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单选题
When are fore and aft draft readings required to be entered in the unofficial logbook of a ship? （）
A
Once a day
B
Once a week
C
Prior to getting underway
D
Only when entering waters of different density
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When are fore and aft draft readings required to be entered in the unofficial logbook of a ship?A.Once a dayB.Once a weekC.Prior to getting underwayD.Only when entering waters of different density
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A short raised deck above the main deck at bow is called the（）.A、fore deckB、fore quarterC、aft quarterD、forecastle deck
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单选题Prior to getting underway，the Master or person in charge of a vessel must（）.A
conduct a fire drillB
conduct a boat drillC
log the fore and aft draft marksD
test the emergency generator
考题
单选题前后挽牢! （）A
Make fast fore and aft!B
Be ready to let go!C
Send aft breast line ashore!D
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考题
单选题Draft readings shall be considered as（）in the draft survey report．A
incoming dataB
working dataC
outgoing dataD
new data
考题
单选题The mean draft of a ship is the draft（）.A
midway between the forward and aft draft marksB
at the center of flotationC
at the load lineD
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单选题A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°. Which action should be taken to remove this error during compass adjustment?（）A
If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should add some magnets.B
If the blue ends of the magnets are aft you should lower the fore-and-aft trayC
If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should reverse the magnetsD
If the blue ends of the magnets are forward，and the fore-and-aft tray is at the bottom，you should add some magnets
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单选题A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°.Which action should be taken to remove this error during compass adjustment（）.A
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单选题船前后备好撇缆！（）A
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单选题When adjusting a magnetic compass for error，a deviation table should be made（）.A
before correcting for any deviationB
after correcting for variationC
after adjusting the fore-and-aft and athwartships permanent magnetsD
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考题
单选题A cofferdam is（）.A
any deck below the main deck and above the lowest deckB
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