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

USCG General Navigation (Set 48)

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Question 1 of 30

Denebola is found in what constellation?

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30 MCQs

#1 Denebola is found in what constellation? #2 What sextant correction corrects the apparent altitude to the equivalent reading at the center of the Earth? #3 The magnitude of three stars is indicated. Which star is the brightest? #4 The owner or Master of a towing vessel that is operating within a Vessel Traffic Service (VTS) area must report specific information to the service. Which of the following choices is not required to be reported? #5 Inferior conjunction is possible for __________. #6 On the Western Rivers, a vessel crossing a river must __________. #7 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? #8 In the celestial equator system of coordinates what is equivalent to the longitude of the Earth system of coordinates? #9 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 __________. #10 When pushing barges ahead close to a steep revetment where there is no current, what is MOST likely to occur? #11 If a chart indicates the depth of water to be 6 fathoms and your draft is 6.0 feet, what is the depth of the water under your keel? (Assume the actual depth and charted depth to be the same) #12 Superior conjunction occurs when __________. #13 The Earth has the shape of a(n) __________. #14 On 6 July, at 1000 zone time, you cross the 180th meridian steaming westward. What is your local time? #15 Opposition occurs when __________. #16 Lines of position may be __________. #17 The spinning motion of a planet around its axis is called __________. #18 The parallel of latitude at 23°27'N is the __________. #19 A deadhead is a(n) __________. #20 Mars is only seen at two phases, one of which __________. #21 In general, the most effective period for observing stars and planets occurs during the darker limit of __________. #22 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 __________. #23 Mars will not be visible __________. #24 The planet Venus can be observed in the morning before sunrise if it is well to the __________. #25 Which is an inferior planet? #26 In low latitudes, the full Moon will always rise at about __________. #27 In the celestial equator system of coordinates, what is comparable to latitude on the terrestrial sphere? #28 You take a bearing of 086° of a lighthouse. What bearing of another object would give the best fix? #29 What is the brightest navigational planet? #30 In the Bay of Fundy, during twilight, you a take sight of Mars. The sextant altitude (hs) is 03°35.5'. Your height of eye is 32 feet and there is no index error. The air temperature is -10°C and the barometer reads 1010 millibars. What is the observed altitude (Ho)?

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