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

USCG General Navigation (Set 22)

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Question 1 of 30

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

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30 MCQs

#1 The points on the earth's surface where the magnetic dip is 90° are __________. #2 The vertical angle between the horizontal and the magnetic line of force is the __________. #3 Magnetic dip is a measurement of the angle between the __________. #4 What is the basic principle of the magnetic compass? #5 By convention, the Earth's north magnetic pole is colored __________. #6 By convention, the south pole of a magnet is painted __________. #7 By convention, the north pole of a magnet is painted __________. #8 By convention, the Earth's south magnetic pole is colored __________. #9 By convention, the south seeking ends of a compass' magnets are colored __________. #10 By convention, the north seeking ends of a compass' magnets are colored __________. #11 What is an advantage of the magnetic compass aboard vessels? #12 When a magnetic compass is not in use for a prolonged period of time it should __________. #13 A magnetic compass card is marked in how many degrees? #14 When a magnetic compass is not in use for a prolonged period of time it should __________. #15 A magnetic compass card is marked in how many degrees? #16 Yesterday your chronometer read 11h 59m 59s at the 1200 GMT time tick. Today the chronometer reads 11h 59m 57s at the 1200 time tick. What is the chronometer rate? #17 When your vessel is on the storm track but behind the storm's center the __________. #18 The atmosphere in the vicinity of a high pressure area is called a(n) __________. #19 Which instrument is used to measure the relative humidity of the air? #20 Using the surface analysis in illustration D049NG below, which wind speeds are reported at position A? #21 Which of the following represents the slope of a warm front? #22 In a cyclone the lowest pressure is found in the __________. #23 To avoid error you should read the scale of an aneroid barometer with your eye placed __________. #24 You are underway on course 050°T and your maximum speed is 10 knots. The eye of a hurricane bears 100°T, 90 miles from your position. The hurricane is moving towards 285°T at 19 knots. Which course should you steer at 10 knots to have the maximum CPA? #25 You are underway on course 120°T and your maximum speed is 12 knots. The eye of a hurricane bears 150°T, 120 miles from your position. The hurricane is moving towards 295°T at 20 knots. If you maneuver at 12 knots to avoid the hurricane, what could be the maximum CPA? #26 Weather information is available from __________. #27 Weather information provided by the National Weather Service (NWS) advisories should be used along with __________. #28 When a high pressure system is centered north of your vessel in the Northern Hemisphere __________. #29 What instrument measures wind velocity? #30 In the Southern Hemisphere winds in a low pressure system rotate in a __________.

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