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Deck · 2,005 questions

Navigation Problems - USCG Exam Questions

Worked chart problems: plotting courses and fixes, time, speed, and distance, set and drift, and compass error corrections.

Every question below is a real U.S. Coast Guard exam question with four choices. Answer one and the correct choice is revealed instantly, with the USCG reference and illustration where the question uses one.

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All Navigation Problems questions

Questions 801–900 of 2,005 · page 9 of 21

  1. #922 While on a course of 349°T, a light bears 13° on the starboard bow at a distance of 10.8 miles. What course should you steer to pass 2.5 miles abeam o...
  2. #923 While on a course of 216°pgc, a light bears 12° on the port bow at a distance of 11.2 miles. Which course should you steer to pass 2 miles abeam of th...
  3. #924 While on a course of 034°pgc, a light bears 8° on the port bow at a distance of 8.8 miles. What course should you steer to pass 2.5 miles abeam of the...
  4. #925 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...
  5. #926 While on a course of 214°pgc, a light bears 9° on the port bow at a distance of 7.4 miles. What course should you steer to pass 2 miles abeam of the l...
  6. #927 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 t...
  7. #928 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...
  8. #929 While on a course of 159°T, a light bears 11° on the starboard bow at a distance of 10.6 miles. What course should you steer to pass 2 miles abeam of...
  9. #930 While on a course of 279°T, a light bears 12° on the starboard bow at a distance of 9.3 miles. What course should you steer to pass 4 miles abeam of t...
  10. #931 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 li...
  11. #933 Your vessel is underway on a course of 115°T at 18 knots. At 1850 a lighthouse bears 137.5°T. At 1920, the same lighthouse bears 160°T. What time will...
  12. #940 Your vessel is on a course of 311°T at 21 knots. At 1957 a light bears 337.5°T, and at 2018 the light bears 356°T. At what time and at what distance o...
  13. #941 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 o...
  14. #942 Your vessel is on a course of 237°T at 18 knots. At 0404 a light bears 263.5°T, and at 0430 the light bears 282°T. At what time and at what distance o...
  15. #943 Your vessel is on a course of 272°T at 15 knots. At 2113 a light bears 245.5°T, and at 2120 the light bears 227°T. At what time and at what distance o...
  16. #944 Your vessel is on a course of 103°T at 14 knots. At 1918 a light bears 129.5°T, and at 1937 the light bears 148°T. At what time and at what distance o...
  17. #945 Your vessel is on a course of 207°T at 13 knots. At 0539 a light bears 180.5°T, and at 0620 the light bears 162°T. At what time and at what distance o...
  18. #946 Your vessel is on a course of 316°T at 12 knots. At 2326 a light bears 289.5°T, and at 2354 the light bears 271°T. At what time and at what distance o...
  19. #947 You sight a light 9° on your starboard bow at a distance of 21 miles. Assuming you make good your course, what will be your distance off the light whe...
  20. #948 You are steering 246°T, and a light is picked up dead ahead at a distance of 14 miles at 1037. You change course to pass the light 2.5 miles off abeam...
  21. #949 You are steering 078°T, and a light is picked up dead ahead at a distance of 15.6 miles at 2316. You change course to pass the light 4.5 miles off abe...
  22. #950 You are steering 163°T, and a light is picked up dead ahead at a distance of 11 miles at 0142. You change course to pass the light 2 miles off abeam t...
  23. #951 Your vessel is on a course of 255°T, at 14 knots. At 2126 a lighthouse is sighted dead ahead at a distance of 11 miles. You change course at this time...
  24. #952 Your vessel is on a course of 255°T, at 14 knots. At 2116 a lighthouse is sighted dead ahead at a distance of 11 miles. You change course at this time...
  25. #953 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 abe...
  26. #954 You are steering 031°T, and a light is picked up dead ahead at a distance of 12.7 miles at 0017. You change course to pass the light 3.5 miles off abe...
  27. #955 You are steering 173°T, and a light is picked up dead ahead at a distance of 13.9 miles at 0054. You change course to pass the light 4.5 miles off abe...
  28. #956 You are steering 107°T, and a light is picked up dead ahead at a distance of 11 miles at 0847. You change course to leave the light 3 miles off to sta...
  29. #957 You are steering 231°T, and a light is picked up dead ahead at a distance of 12.3 miles at 0338. You change course to pass the light 4 miles off abeam...
  30. #958 You are steering 257°T, and a light is picked up dead ahead at a distance of 13.3 miles at 2016. You change course to pass the light 4 miles off abeam...
  31. #959 You are steering 349°T, and a light is picked up dead ahead at a distance of 17.2 miles at 2122. You change course to pass the light 4.5 miles off abe...
  32. #960 You are steering 202°T, and a light is picked up dead ahead at a distance of 14.6 miles at 2234. You change course to pass the light 5 miles off abeam...
  33. #961 You are steering 287°T, and a light is picked up dead ahead at a distance of 19.4 miles at 0419. You change course to pass the light 4 miles off abeam...
  34. #962 You are on course 086°T, speed 11.7 knots. At 1013 you see a buoy bearing 088°T at a range of 4.8 miles. If you change course at 1019 to leave the buo...
  35. #963 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 daymar...
  36. #964 You are on course 061°T, at a speed of 12.4 knots. At 0839 you see a rock bearing 059°T at a range of 4.4 miles. If you change course at 0845 to leave...
  37. #965 You are on course 006°T, speed 16.6 knots. At 0516 you see a light bearing 008°T at a range of 10.2. If you change course at 0528 to leave the light a...
  38. #966 You are steaming on a course of 198°T at 18.5 knots. At 0316 you observe a lighthouse bearing 235°T. At 0348 the lighthouse bears 259°T. What is your...
  39. #967 You are steaming on a course of 167°T at 19.5 knots. At 1837 you observe a lighthouse bearing 224°T. At 1904 the lighthouse bears 268°T. What is your...
  40. #968 You are steaming on a course of 208°T at 21 knots. At 2019 you observe a lighthouse bearing 129°T. At 2030 the lighthouse bears 103°T. What is your di...
  41. #969 You are steaming on a course of 267°T at 22 knots. At 0433 you observe a lighthouse bearing 290°T. At 0452 the lighthouse bears 328°T. What is your di...
  42. #970 You are steaming on a course of 327°T at 13 knots. At 0207 you observe a lighthouse bearing 020°T. At 0226 the lighthouse bears 042°T. What is your di...
  43. #971 You are steaming on a course of 133°T at 16 knots. At 2216 you observe a lighthouse bearing 086°T. At 2223 the lighthouse bears 054°T. What is your di...
  44. #972 You are steaming on a course of 246°T at 17 knots. At 2107 you observe a lighthouse bearing 207°T. At 2119 the lighthouse bears 179°T. What is your di...
  45. #973 Your vessel is steaming on a course of 140°T at 15 knots. At 1530 a lighthouse bears 200°T. At 1550 it bears 249°T. What is your distance from the lig...
  46. #974 You are running coastwise at 14 knots. You sight a lighthouse abeam at 0912. At 0939 the lighthouse is 4 points abaft the beam. What is your distance...
  47. #976 You are running coastwise in hazy weather; the visibility improves just before you pass a lighthouse abeam. Your speed is 15 knots, and the lighthouse...
  48. #977 You are steaming on a course of 211°T at 17 knots. At 0417 a light bears 184°T, and at 0428 the same light bears 168°T. What is the distance off the l...
  49. #978 You are steaming on a course of 215°T at 14 knots. At 1841 you observe a lighthouse bearing 178°T. At 1904 the same lighthouse bears 156°T. What is yo...
  50. #979 You are steaming on a course of 025°T at 15.5 knots. At 0645 you observe a lighthouse bearing 059°T. At 0655 the same lighthouse bears 075°T. What is...
  51. #980 You are steaming on a course of 058°T at 11.5 knots. At 0209 you observe a lighthouse bearing 129°T. At 0252 the lighthouse bears 173°T. What is your...
  52. #981 You are steaming on a course of 253°T at 14 knots. At 2329 you observe a lighthouse bearing 282°T. At 2345 the lighthouse bears 300°T. What is your di...
  53. #982 You are steaming on a course of 071°T at 19 knots. At 1907 you observe a lighthouse bearing 122°T. At 1915 the lighthouse bears 154°T. What is your di...
  54. #983 You are steaming on a course of 114°T at 17 knots. At 1122 you observe a lighthouse bearing 077°T. At 1133 the lighthouse bears 051°T. What is your di...
  55. #984 Your vessel is steering 194°T at 13 knots. At 0116 a light bears 243°T, and at 0147 the same light bears 267°T. What will be your distance off abeam?
  56. #985 Your vessel is steering 238°T at 11 knots. At 2304 a light bears 176°T, and at 2323 the same light bears 155°T. What will be your distance off abeam?
  57. #986 Your vessel is steering 157°T at 18 knots. At 2018 a light bears 208°T. At 2044 the same light bears 232°T. What will be your distance off when abeam?
  58. #987 Your vessel is steering 096°T at 17 knots. At 1847 a light bears 057°T, and at 1916 the same light bears 033°T. What will be your distance off abeam?
  59. #988 Your vessel is steering 049°T at 15 knots. At 1914 a light bears 078°T, and at 1951 the same light bears 116°T. What will be your distance off abeam?
  60. #989 Your vessel is steering 218°T at 19 knots. At 2223 a light bears 261°T, and at 2234 the same light bears 289°T. What will be your distance off abeam?
  61. #990 Your vessel is steering 354°T at 14 knots. At 0317 a light bears 049°T, and at 0342 the same light bears 071°T. What will be your distance off abeam?
  62. #991 The great circle distance from LAT 35°57.2'N, LONG 05°45.7'W to LAT 24°25.3'N, LONG 83°02.6'W is 3966.5 miles and the initial course is 283.7°T. The l...
  63. #993 You are steaming on course 168°T at a speed of 18 knots. At 1426 you sight a buoy bearing 144°T. At 1435 you sight the same buoy bearing 116°T. What i...
  64. #994 While underway you sight a light 11° on your port bow at a distance of 12 miles. Assuming you make good your course, what will be your distance off th...
  65. #995 Your vessel is steering 283°T at 10 knots. At 0538 a light bears 350°T, and at 0552 the same light bears 002°T. What will be your distance off abeam?
  66. #996 The moon is full and at perigee on 20 January 1983. What is the maximum current you could expect at 2350 (ZD +5) at Nantucket Shoals?
  67. #997 What will be the velocity of the tidal current at New London Harbor Entrance, CT, at 1615 EST (ZD +5) on 26 December 1983?
  68. #999 You get underway from the oil terminal at Marcus Hook, PA, at 0815 ZT (ZD +5) on 20 February 1983, enroute to sea. You will be turning for 11 knots. W...
  69. #1000 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?
  70. #1001 You get underway from the shipyard in Chester, PA, at 1515 DST (ZD +4) on 6 August 1983, enroute to sea. You will be turning for eight knots. What cur...
  71. #1002 What will be the velocity of the tidal current 6 miles south of Shoal Point, NY, at 1850 DST (ZD +4) on 9 July 1983?
  72. #1003 What will be the velocity of the tidal current southwest of Hunts Point, NY, at 0932 EST (ZD +5) on 16 March 1983?
  73. #1004 What will be the velocity and direction of the tidal current at Mobile River Entrance, AL, at 0915 CDT (ZD +5) on 13 May 1983?
  74. #1005 What is the velocity of the tidal current at the east end of Pollock Rip Channel at 1700 DST (ZD +4) on 23 July 1983?
  75. #1006 What will be the velocity of the tidal current at Port Jefferson Harbor Entrance, NY, at 1600 EST (ZD +5) on 23 December 1983?
  76. #1007 What will be the velocity of the tidal current south of Doubling Point, ME, at 1357 EST (ZD +5) on 3 April 1983?
  77. #1008 What will be the direction and velocity of the tidal current at Provincetown Harbor, MA, at 1405 DST (ZD +4) on 5 May 1983?
  78. #1009 What will be the velocity of the tidal current at Grant's Tomb, 123rd Street, NY, NY, at 1412 EST (ZD +5) on 22 March 1983?
  79. #1010 What will be the velocity of the tidal current at 0.2 mile SSW of Clason Point, NY, at 1125 on 17 April 1983?
  80. #1011 What will be the velocity of the tidal current at Port Royal, VA, at 1505 DST (ZD +4) on 4 June 1983?
  81. #1012 What is the predicted velocity of the tidal current 2 miles west of Southwest Ledge for 2330 DST (ZD +4) on 7 September 1983?
  82. #1013 What will be the velocity of the tidal current at Coxsackie, NY, at 0945 EST (ZD +5) on 11 March 1983?
  83. #1014 What will the velocity and direction of the tidal current be at Port Morris, NY, at 1135 DST (ZD +4) on 13 May 1983?
  84. #1015 What will be the velocity of the tidal current at Bournedale, MA, at 1135 DST (ZD +4) on 3 May 1983?
  85. #1016 What will be the time of maximum flood current at Sagamore Bridge on the Cape Cod Canal during the morning of 6 December 1983 (ZD +5)?
  86. #1017 You want to transit Pollock Rip Channel, MA, on 6 April 1983. What is the period of time around the 0955 (ZD +5) slack in which the current does not e...
  87. #1018 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 tha...
  88. #1019 You will transit the Cape Cod Canal on 7 November 1983. If you arrive at the R R Bridge at 1655 EST (ZD +5), for what period of time during your trans...
  89. #1020 You are bound for the Chelsea docks in the Hudson River. The Captain wants to arrive at the docks at the first slack water on 28 July 1983. You are ke...
  90. #1021 You want to transit Hell Gate 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....
  91. #1022 You are on a coastwise voyage bound for Marcus Hook, PA. Your speed is 15 knots. You wish to use the flood tide to facilitate docking starboard side t...
  92. #1023 Determine the time after 0730 EST (ZD +5) when the velocity of the current will be 2.1 knots on 26 March 1983, at Fort Pulaski, GA.
  93. #1024 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.
  94. #1025 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.
  95. #1026 The predicted time that the ebb begins at the entrance to Delaware Bay is 1526. You are anchored off Chestnut St. in Philadelphia. If you get underway...
  96. #1027 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 underw...
  97. #1028 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 underw...
  98. #1029 The wind at Frying Pan shoals has been south-southwesterly at an average velocity of 30 mph. The predicted set and drift of the rotary current are 232...
  99. #1030 The wind in the vicinity of Nantucket Shoals Light has been southerly at an average speed of 23 mph. The predicted set and drift of the rotary current...
  100. #1031 The wind at Frying Pan shoals has been west-northwesterly at an average velocity of 40 mph. The predicted set and drift of the rotary current are 323°...

Navigation Problems questions: what to expect

Q How many Navigation Problems questions are in the Deck pool?

There are 2,005 Navigation Problems questions on this site, every one released by the U.S. Coast Guard or taken from the National Maritime Center's sample examinations, with its correct answer. The exam draws its Navigation Problems module from the same pool.

Q What score do I need to pass the Navigation Problems module?

Most USCG exam modules, including Navigation Problems, require 70 percent to pass. Rules of the Road modules require 90 percent.

Q Are these the real USCG Navigation Problems exam questions?

Yes. They are the published U.S. Coast Guard questions, matched to the National Maritime Center's 2026 sample examinations. Answer any question to see the correct choice, the USCG reference and the illustration where the question uses one.

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About the Deck question pool

The Deck pool holds the current U.S. Coast Guard questions for every deck credential, from Able Seaman and the OUPV six-pack up to unlimited Master. Each question is multiple choice with four options, graded instantly, with the USCG reference shown where one exists.