Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG General Navigation (Set 2)
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Question 1 of 30
White and orange buoys, if lighted, show which color light?
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30 MCQs #1 White and orange buoys, if lighted, show which color light? #2 Two navigational hazards are located near to each other, but each is marked by an individual cardinal buoyage system. The buoys of one cardinal system may be identified from the other system by __________. #3 Before a magnetic compass is adjusted certain correctors must be checked to ensure that they are free of permanent magnetism. These correctors are the __________. #4 On a transpacific voyage, you receive a message from your vessel's operators saying that your vessel has been consigned to Naval Control of Shipping. Further information is contained in __________. #5 What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism? #6 What indicates a buoy that should be left to port when entering from seaward? (U.S. Aids to Navigation System) #7 The datum used for soundings on charts of the East Coast of the United States is __________. #8 Mean high water is the reference datum used to measure __________. #9 At McAlpine L & D, normal upper pool elevation is 420.0 feet MSL, equal to 12.0 feet on the upper gage. The vertical clearance at the Clark Memorial Highway bridge is 72.6 feet above normal pool. What is the clearance if the gage reads 27.2 feet? #10 The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean __________. #11 When approaching a lock entrance, the visual signal displayed when a single lock is ready for entrance is a flashing __________. #12 A buoy having red and green horizontal bands would have a light characteristic of __________. #13 Variation in a compass is caused by __________. #14 Safe water buoys may show ONLY __________. #15 Your chart indicates that there is an isolated rock and names the rock using vertical letters. This indicates the __________. #16 A triangular daymark would be colored __________. #17 While steaming north of the Irish coast, you sight a buoy which shows the light rhythm shown in illustration D028NG below. How would you pass this buoy? #18 A white buoy with an orange cross within a diamond marked on it indicates __________. #19 You are entering an east coast port and see a buoy with a yellow triangle painted on it. What does the symbol indicate? #20 You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow triangle painted on it. Which statement is TRUE? #21 Naval authorities would NOT give orders about which of the following, when the vessel is under control of the Naval Control of Shipping Organization? #22 What volume of the Coast Guard Light List is used for the Mississippi River system? #23 A special mark (yellow buoy), if lighted, may exhibit which light rhythm? #24 A general chart could have a scale of __________. #25 Which statement about the Flinders bar of the magnetic compass is CORRECT? #26 At the establishment of Naval Control of Shipping (NCS), ships at sea will __________. #27 On a voyage along the coast of France, you sight a buoy with the top marks as shown in illustration D026NG below. How should you steer your vessel? #28 Under the IALA-A Buoyage System, a green spar buoy with a triangular topmark would indicate that the buoy __________. #29 You are steaming along the coast of Ireland in the Irish Sea. You sight a lighted buoy with a white flashing light showing a group of two flashes. The buoy indicates you __________. #30 In both regions of the IALA buoyage system, which topmark shown in illustration D022NG below is used on a special mark?
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