Assessment Test


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1. When crossing the magnetic equator the __________.

 
 
 
 

2. When daylight savings time is kept the times of tide and current calculations must be adjusted. One way of doing this is to __________.

 
 
 
 

3. When determining compass error by an azimuth of Polaris, you enter the Nautical Almanac with the __________.

 
 
 
 

4. When displayed under a single-span fixed bridge, red lights indicate __________.

 
 
 
 

5. When drawing a weather map and an isobar crosses a front, the isobar is drawn __________.

 
 
 
 

6. When entering a channel from seaward, the numbers on buoys __________.

 
 
 
 

7. When entering from seaward, a buoy displaying a composite group (2+1) flashing red light indicates __________.

 
 
 
 

8. When entering from seaward, a buoy displaying a single-flashing red light indicates __________.

 
 
 
 

9. When is the peak of the hurricane season in the western North Pacific?

 
 
 
 

10. When is the rhumb line distance the same as the great circle distance?

 
 
 
 

11. When making landfall at night, the light from a powerful lighthouse may sometimes be seen before the lantern breaks the horizon. This light is called the __________.

 
 
 
 

12. When making landfall at night, you can determine if a light is a major light or an offshore buoy by _________.

 
 
 
 

13. When navigating a vessel, you __________.

 
 
 
 

14. When navigating coastwise and hurricane warnings are received, you should __________.

 
 
 
 

15. When navigating in high latitudes and using a chart based on a Lambert conformal projection, __________.

 
 
 
 

16. When observing a rapid rise in barometric pressure, you may expect __________.

 
 
 
 

17. When one upbound vessel is overtaking another vessel and both are pushing a tow ahead, what reaction may you expect?

 
 
 
 

18. When operated over a muddy bottom, a fathometer may indicate __________.

 
 
 
 

19. When outbound from a U.S. port, a buoy displaying a flashing red light indicates __________.

 
 
 
 

20. When plotting a circle of equal altitude for a high altitude sight, the radius of the circle is determined by the formula __________.

 
 
 
 

21. When pushing a tow and approaching barges tied off to the shore, you should __________.

 
 
 
 

22. When pushing barges ahead close to a steep revetment where there is no current, what is MOST likely to occur?

 
 
 
 

23. When recording the wind direction in the weather log, you would report the __________.

 
 
 
 

24. When reporting wind direction, you should give the direction in __________.

 
 
 
 

25. When should a navigator rely on the position of floating aids to navigation?

 
 
 
 

26. What is NOT a side of the navigational triangle used in sight reduction?

 
 
 
 

27. What is NOT an advantage of the rhumb line track over a great circle track?

 
 
 
 

28. What is NOT found in the Mississippi River System Light List?

 
 
 
 

29. What is NOT true concerning color sectors of lights?

 
 
 
 

30. What is published by the U.S. Coast Guard?

 
 
 
 

31. What is the basic principle of the magnetic compass?

 
 
 
 

32. What is the brightest navigational planet?

 
 
 
 

33. What is the characteristic of a quick light?

 
 
 
 

34. What is the definition of height of tide?

 
 
 
 

35. What is the direction of rotation of tropical cyclones, tropical storms and hurricanes in the Northern Hemisphere?

 
 
 
 

36. What is the distance from the bottom of a wave trough to the top of a wave crest?

 
 
 
 

37. What is the FIRST sign of the existence of a well developed tropical cyclone?

 
 
 
 

38. What is the first visible indication of the presence of a tropical cyclone or hurricane?

 
 
 
 

39. What is the light phase characteristic of a lighted isolated-danger mark?

 
 
 
 

40. What is the major advantage of high altitude observations?

 
 
 
 

41. What is the major limitation in using the Sight Reduction Tables for Air Navigation Volume I (Pub. No. 249) for star sights?

 
 
 
 

42. What is the major problem with taking high altitude sun observations?

 
 
 
 

43. What is the most important source of information to be used in correcting charts and keeping them up to date?

 
 
 
 

44. What is TRUE concerning an anemometer on a moving vessel?

 
 
 
 

45. What is TRUE concerning new editions of Light Lists?

 
 
 
 

46. What is TRUE of the history display of a target's past positions on an ARPA?

 
 
 
 

47. What is typical of warm front weather conditions?

 
 
 
 

48. What is used to help prevent damage to barges, locks, and landings when you are locking or landing a tow?

 
 
 
 

49. What is used to measure wind velocity?

 
 
 
 

50. What kind of pressure systems travel in tropical waves?

 
 
 
 

51. What kind of weather would you expect to accompany the passage of a tropical wave?

 
 
 
 

52. 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?

 
 
 
 

53. What lights would you see on the Illinois water way when any wickets of the dam or bear traps are open, or partially open, which may cause a set in the current conditions in the upper lock approach?

 
 
 
 

54. What natural feature is responsible for the rather even climate found on the Florida peninsula throughout the year?

 
 
 
 

55. What occurs when rising air cools to the dew point?

 
 
 
 

56. What option does an Electronic Plotting Aid (EPA) not have?

 
 
 
 

57. What publication contains descriptions of the coast line, buoyage systems, weather conditions, port facilities, and navigation instructions for the United States and its possessions?

 
 
 
 

58. What publication contains information about the port facilities in Cadiz, Spain?

 
 
 
 

59. What publication has information on the climate, distances, navigation regulations, outstanding landmarks, channels and anchorages of Long Island Sound?

 
 
 
 

60. What sextant correction corrects the apparent altitude to the equivalent reading at the center of the Earth?

 
 
 
 

61. What should you apply to a fathometer reading to determine the depth of water?

 
 
 
 

62. What term is used to describe a river barge designed to carry coal or any similar cargo not requiring weather protection?

 
 
 
 

63. What term is used to describe a tank barge constructed with the structural framing inside the cargo tank and the side shell plating containing the cargo?

 
 
 
 

64. What term is used to describe a tank barge constructed with the structural framing outside the cargo tank and the cargo tank plating separated from the shell plating?

 
 
 
 

65. What type of clouds are associated with a cold front?

 
 
 
 

66. What U.S. agency is responsible for NAVAREA warnings?

 
 
 
 

67. What volume of the Coast Guard Light List is used for the Mississippi River system?

 
 
 
 

68. What weather change accompanies the passage of a cold front in the Northern Hemisphere?

 
 
 
 

69. What will a veering wind do?

 
 
 
 

70. What will act to dissipate fog?

 
 
 
 

71. What will cause the ARPA to emit a visual alarm, audible alarm, or both?

 
 
 
 

72. WhaWhat will NOT induce errors into a Doppler sonar log?

 
 
 
 

73. What wind reverses directions seasonally?

 
 
 
 

74. What would give the best radar echo?

 
 
 
 

75. 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?

 
 
 
 

76. When a buoy marks a channel bifurcation, the preferred channel is NOT indicated by __________.

 
 
 
 

77. When a cold air mass and a warm air mass meet, and there is no horizontal motion of either air mass, it is called a(n) __________.

 
 
 
 

78. When a current flows in the opposite direction to the waves, the wave __________.

 
 
 
 

79. When a dual purpose marking is used, the mariner following the Intracoastal Waterway should be guided by the __________.

 
 
 
 

80. When a high pressure system is centered north of your vessel in the Northern Hemisphere __________.

 
 
 
 

81. When a hurricane passes over colder water or land and loses its tropical characteristics, the storm becomes a(n) __________.

 
 
 
 

82. When a light is first seen on the horizon it will disappear again if the height of eye is immediately lowered several feet. When the eye is raised to its former height the light will again be visible. This process is called __________.

 
 
 
 

83. When a low pressure area is approaching, the weather generally __________.

 
 
 
 

84. When a magnetic compass is not in use for a prolonged period of time it should __________.

 
 
 
 

85. When a tornado moves over the water from land it is called a __________.

 
 
 
 

86. When a warm air mass is adjacent to a cold air mass, the separation line between the two is called a(n) __________.

 
 
 
 

87. When a warm air mass overtakes a cold air mass, the contact surface is called a __________.

 
 
 
 

88. When a warm air mass overtakes and replaces a cold air mass, the contact surface is called a(n) __________.

 
 
 
 

89. When adjusting a magnetic compass for error, a deviation table should be made __________.

 
 
 
 

90. When applying a dip correction to the sighted sextant angle (hs), you always subtract the dip because you are correcting __________.

 
 
 
 

91. When approaching a lock and at a distance of not more than a mile, vessels desiring a single lockage shall sound which signal?

 
 
 
 

92. When approaching a lock entrance, the visual signal displayed when a single lock is ready for entrance is a flashing __________.

 
 
 
 

93. When approaching a preferred- channel buoy, the best channel is NOT indicated by the __________.

 
 
 
 

94. When attempting an upstream landing while pushing empty barges ahead in a hard onshore wind, the approach is best made __________.

 
 
 
 

95. When changing from a compass course to a true course you should apply __________.

 
 
 
 

96. When cold air displaces warm air you have a(n) __________.

 
 
 
 

97. When compared to air temperature, which factor is most useful in predicting fog?

 
 
 
 

98. When correcting apparent altitude to observed altitude, you do NOT apply a correction for __________.

 
 
 
 

99. When correcting the sextant altitude to apparent altitude you are correcting for inaccuracies in the reading and __________.

 
 
 
 

100. When crossing a front isobars tend to __________.

 
 
 
 


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