Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG General Navigation (Set 45)

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Question 1 of 30

You take a bearing of 142° and 259° of two objects. Which bearing of a third object will give the best fix?

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30 MCQs

#1 You take a bearing of 142° and 259° of two objects. Which bearing of a third object will give the best fix? #2 A phase correction may be applicable to correct the sextant altitude correction of __________. #3 Altair is found in what constellation? #4 The path that the Sun appears to take among the stars is the __________. #5 What is the equivalent of 8 min. 56 sec. in arc units? #6 What is the equivalent of 2°52' in time units? #7 You are on course 226°T. In order to check the latitude of your vessel, you should observe a celestial body on which bearing? #8 A towboat is pushing barges ahead at a dangerously fast speed when __________. #9 Which statement about an estimated position is TRUE? #10 The distance between any two meridians measured along a parallel of latitude and expressed in miles is the __________. #11 At evening stars, the last stars that should be observed are those with an azimuth in what quadrant? #12 A first magnitude star is __________. #13 When daylight savings time is kept, the time of tide and current calculations must be adjusted. One way of doing this is to __________. #14 A great circle crosses the equator at 173°E. It will also cross the equator at what other longitude? #15 Antares is found in what constellation? #16 Diurnal aberration is due to __________. #17 A star that suddenly becomes several magnitudes brighter and then gradually fades is a __________. #18 A plane that cuts the Earth's surface at any angle and passes through the center will always form __________. #19 The expression "first magnitude" is usually used to refer only to bodies of magnitude __________. #20 A great circle will intersect the equator at how many degrees of longitude apart? #21 The path of a celestial body during its daily apparent revolution around the Earth is called its __________. #22 The correction tables in the Nautical Almanac for use with Moon sights do NOT include the effects of __________. #23 Where will you find information about the duration of slack water? #24 What is the relative bearing of an object dead astern? #25 Retrograde motion is the __________. #26 In the celestial equator system of coordinates what is equivalent to the colatitude of the Earth system of coordinates? #27 At morning stars, the first stars that should be observed are those with an azimuth in which quadrant? #28 The Star Lists in the Nautical Almanac are based on which of the following magnitudes? #29 Your vessel is at the equator at midnight on 1 January, and a star is observed rising. At what time will this same star rise on 1 February, assuming your vessel's location is still at the equator? #30 A plane perpendicular to the polar axis will never form what line on the Earth's surface?

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