Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG General Navigation (Set 10)
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Question 1 of 30
The annual change in variation for an area can be found in __________.
Browse Questions in Set 10
30 MCQs #1 The annual change in variation for an area can be found in __________. #2 The luminous range of a light takes into account the __________. #3 How is a navigation light identified on an Army Corps of Engineers navigation map? #4 A lighthouse is 120 feet (36.6 meters) high and the light has a nominal range of 18 miles. Your height of eye is 42 feet (12.8). If the visibility is 11 miles, approximately how far off the light will you be when the light becomes visible? #5 A lateral system buoy displaying a quick light __________. #6 A safe water mark may be __________. #7 A preferred-channel buoy will show a __________. #8 A lighted preferred-channel buoy may show a __________. #9 Which buoy is NOT numbered? #10 When trying to sight a lighthouse you notice a glare from a town in the background. The range at which the light may be sighted due to this glare is __________. #11 On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. The red sector __________. #12 Preferred channel buoys indicate the preferred channel to transit by __________. #13 In the U.S. Aids to Navigation System, red and green horizontally-banded buoys mark __________. #14 You wish to measure the distance on a Mercator chart between a point in latitude 43°30'N and a point in latitude 40°30'N. To measure 30 miles at a time, you should set the points of the dividers at __________. #15 Red lights may appear on __________. #16 As you enter a channel from seaward in a U.S. port, the numbers on the starboard side buoys __________. #17 If your vessel must pass through a draw during a scheduled closure period, what signal should you sound to request the opening of the draw? #18 Which buoy may be odd numbered? #19 Your vessel is leaving New York harbor in dense fog. As the vessel slowly proceeds toward sea, you sight a green can buoy on the starboard bow. Which action should you take? #20 When entering from seaward, a buoy displaying a composite group (2+1) flashing red light indicates __________. #21 When entering from seaward, a buoy displaying a single-flashing red light indicates __________. #22 When entering from seaward, a buoy displaying a single-flashing red light indicates __________. #23 When outbound from a U.S. port, a buoy displaying a flashing red light indicates __________. #24 If your vessel were proceeding down river (descending), a green square marker with a green reflector border on the right bank would be a __________. #25 As your vessel is heading southward along the east coast of the United States, you encounter a buoy showing a red flashing light. How should you pass this buoy? #26 "Proceeding from seaward" for the purpose of the direction of buoying offshore, lateral system buoys would be proceeding __________. #27 If the main channel under a bridge is marked with lights of the lateral system the adjacent bridge piers should be marked with __________. #28 You are steaming in a westerly direction along the Gulf Coast. You see ahead of you a lighted buoy showing a red isophase light. Which action should you take? #29 Which buoy may be even numbered? #30 Which buoy may be odd numbered?
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