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1. 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?

 
 
 
 

2. Yesterday your chronometer read 11h 59m 59s at 1200 GMT time tick. Today the chronometer reads 12h 00m 01s at the 1200 GMT tick. What is the chronometer rate?

 
 
 
 

3. Yesterday your chronometer read 11h 59m 59s at the 1200 GMT time tick. Today the chronometer reads 11h 59m 57s at the 1200 time tick. What is the chronometer rate?

 
 
 
 

4. 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?

 
 
 
 

5. You are approaching a drawbridge and have sounded the proper whistle signal requesting it to open. You hear a signal of one prolonged and one short blast from the bridge. Which action should you take?

 
 
 
 

6. You are approaching a drawbridge and have sounded the request-for- opening signal. The bridge has responded with five short blasts. How would you respond?

 
 
 
 

7. You are approaching a drawbridge and must pass through during a scheduled closure period. What signal should you sound?

 
 
 
 

8. You are approaching a light fitted with a RACON. The light may be identified on the radar by __________.

 
 
 
 

9. You are approaching a lock and see a flashing amber light located on the lock wall. You should __________.

 
 
 
 

10. You are approaching a multiple-span bridge at night. The main navigational channel span will be indicated by __________.

 
 
 
 

11. You are approaching a swing bridge at night, what will indicate that the bridge is open for river traffic?

 
 
 
 

12. You are approaching a vertical lift bridge. You know the span is fully open when __________.

 
 
 
 

13. You are approaching an open drawbridge and sound the proper signal. You receive no acknowledgment from the bridge. Which action should you take?

 
 
 
 

14. 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?

 
 
 
 

15. You are approaching Gallipolis Lock and Dam. The traffic signal light is flashing red. You should __________.

 
 
 
 

16. 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?

 
 
 
 

17. You are ascending a river and exchanging navigational information via radiotelephone with a descending vessel. If the descending vessel advises you to "watch for the set" above point X, what would you expect to encounter above point X?

 
 
 
 

18. You are at anchor in the anchorage at the entrance to Delaware Bay. If you weigh anchor at 1445 DST (ZD +4) on 24 July 1983 and proceed northbound enroute to Philadelphia at a speed of 10 knots, you will have __________.

 
 
 
 

19. You are attempting to locate your position relative to a hurricane in the Northern Hemisphere. If the wind direction remains steady, but with diminishing velocity, you are most likely __________.

 
 
 
 

20. You are downbound approaching a lock and see 3 green lights in a vertical line. This indicates __________.

 
 
 
 

21. You are downbound on the Ohio River locking through Greenup. The chamber has been emptied and the lower gates are open. You hear one short blast of the whistle from the lock. You should __________.

 
 
 
 

22. You are enroute to Jacksonville, FL, from San Juan, P.R. There is a fresh N'ly wind blowing. As you cross the axis of the Gulf Stream you would expect to encounter __________.

 
 
 
 

23. You are enroute to Savannah, GA, from Recife, Brazil. There is a strong N'ly wind blowing. As you cross the axis of the Gulf Stream you would expect to encounter __________.

 
 
 
 

24. You are entering an African port and see ahead of you a red can-shaped buoy. What action should you take?

 
 
 
 

25. You are entering an east coast port and see a buoy with a yellow triangle painted on it. What does the symbol indicate?

 
 
 
 

26. You are heading in a northerly direction when you come across an easterly current. Your vessel will __________.

 
 
 
 

27. You are heading out to sea in a buoyed channel and see a quick- flashing green light on a buoy ahead of you. In U.S. waters, you should leave the buoy __________.

 
 
 
 

28. You are holding position above Gallipolis Lock and Dam when you hear two long blasts of the horn from the lock. This indicates that you should __________.

 
 
 
 

29. You are in a buoyed channel at night and pass a lighted buoy with an irregular characteristic. You should report this to the __________.

 
 
 
 

30. You are in a channel in U.S. waters near an industrial plant with a load/discharge facility for barges. You see an emergency rotating flashing light on the facility light up. What does this indicate?

 
 
 
 

31. You are in charge of a power-driven vessel crossing a river on the Western Rivers. You must keep out of the way of __________.

 
 
 
 

32. 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?

 
 
 
 

33. You are in the Northern Hemisphere and a tropical wave is located 200 miles due west of your position. Where will the wave be located 24 hours later?

 
 
 
 

34. You are informed of defects or changes in aids to navigation by __________.

 
 
 
 

35. You are located within a stationary high pressure area. Your aneroid barometer is falling very slowly. This indicates a(n) __________.

 
 
 
 

36. You are navigating in pilotage waters using running fixes. The maximum time between fixes should be about __________.

 
 
 
 

37. 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 to, heading seaward. To have the most favorable tide throughout, you should time your arrival at the entrance to Delaware Bay __________.

 
 
 
 

38. You are on a voyage from New Orleans to Boston and navigating off the Florida coast. You will get the greatest benefit from the Gulf Stream if you navigate __________.

 
 
 
 

39. You are planning a voyage from New York to Norway via the English Channel. Which publication contains information on the dangers to navigation in the English Channel?

 
 
 
 

40. You are planning a voyage from San Francisco to Japan. Which publication contains information on the ocean routes?

 
 
 
 

41. 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?

 
 
 
 

42. 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?

 
 
 
 

43. You are plotting a running fix. The LOP to be run forward is an arc from a radar range, what technique should be used?

 
 
 
 

44. You are proceeding up a channel at night. It is marked by a range which bears 185°T. You steady up on a compass course of 180° with the range in line dead ahead. This indicates that you(r) __________.

 
 
 
 

45. You are pushing a tow ahead and passing close to another towboat which is pushing ahead in the same direction (you are overtaking). After the towheads pass close alongside __________.

 
 
 
 

46. You are pushing a tow ahead, at high speed, near the right hand bank of a canal. The forces affecting your towboat and tow will tend to __________.

 
 
 
 

47. You are required to enter a lock on your voyage. Information on the lock regulations, signals, and radio communications can be found in __________.

 
 
 
 

48. You are running parallel to the coast and estimate that the current is against you. In plotting a running fix using bearings from the same object on the coast, the greatest safety margin from inshore dangers will result if what speed is used to determine the fix?

 
 
 
 

49. You are running parallel to the coast and plotting running fixes using bearings of the same object. You are making more speed than assumed for the running fix. In relation to the position indicated by the fix you will be __________.

 
 
 
 

50. You are running parallel to the coast and take a running fix using bearings of the same object. If you are making less speed than used for the running fix, in relation to the position indicated by the fix, you will be __________.

 
 
 
 

51. You are sailing south on the Intracoastal Waterway (ICW) when you sight a green can buoy with a yellow square painted on it. Which of the following is TRUE?

 
 
 
 

52. 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?

 
 
 
 

53. 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?

 
 
 
 

54. You are steaming along the coast of Ireland in the Irish Sea. You sight a lighted buoy with a white flashing light showing a group of two flashes. The buoy indicates you __________.

 
 
 
 

55. You are steaming eastward in the North Atlantic in an extratropical cyclonic storm and the wind is dead ahead. According to the law of Buys Ballot, the center of the low pressure lies __________.

 
 
 
 

56. 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?

 
 
 
 

57. 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?

 
 
 
 

58. You are steaming southward along the west coast of the United States when you encounter a buoy showing a flashing red light. The buoy should be left on __________.

 
 
 
 

59. 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?

 
 
 
 

60. You are steaming west in the North Atlantic in an extratropical cyclonic storm, and the wind is dead ahead. According to the law of Buys Ballot, the center of low pressure lies to the __________.

 
 
 
 

61. You are steaming west in the South Atlantic in an extratropical cyclonic storm, and the wind is dead ahead. According to the law of Buys Ballot, the center of low pressure lies __________.

 
 
 
 

62. 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?

 
 
 
 

63. You are underway and pass by a lighthouse. Its light, which was white since you first sighted it, changes to red. This means __________.

 
 
 
 

64. You are underway on course 328°T when you sight a buoy broad on your port bow. You are in the best navigable water if the buoy __________.

 
 
 
 

65. You are up bound approaching a lock and dam and see two green lights in a vertical line. This indicates __________.

 
 
 
 

66. You are using a radar in which your own ship is shown at the center, and the heading flash always points to 0°. If bearings are measured in relation to the flash, what type of bearings are produced?

 
 
 
 

67. You can determine if your vessel's position is in the dangerous or navigable semicircle of a hurricane by __________.

 
 
 
 

68. You can expect frontal activity when two air masses collide and __________.

 
 
 
 

69. You can follow the approach of a dangerous cyclonic storm by inspecting __________.

 
 
 
 

70. You determine your vessel's position by taking a range and bearing to a buoy. Your position will be plotted as a(n) __________.

 
 
 
 

71. 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. In this case, the unwanted echoes are called __________.

 
 
 
 

72. You have been informed that dredging operations may be underway in your vicinity. Which buoy indicates the dredging area?

 
 
 
 

73. You have been observing your radar screen and notice that a contact on the screen has remained in the same position, relative to you, for several minutes. Your vessel is making 10 knots through the water. Which statement is TRUE?

 
 
 
 

74. You have determined that you are in the right semicircle of a tropical cyclone in the Northern Hemisphere. What action should you take to avoid the storm?

 
 
 
 

75. You have replaced the chart paper in the course recorder. What is NOT required to ensure that a correct trace is recorded?

 
 
 
 

76. You plot a fix using three lines of position and find they intersect in a triangle. The actual position of the vessel __________.

 
 
 
 

77. You plot a fix using three lines of position and find they intersect in a triangle. You should plot the position of the vessel __________.

 
 
 
 

78. You should log all barometer readings taken at sea __________.

 
 
 
 

79. You should plot a dead reckoning position after every __________.

 
 
 
 

80. You should plot your dead reckoning position __________.

 
 
 
 

81. You sight a buoy fitted with a double- sphere top mark. If sighted at night, this buoy would show a __________.

 
 
 
 

82. You will find information about the duration of slack water in the __________.

 
 
 
 

83. You would expect to find channels marked with the IALA-A Buoyage System in __________.

 
 
 
 

84. Your ARPA has automatic speed inputs from the log. Due to currents, the log is indicating a faster speed than the speed over the ground. What should you expect under these circumstances?

 
 
 
 

85. Your ARPA has been tracking a target and has generated the targets course and speed. The radar did not receive a target echo on its last two scans due to the weather. What should you expect under these circumstances?

 
 
 
 

86. Your ARPA has two guard zones. What is the purpose of the inner guard zone?

 
 
 
 

87. Your chart indicates that there is an isolated rock and names the rock using vertical letters. This indicates the __________.

 
 
 
 

88. Your dead reckoning position should be plotted __________.

 
 
 
 

89. Your Electronic Plotting Aid (EPA) has automatic speed inputs from the log. Due to currents, the log is indicating a faster speed than the speed over the ground. What should you expect under these circumstances?

 
 
 
 

90. Your Electronic Plotting Aid (EPA) has two guard zones. What is the purpose of the inner guard zone?

 
 
 
 

91. Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours. You should __________.

 
 
 
 

92. Your present weather is sunny with a steady barometer. A low swell approaches your vessel from the south with crests passing at relatively long periods of about four per minute. This usually indicates __________.

 
 
 
 

93. 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?

 
 
 
 

94. 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 __________.

 
 
 
 

95. Your radar is set on a true motion display. Which of the following will appear to move across the PPI scope ?

 
 
 
 

96. Your ship received a HYDROLANT advising of a special warning to mariners from the Department of State for ships in the Persian Gulf. You are 400 miles south of, and bound for, the Persian Gulf. What action should you take?

 
 
 
 

97. Your vessel goes aground in soft mud. You would have the best chance of refloating it on the next tide if it grounded at __________.

 
 
 
 

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