bears 247°T Based on this, you know you are __________.Not learned 11. Which of the following is a characteristic of the abandoned lighthouse at Cape Henry?Not learned 12. Weather broadcasts for the Norfolk area are broadcast on which frequency?Not learned 13. \When Cape Henry Light is abeam, what is the approximate distance to Yorktown?Not learned 14. As you pass between trestle "B" and trestle "C" of the Chesapeake Bay Bridge - Tunnel, you sight along the trestle "C" when it is in line. The trestle bears 057° per standard magnetic compass while the vessel is heading 320°T. Which of the following can be determined from this information?Not learned 15. The wind is easterly and will cause 2° of leeway. The current is 180° at 0.5 knot. If your engines are turning for 8.0 knots, what should you steer to remain in York River Entrance Channel?Not learned 16. The following questions are based on Chart 12221TR, Chesapeake Bay Entrance, and the supporting publications. Your vessel has a draft of 8.0 feet (2.4 meters) Gyro error is 2°W Variation is 10°W "Per standard magnetic compass" is abbreviated "psc" “Per gyrocompass” is abbreviated “pgc” DEVIATION TABLE Magnetic Heading Deviation 000° 0° 030° 1°W 060° 2°W 090° 4°W 120° 2°W 150° 1°W 180° 1°E 210° 2°E 240° 3°E 270° 3°E 300° 2°E 330° 1°E At 1730 your position is LAT 37°13.9'N, LONG 76°26.4'W. You are steering course 088°psc at an engine speed of 8.0 knots. What is your distance off Tue Marshes Light at 1730?Not learned 17. What is the maximum allowable speed of vessels underway up river from Tue Marshes Light?Not learned 18. At 1750, your position is LAT 37°14.5'N, LONG 76°22.9'W. What was the course made good between 1730 and 1750?Not learned 19. At 1800, Tue Marshes Light bears 264.5°pgc, York Spit Swash Channel Light "3" bears 007°pgc. What is your position?Not learned 20. What course should you steer per standard magnetic compass in order to navigate down the center of York River Entrance Channel (ignore set and drift)?Not learned 21. You have just passed York River Entrance Channel Lighted Buoys "13" and "14". The chart shows a light approximately 1.0 mile off your port beam with a light characteristic "Fl 6 sec". What is the name of this light?Not learned 22. At 1930, your vessel is between York River Entrance Channel Lighted Buoys "1YR" and "2". From this position, you change course to 142°pgc at an engine speed of 8.0 knots. At 2001, you obtain the following information: Chesapeake Channel Tunnel North Light bearing- 131°pgc Thimble Shoal Light bearing - 248°pgc What were the set and drift between 1930 and 2001?Not learned 23. At 2015, your vessel is at the Chesapeake Bay Bridge and Tunnel midway between buoys "13" and "14". If the height of tide is -1 foot (-0.3 meters), what is the approximate depth of water?Not learned 24. If you steer 143°pgc from your 2015 position at an engine speed of 8.0 knots, at what time would you reach a point midway between buoys "11" and "12" (ignore set and drift)?Not learned 25. At 2015, you alter course to 154°pgc. What is the course per standard magnetic compass (psc)?Not learned 26. Which of the following concerning Thimble Shoal Channel is TRUE?Not learned 27. At 2118, you obtain the following bearings: Cape Henry Light: 148°pgc Cape Charles Light: 033°pgc Thimble Shoal Light: 291°pgc what is the speed to make good from your 2118 position to arrive at this time?Not learned 28. What is the latitude and longitude of your 2118 position?Not learned 29. From your 2118 position, you are steering 288°T at an engine speed of 7.0 knots. If visibility is suddenly reduced to 2 miles, at what time can you expect Old Point Comfort Light to become visible again?Not learned 30. If the Old Point Comfort main light was inoperative what emergency light would be shown?Not learned 31. The following questions are based on Chart 12221TR, Chesapeake Bay Entrance, and the supporting publications. The draft of your vessel is 9.0 feet (2.75 meters) Gyro error is 2°W Variation is 10°W "Per standard magnetic compass" is abbreviated "psc" “Per gyrocompass” is abbreviated “pgc” DEVIATION TABLE Magnetic Heading Deviation 000° 1.5°E 030° 2.0°E 060° 1.0°E 090° 0° 120° 1.0°W 150° 1.5°W 180° 2.5°W 210° 1.5°W 240° 1.0°W 270° 0.5°W 300° 0° 330° 0.5°E On 31 July, you are anchored at LAT 37°22.4'N, LONG 75°39.9'W You get underway at 0240 enroute to Yorktown, VA What is the course psc from the anchorage to point A located 0.5 mile east of Cape Charles Lighted Bell Buoy 14?Not learned 32. Which of the following describes the coast between Great Machipongo Inlet and Cape Charles?Not learned 33. If your engines turn for 6.5 knots, and you encounter a 0.5 knot southerly current, what is your ETA at point A?Not learned 34. What is the course to steer per gyrocompass from the anchorage to point "A" if easterly winds are causing 3° of leeway?Not learned 35. At 0250, Great Machipongo Inlet Light "5" (37°21.8'N, 75°43.7'W) bears 279°pgc. At 0320, the light bears 320° pgc. If you are making good 6.5 knots, what is the position of your 0320-running fix?Not learned 36. At 0400, you obtain the following information: Sand Shoal Inlet South Light bearing 303° true at 7.1nm What is your 0400 position?Not learned 37. The visibility is about 5 miles. Which statement about Cape Charles Light is TRUE?Not learned 38. Which statement about your 0400 position is TRUE?Not learned 39. At 0405, you increase speed. At 0500, your position is LAT 37°06.0'N, LONG 75°41.1'W. What is the approximate depth of the water under the keel?Not learned 40. At 0600, you are entering the inbound leg of the traffic separation scheme at position LAT 36°59.2'N, LONG 75°47.6' W. Course is 250°T. At 0605, Cape Henry Light bears 249°T At 0610, Cape Henry Light bears 248°T At 0625, Cape Henry Light bears 247°T Based on this, you know you are __________.Not learned 41. Which of the following is a characteristic of the abandoned lighthouse at Cape Henry?Not learned 42. Weather broadcasts for the Norfolk area are broadcast on which frequency?Not learned 43. \When Cape Henry Light is abeam, what is the approximate distance to Yorktown?Not learned 44. As you pass between trestle "B" and trestle "C" of the Chesapeake Bay Bridge - Tunnel, you sight along the trestle "C" when it is in line. The trestle bears 057° per standard magnetic compass while the vessel is heading 320°T. Which of the following can be determined from this information?Not learned 45. The wind is easterly and will cause 2° of leeway. The current is 180° at 0.5 knot. If your engines are turning for 8.0 knots, what should you steer to remain in York River Entrance Channel?Not learned 46. The following questions should be answered using Chart 12354TR, Long Island Sound - Eastern Part, and the supporting publications. Your draft is 11 feet (3.3 meters). Gyro error is 3°W Variation is 14°W "Per standard magnetic compass" is abbreviated "psc" “Per gyrocompass” is abbreviated “pgc” DEVIATION TABLE Magnetic Heading Deviation 000° 2.0°E 030° 1.0°E 060° 0.0° 090° 0.5°W 120° 1.0°W 150° 2.0°W 180° 2.0°W 210° 1.0°W 240° 0.5°W 270° 0.5°E 300° 1.5°E 330° 2.5°E At 0700 Stratford Shoal Middle Ground Light bears 143°pgc at 1.8 miles. What is your 0700 position?Not learned 47. At 0725, Stratford Point Light bears 327°pgc at 3.1 miles. At this time, you wish to change course to 048°T. The current is 135°T at 1.8 knots. Your engine speed is 8 knots. What course must you steer to make good 048°T?Not learned 48. Which structure should you look for while trying to locate Stratford Point Light?Not learned 49. At 0830, you obtain the following radar information: Branford Reef Light bearing 079° true at 4.35 nm What is your vessel's position?Not learned 50. From your 0830 position, you wish to make good 097°T. There is no current, but a southerly wind is producing 4° leeway. What course should you steer per standard magnetic compass in order to make good your true course?Not learned 51. You make good 097°T from your 0830 fix. With a westerly current of 1.2 knots, what engine speed will you have to turn for from your 0830 position in order to arrive abeam of Six Mile Reef Buoy "8C" at 1030?Not learned 52. At 0910, your DR position is LAT 41°11.9'N, LONG 72°47.8'W. Your vessel is on course 097°T at 9.5 knots, and the weather is foggy. At 0915, Branford Reef Light is sighted through a break in the fog bearing 318°T. At 0945, Falkner Island Light is sighted bearing 042°T. What is your 0945 running fix position?Not learned 53. What do the dotted lines around Goose Island and Kimberly Reef represent?Not learned 54. At 1100, your position is LAT 41°11.3'N, LONG 72°28.0'W. You are steering a course of 069°T to leave Black Point one mile off your port beam. It has been reported that the Long Sand Shoal Buoys and Hatchett Reef Buoys are off station. What will serve to keep your vessel in safe water and away from these hazards?Not learned 55. Orient Point Light is __________.Not learned 56. At 1210, you are in position LAT 41°14.3'N, LONG 72°16.5'W. What is the charted depth of water?Not learned 57. From your 1210 position, you are making good a course of 083°T. Your engines are turning RPMs for 10 knots. The set and drift of the current are 310° at 1.7 knots. At what time should you expect to enter the red sector of New London Harbor Light?Not learned 58. Your vessel is proceeding up New London Harbor Channel, and you are in line with the range. What would be your course per standard magnetic compass?Not learned 59. New London Harbor is __________.Not learned 60. The distance from New London to the east entrance of the Cape Cod Canal is __________.Not learned 61. The following questions should be answered using Chart 12354TR, Long Island Sound - Eastern Part, and the supporting publications. Your draft is 12 feet (3.6 meters) Your height of eye is 16 feet (4.8 meters) Gyro error is 2°W Variation is 14°W "Per standard magnetic compass" is abbreviated "psc" “Per gyrocompass” is abbreviated “pgc” DEVIATION TABLE Magnetic Heading Deviation 000° 0° 030° 1°W 060° 2°W 090° 4°W 120° 2°W 150° 1°W 180° 1°E 210° 2°E 240° 3°E 270° 3°E 300° 2°E 330° 1°E You are on course 092°T and the engines are turning for 8 knots. At 0452, you take the following bearings: Stratford Point Light: 020°pgc Stratford Shoal (Middle Ground) Light: 141°pgc What is your 0452 position?Not learned 62. If the visibility is 10 miles, what is the earliest time you can expect to see New Haven Light?Not learned 63. At 0507, Stratford Shoal Middle Ground Light bears 208°pgc. What is the position of your 0507 running fix?Not learned 64. Based on your running fix, you __________.Not learned 65. Your 0507 position is about 7 miles from Bridgeport, CT. What is the distance from this position to Newport, RI?Not learned 66. Your 0530 position is LAT 41°04.9'N, LONG 73°01.1'W. What is the course per standard magnetic compass to a position 1.0 mile south of Twenty Eight Foot Shoal "TE" buoy?Not learned 67. The south shore of Long Island Sound near your position is __________.Not learned 68. At 0530, you change course to 090°T and increase speed to 8.5 knots. What is the course to steer per gyrocompass if northerly winds are causing 2° of leeway?Not learned 69. At 0615, Stratford Point Light bears 292°pgc, Falkner Island Light bears 052°pgc, and Branford Reef Light bears 018°pgc. What was the current since 0530?Not learned 70. What is the approximate depth of the water under the keel at 0615?Not learned 71. At 0615 you change course to 078°T. If there is no current, when will Falkner Island Light be abeam?Not learned 72. At 0700, Falkner Island Light bears 023°pgc, and the range to the south tip of Falkner Island is 7.1 miles. What was the course made good since 0615?Not learned 73. At 0705, the gyro loses power. At 0730, you are on course 092° per standard magnetic compass (psc) when you take the following bearings: Falkner Island Light: 356°psc Horton Point Light: 123°psc Kelsey Point Breakwater Light: 048°psc What is the position of your 0730 fix?Not learned 74. Horton Point Light __________.Not learned 75. If visibility permits, Little Gull Island Light will break the horizon at a range of approximately __________.Not learned 76. The following questions should be answered using Chart 12354TR, Long Island Sound - Eastern Part, and the supporting publications. Your draft is 12 feet (3.6 meters) Your height of eye is 16 feet (4.8 meters) Gyro error is 2°W Variation is 14°W "Per standard magnetic compass" is abbreviated "psc" “Per gyrocompass” is abbreviated “pgc” DEVIATION TABLE Magnetic Heading Deviation 000° 0° 030° 1°W 060° 2°W 090° 4°W 120° 2°W 150° 1°W 180° 1°E 210° 2°E 240° 3°E 270° 3°E 300° 2°E 330° 1°E You are on course 092°T and the engines are turning for 8 knots. At 0452, you take the following bearings: Stratford Point Light: 020°pgc Stratford Shoal (Middle Ground) Light: 141°pgc What is your 0452 position?Not learned 77. If the visibility is 10 miles, what is the earliest time you can expect to see New Haven Light?Not learned 78. At 0507, Stratford Shoal Middle Ground Light bears 208°pgc. What is the position of your 0507 running fix?Not learned 79. Based on your running fix, you __________.Not learned 80. Your 0507 position is about 7 miles from Bridgeport, CT. What is the distance from this position to Newport, RI?Not learned 81. Your 0530 position is LAT 41°04.9'N, LONG 73°01.1'W. What is the course per standard magnetic compass to a position 1.0 mile south of Twenty Eight Foot Shoal "TE" buoy?Not learned 82. The south shore of Long Island Sound near your position is __________.Not learned 83. At 0530, you change course to 090°T and increase speed to 8.5 knots. What is the course to steer per gyrocompass if northerly winds are causing 2° of leeway?Not learned 84. At 0615, Stratford Point Light bears 292°pgc, Falkner Island Light bears 052°pgc, and Branford Reef Light bears 018°pgc. What was the current since 0530?Not learned 85. What is the approximate depth of the water under the keel at 0615?Not learned 86. At 0615 you change course to 078°T. If there is no current, when will Falkner Island Light be abeam?Not learned 87. At 0700, Falkner Island Light bears 023°pgc, and the range to the south tip of Falkner Island is 7.1 miles. What was the course made good since 0615?Not learned 88. At 0705, the gyro loses power. At 0730, you are on course 092° per standard magnetic compass (psc) when you take the following bearings: Falkner Island Light: 356°psc Horton Point Light: 123°psc Kelsey Point Breakwater Light: 048°psc What is the position of your 0730 fix?Not learned 89. Horton Point Light __________.Not learned 90. If visibility permits, Little Gull Island Light will break the horizon at a range of approximately __________.Not learned 91. The following questions should be answered using Chart 12354TR, Long Island Sound - Eastern Part, and the supporting publications. Your draft is 12 feet (3.6 meters) Your height of eye is 16 feet (4.8 meters) Gyro error is 2°W Variation is 14°W "Per standard magnetic compass" is abbreviated "psc" “Per gyrocompass” is abbreviated “pgc” DEVIATION TABLE Magnetic Heading Deviation 000° 0° 030° 1°W 060° 2°W 090° 4°W 120° 2°W 150° 1°W 180° 1°E 210° 2°E 240° 3°E 270° 3°E 300° 2°E 330° 1°E You are on course 092°T and the engines are turning for 8 knots. At 0452, you take the following bearings: Stratford Point Light: 020°pgc Stratford Shoal (Middle Ground) Light: 141°pgc What is your 0452 position?Not learned 92. If the visibility is 10 miles, what is the earliest time you can expect to see New Haven Light?Not learned 93. At 0507, Stratford Shoal Middle Ground Light bears 208°pgc. What is the position of your 0507 running fix?Not learned 94. Based on your running fix, you __________.Not learned 95. Your 0507 position is about 7 miles from Bridgeport, CT. What is the distance from this position to Newport, RI?Not learned 96. Your 0530 position is LAT 41°04.9'N, LONG 73°01.1'W. What is the course per standard magnetic compass to a position 1.0 mile south of Twenty Eight Foot Shoal "TE" buoy?Not learned 97. The south shore of Long Island Sound near your position is __________.Not learned 98. At 0530, you change course to 090°T and increase speed to 8.5 knots. What is the course to steer per gyrocompass if northerly winds are causing 2° of leeway?Not learned 99. At 0615, Stratford Point Light bears 292°pgc, Falkner Island Light bears 052°pgc, and Branford Reef Light bears 018°pgc. What was the current since 0530?Not learned 100. What is the approximate depth of the water under the keel at 0615?Not learned 101. At 0615 you change course to 078°T. If there is no current, when will Falkner Island Light be abeam?Not learned 102. At 0700, Falkner Island Light bears 023°pgc, and the range to the south tip of Falkner Island is 7.1 miles. What was the course made good since 0615?Not learned 103. At 0705, the gyro loses power. At 0730, you are on course 092° per standard magnetic compass (psc) when you take the following bearings: Falkner Island Light: 356°psc Horton Point Light: 123°psc Kelsey Point Breakwater Light: 048°psc What is the position of your 0730 fix?Not learned 104. Horton Point Light __________.Not learned 105. If visibility permits, Little Gull Island Light will break the horizon at a range of approximately __________.Not learned