A.one all-round white light
B.sidelights and a stern light
C.only the outboard sidelight and a stern light
D.a masthead light，sidelights，and a stern light
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A.estimated position
B.assumed position
C.fix
D.running fix
A.rapidly improving weather
B.deteriorating weather
C.a severe low pressure system
D.fair weather and calm
A.L
B.N
C.T
D.Z
A.a code hoist to indicate Greenwich mean time to follow
B.the letter G
C.the letters GT
D.the letter Z
A.darkening，growing in size and forming an anvil top
B.that shows extensive vertical development
C.creating cold downdrafts that are felt on the ground
D.All of the above
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A schooner is a fore-and-aft rigged vessel with（）.
A vessel loads 5000 tons of manganese ore. The railroad cars that brought the ore to the vessel were previously loaded with iron ore so the ore is contaminated. The agent requests the Master to sign a Clean Bill of Lading and in return the shipper will give him a Letter of Indemnity. What is the best procedure to follow? （）
A ship having continuous closely spaced transverse strength members is（）.
A signal indicating Greenwich mean time would be preceded with（）.
A safety feature provided on all inflatable liferafts is（）.
A vessel would be referred to as “stiff” when the weight of the cargo is（）.
A single line of position combined with a dead-reckoning position results in a(n)（）.
A shepherd’s crook is used to（）.
A seaman may have all or part of his wages deposited by allotment to a bank or savings institution. Which of the following is NOT a requirement for this type of allotment? （）
A semisubmersible with a negative GM flops to an angle of（）.