Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG General Navigation (Set 27)
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Question 1 of 30
What level of development of a tropical cyclone has a hundred mile radius of circulation, gale force winds, less than 990 millibars of pressure and vertically formed cumulonimbus clouds?
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30 MCQs #1 What level of development of a tropical cyclone has a hundred mile radius of circulation, gale force winds, less than 990 millibars of pressure and vertically formed cumulonimbus clouds? #2 A sextant having an index error that is "off the arc" has a __________. #3 The hurricane season in the North Atlantic Ocean reaches its peak during the month of __________. #4 Which type of cloud is among the most dependable for giving an indication of an approaching weather system? #5 When reporting wind direction, you should give the direction in __________. #6 You are underway on course 050°T and your maximum speed is 13 knots. The eye of a hurricane bears 100°T, 120 miles from your position. The hurricane is moving towards 275°T at 25 knots. If you maneuver at 13 knots to avoid the hurricane, what could be the maximum CPA? #7 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 __________. #8 Which cloud type is normally associated with thunderstorms? #9 A ship is on course 195° at a speed of 15 knots. The apparent wind is from 40° on the port bow, speed 30 knots. The direction and speed of the true wind are __________. #10 You are steaming west in the North Atlantic in an extratropical cyclonic storm, and the wind is dead ahead. According to the law of Buys Ballot, the center of low pressure lies to the __________. #11 In order to remove index error from a sextant, you should adjust the __________. #12 Swell is the rise and fall of the ocean's surface due to __________. #13 The index error is determined by adjusting the __________. #14 A source of an air mass labeled mTw is __________. #15 A marine sextant has the index arm set at zero and the reflected image of the horizon forms a continuous line with the actual image. When the sextant is rotated about the line of sight the images separate. The sextant has __________. #16 The best estimate of the wind direction at sea level can be obtained from observing the direction of the __________. #17 In order to remove side error from a sextant, you should adjust the __________. #18 When your vessel is on or near the path of an approaching tropical storm the __________. #19 A hygrometer is a device used for determining __________. #20 While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's fog horn 4 1/2 seconds after the signal was sounded. What is the distance to the shore? #21 In general, on how many radio channels will an automatic identification system (AIS) operate? #22 Wind direction may be determined by observing all of the following EXCEPT __________. #23 Chart information details to be used in ECDIS should be the latest edition of information originated by a government-authorized hydrographic office and conform to the standards of (the) __________. #24 Ascending and descending air masses with different temperatures is part of an important heat transmitting process in our atmosphere called __________. #25 Your radar has a beam width of 2°. The radar gyro bearing of the right tangent of an island is 316°. The gyro error is 1°E. Which true bearing should be plotted on the chart? #26 The direction of the southeast trade winds is a result of the __________. #27 The highest frequency of tropical cyclones in the North Atlantic Ocean occurs during __________. #28 A tropical storm is a tropical cyclone that generates winds of __________. #29 If your mercurial barometer reads 30.50 inches (1033 millibars) and the temperature is 56°F (13°C), what is the correct reading at 55°N, 150°W? #30 Above-normal tides near the center of a hurricane may be caused by the __________.
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