Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG General Navigation (Set 54)
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Question 1 of 30
The navigational triangle uses parts of two systems of coordinates, one of which is the celestial equator system, the other system is the __________.
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30 MCQs #1 The navigational triangle uses parts of two systems of coordinates, one of which is the celestial equator system, the other system is the __________. #2 The navigational triangle uses parts of two systems of coordinates, one of which is the horizon system and the other is the __________. #3 The owner or Master of a towing vessel shall ensure that all tests and inspections of gear take place and are logged __________. #4 In the navigational triangle, the angle at the elevated pole is the __________. #5 The correction tables in the front of the Nautical Almanac for use with sun sights do NOT include the effects of __________. #6 The azimuth angle of a sun sight is always measured from the __________. #7 The owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accurately fix the vessel's position using all of the following EXCEPT _________. #8 The date is the same all over the world at __________. #9 What is the geographic longitude of a body whose GHA is 215°15'? #10 A phase correction is applied to observations of __________. #11 A correction for augmentation is included in the Nautical Almanac corrections for __________. #12 Apparent altitude is sextant altitude corrected for __________. #13 When correcting the sextant altitude to apparent altitude you are correcting for inaccuracies in the reading and __________. #14 When correcting the sextant altitude to apparent altitude you are correcting for inaccuracies in the reference level and __________. #15 A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? #16 The distance in miles between the circle of equal altitude for the observed altitude (Ho) and the circle of equal altitude for the computed altitude (Hc) is the __________. #17 The equation of time is 12m 00s and the mean Sun is ahead of the apparent Sun. If you are on the central meridian of your time zone, at what zone time will the apparent Sun cross the meridian? #18 The equation of time is 8m 40s. The apparent Sun is ahead of the mean Sun. If you are on the central meridian of your time zone, the apparent Sun will cross your meridian at __________. #19 When the equation of time is taken from the Nautical Almanac for use in celestial navigation, it is used to determine __________. #20 The primary use of apparent time in marine navigation is to __________. #21 The equation of time measures the __________. #22 Apparent time is based on __________. #23 What is the equivalent of 0°48' in time units? #24 The standard time meridian for zone description -12 is __________. #25 What is the equivalent of 23 min. 20 sec. in arc units? #26 A ship is in longitude 54°00'W on a true course of 270°. The ship's clocks are on the proper time zone. At what longitude should the clocks be changed to maintain the proper zone time? #27 What is the equivalent of 10 min. 52 sec. in arc units? #28 What is the equivalent of 0 min. 16 sec. in arc units? #29 What is the equivalent of 5°54' in time units? #30 What is the equivalent of 47 min. 20 sec. in arc units?
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