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1. The navigator is concerned with three systems of coordinates. Which system is not of major concern?

 
 
 
 

2. The needle of an aneroid barometer points to 30.05 on the dial. This indicates that the barometric pressure is __________.

 
 
 
 

3. The new Moon cannot be seen because the Moon is __________.

 
 
 
 

4. The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen __________.

 
 
 
 

5. The north equatorial current flows to the __________.

 
 
 
 

6. The numeral in the center of a wind rose circle on a pilot chart indicates the __________.

 
 
 
 

7. The ocean bottom that extends from the shoreline out to an area where there is a marked change in slope to a greater depth is the __________.

 
 
 
 

8. The only cylindrical chart projection widely used for navigation is the __________.

 
 
 
 

9. The parallel of latitude at 23°27'N is the __________.

 
 
 
 

10. The parallel of latitude at 66°33'N is the __________.

 
 
 
 

11. The part of a sextant mounted directly over the pivot of the index arm is the __________.

 
 
 
 

12. The passing of a low pressure system can be determined by periodically checking the __________.

 
 
 
 

13. The path of a celestial body during its daily apparent revolution around the Earth is called its __________.

 
 
 
 

14. The path that a vessel is expected to follow, represented on a chart by a line drawn from the point of departure to the point of arrival, is the __________.

 
 
 
 

15. The path that the Sun appears to take among the stars is the __________.

 
 
 
 

16. The paths of intended travel between three or more points is the __________.

 
 
 
 

17. The period at high or low tide during which there is no change in the height of the water is called the __________.

 
 
 
 

18. The period of a lighted aid to navigation refers to the __________.

 
 
 
 

19. The period of revolution of the Moon is __________.

 
 
 
 

20. The period of the Earth's revolution from perihelion to perihelion is the __________.

 
 
 
 

21. The permanent magnetism of a vessel may change in polarity due to __________.

 
 
 
 

22. The permanent magnetism of a vessel may change in strength due to __________.

 
 
 
 

23. The permanent magnetism of a vessel may change in strength due to __________.

 
 
 
 

24. The phase correction should be applied to sights of Venus and Mars __________.

 
 
 
 

25. The place where a channel moves from along one bank of the river over to the other bank of the river is called a __________.

 
 
 
 

26. The planet Venus can be observed in the morning before sunrise if it is well to the __________.

 
 
 
 

27. The point on the celestial sphere that is directly below an observer is the __________.

 
 
 
 

28. The point on the celestial sphere that is directly over the observer is the __________.

 
 
 
 

29. The point where the Sun is at maximum declination north or south is __________.

 
 
 
 

30. The point where the vertical rise or fall of tide has stopped is referred to as __________.

 
 
 
 

31. The points on the earth's surface where the magnetic dip is 90° are __________.

 
 
 
 

32. The points where the Sun is at 0° declination are known as __________.

 
 
 
 

33. The population of northern right whales, an endangered species, numbers approximately __________.

 
 
 
 

34. The precession of the equinoxes occurs in a(n) __________.

 
 
 
 

35. The precession of the equinoxes of the Earth is __________.

 
 
 
 

36. 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 bound for sea at 1630 and turn for 12 knots, at what point will you lose the flood current?

 
 
 
 

37. 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?

 
 
 
 

38. 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 1430 and turn for 11 knots, at what point will you lose the ebb current?

 
 
 
 

39. 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 1600 and turn for 8 knots, at what point will you lose the ebb current?

 
 
 
 

40. The presence of stratus clouds and a dying wind will usually result in __________.

 
 
 
 

41. The pressure gradient between the horse latitudes and doldrums runs __________.

 
 
 
 

42. The pressure-sensitive element of an aneroid barometer is called a __________.

 
 
 
 

43. The prevailing westerlies of the Southern Hemisphere blow 18 - 30 knots __________.

 
 
 
 

44. The prevailing winds in the band of latitude from approximately 5°N to 30°N are the __________.

 
 
 
 

45. The primary use of apparent time in marine navigation is to __________.

 
 
 
 

46. The prime vertical is the great circle on the celestial sphere that passes through the __________.

 
 
 
 

47. The prime vertical is the reference point from which the angle of which type of observation is measured?

 
 
 
 

48. The principal advantage of NAVTEX radio warnings is that __________.

 
 
 
 

49. The principal purpose of magnetic compass adjustment is to __________.

 
 
 
 

50. The principal vertical circle is that great circle on the celestial sphere that passes through the __________.

 
 
 
 

51. The probability of a sudden wind may be foretold by __________.

 
 
 
 

52. The process by which the temperature and/or moisture characteristics of an air mass changes is called __________.

 
 
 
 

53. The proper way to approach a downstream lock where there is an outdraft is to be __________.

 
 
 
 

54. The purpose of the "set" hand on an aneroid barometer is to __________.

 
 
 
 

55. The length of a wave is the length __________.

 
 
 
 

56. The length of the year with respect to the vernal equinox is the __________.

 
 
 
 

57. The level of database information which cannot be removed from the ECDIS display and consists of information which is required at all times in all geographic areas and under all circumstances is the __________.

 
 
 
 

58. The light characteristic of composite group flashing (2 + 1) is used in the Aids to Navigation System on the Western Rivers for lights on __________.

 
 
 
 

59. The light characteristic of flashing is used in the Aids to Navigation System on the Western Rivers for lights on __________.

 
 
 
 

60. The Light List Does NOT contain information on __________.

 
 
 
 

61. The Light List indicates that a dayboard is a type KGW. You should __________.

 
 
 
 

62. The Light List indicates that a dayboard is a type MR. You should __________.

 
 
 
 

63. The line of position determined from a sight with an observed altitude (Ho) of 88°45.0' should be __________.

 
 
 
 

64. The Local Notice to Mariners is usually published __________.

 
 
 
 

65. The lock chamber is 600 feet X 110 feet. Your towboat is 150 feet X 35 feet. Which of these tows will require a double lockage?

 
 
 
 

66. The lockmaster has given you permission to tie off on the lower guide wall to wait your turn to lock through. What should you be most concerned with?

 
 
 
 

67. The low, dark, sheet-like cloud which is associated with continuous precipitation for many hours is a __________.

 
 
 
 

68. The lubber's line on a magnetic compass indicates __________.

 
 
 
 

69. The luminous range of a light takes into account the __________.

 
 
 
 

70. The lunar day is __________.

 
 
 
 

71. The lunar day is also known as the __________.

 
 
 
 

72. The lunar or tidal day is __________.

 
 
 
 

73. The magnetic compass magnets are acted on by the horizontal component of the Earth's total magnetic force. This magnetic force is GREATEST at the __________.

 
 
 
 

74. The magnetic compass operates on the principle that __________.

 
 
 
 

75. The major problem with Moon sights is the __________.

 
 
 
 

76. The marine sextant is subject to seven different types of errors, four of which may be corrected by the navigator. An error NOT correctable by the navigator is __________.

 
 
 
 

77. The maritime radio system consisting of a series of coast stations transmitting coastal warnings is called __________.

 
 
 
 

78. The maximum difference between mean time and apparent time is __________.

 
 
 
 

79. The maximum distance at which a light may be seen under existing visibility conditions is called __________.

 
 
 
 

80. The mean sun used to measure time moves __________.

 
 
 
 

81. The Milky Way is an example of a __________.

 
 
 
 

82. The Moon and Sun are in line over your meridian. Tomorrow when the Sun is over your meridian, the Moon will be __________.

 
 
 
 

83. The Moon is farthest from the Earth at __________.

 
 
 
 

84. The Moon is nearest to the Earth at __________.

 
 
 
 

85. The Moon is subject to four types of libration. Which of the following is NOT one of these types of libration?

 
 
 
 

86. The Moon is subject to four types of libration. Which of the following is NOT one of these types of libration?

 
 
 
 

87. The most accurate method of determining gyrocompass error while underway is by __________.

 
 
 
 

88. The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is __________.

 
 
 
 

89. The most important information to be obtained from a barometer is the __________.

 
 
 
 

90. The motion of celestial bodies relative to other celestial bodies is known as __________.

 
 
 
 

91. The movement of water away from the shore or downstream is called a(n) __________.

 
 
 
 

92. The nadir is the point on the celestial sphere that is __________.

 
 
 
 

93. The National Geospatial-Intelligence Agency (formerly the National Imagery and Mapping Agency) would produce a chart of the coast of __________.

 
 
 
 

94. The National Ocean Service publishes the __________.

 
 
 
 

95. The navigable semicircle of a hurricane in the Northern Hemisphere is that area of the storm measured __________.

 
 
 
 

96. The navigable semicircle of a tropical storm in the South Indian Ocean is located on which side of the storm's track?

 
 
 
 

97. The navigable semicircle of a typhoon in the Southern Hemisphere is the area __________.

 
 
 
 

98. The navigation regulations applicable to a U.S. inland waterway can be found in the __________.

 
 
 
 

99. The navigational triangle uses parts of two systems of coordinates, one of which is the celestial equator system, the other system is the __________.

 
 
 
 

100. The navigational triangle uses parts of two systems of coordinates, one of which is the horizon system and the other is the __________.

 
 
 
 

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