Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG General Navigation (Set 30)
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Question 1 of 30
The database resulting from (1) the transformation of the electronic navigational chart (ENC) by ECDIS for appropriate use, (2) the updates to the ENC by appropriate means, and (3) the additional data added by the mariner, is called the __________.
Browse Questions in Set 30
30 MCQs #1 The database resulting from (1) the transformation of the electronic navigational chart (ENC) by ECDIS for appropriate use, (2) the updates to the ENC by appropriate means, and (3) the additional data added by the mariner, is called the __________. #2 The database information that should be shown when a chart is first displayed on ECDIS is the __________. #3 The level of database information which cannot be removed from the ECDIS display and consists of information which is required at all times in all geographic areas and under all circumstances is the __________. #4 Your radar displays your ship off center. As you proceed on your course, your ship's marker moves on the PPI scope while echoes from land masses remain stationary. What is this display called? #5 The time interval between successive wave crests is called the __________. #6 ECDIS must have the capability to preserve the record of the voyage track for the previous __________. #7 Aneroid barometers are usually calibrated to indicate atmospheric pressure in __________. #8 Which of the following must an ECDIS system be able to perform? #9 ECDIS must be able to perform all of the following EXCEPT __________. #10 What will cause the Electronic Plotting Aid (EPA) to emit a visual alarm, audible alarm, or both? #11 What option does an Electronic Plotting Aid (EPA) not have? #12 The passing of a low pressure system can be determined by periodically checking the __________. #13 Vessel required to have an Electronic Plotting Aid (EPA) must have a device to indicate the __________. #14 Air masses near the earth's surface __________. #15 Barometer readings in weather reports are given in terms of pressure at __________. #16 Your Electronic Plotting Aid (EPA) has automatic speed inputs from the log. Due to currents, the log is indicating a faster speed than the speed over the ground. What should you expect under these circumstances? #17 You are in the Northern Hemisphere and a tropical wave is located 200 miles due east of your position. Where will the wave be located 12 hours later? #18 In a microbarograph, the pen should be checked and the inkwell filled __________. #19 While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's fog horn 4 seconds after the signal was sounded. What is the distance to the shore? #20 When using the Electronic Plotting Aid (EPA) in heavy rain, which action should you take? #21 Electronic Plotting Aid (EPA) has which built in functions? #22 Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. The sky is overcast, and the anemometer indicates that the apparent wind is from 144° relative at 8 knots. You are on course 162°T at 15 knots. How should you encode group Nddff? #23 A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT __________. #24 What kind of pressure systems travel in tropical waves? #25 The speed of sound through ocean water is nearly always __________. #26 When operated over a muddy bottom, a fathometer may indicate __________. #27 Which factor has the greatest effect on the amount of gain required to obtain a fathometer reading? #28 Early indications of the approach of a hurricane may be all of the following EXCEPT __________. #29 The speed of sound in water is approximately __________. #30 Low pressure disturbances, which travel along the intertropical convergence zone, are called __________.
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