单选题 sends a radio signals from the bottom of the ship to sea-bed, from which it is reflected.

A、 The marine sextant
B、 The chronometer
C、 The echo sounder
D、 The radar
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单选题 Forces within a vessel have caused a difference between the starboard and port drafts. This difference is called .

A、List
B、 heel
C、 trim
D、 flotation

单选题 Freeboard is measured from the upper edge of the

A、 Bulwark
B、 deck line
C、 gunwale bar
D、 shear strake

单选题 Dry cargoes are those commodities that

A、 Never leak but may be spoiled by leakage
B、 Sometimes leak and damage themselves
C、 Often leak and damage other cargo
D、 Neither leak nor will be damaged by leakage

单选题 It is customary in shipping practice to quote freight rates weight or measurement according to ship’s option.

A、 on the basis of
B、 as a result of
C、 arise from
D、 come into being

单选题 Which refers to the living place for seafarers?

A、 poop
B、 store room
C、 accommodation
D、 saloon

单选题 provides strength and storage space of fuel, lubricating oil,fresh water, salt (ballast)water and potable water.

A、 The double bottom
B、The cofferdam
C、The bridge
D、 The superstructure

单选题 The locker will as long as your ship is here.

A、be kept sealed
B、be released from being sealed
C、be kept signed
D、be released from being signed

单选题 is a round-shaped underwater part in the front of the ship. The purpose is to create less friction with water so that the ship moves more easily.

A、 The bulbous bow
B、The anchor
C、The bow thruster
D、 The propeller