At least（）radar transponder shall be carried on each side of every cargo ship of 500 gross tonnage and upwards.

As you hold a piece of manila line vertically in front of you，the strands run from the lower left to the upper right.Which type of line is this（）.

A.Right-hand laid
B.Cable-laid
C.Sennet-laid
D.Water-laid

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An intermediate spring is（）.

A.Fitted in each leg of the towing bridle
B.Generally located between the “fishplate” and the main towing hawser
C.Secured at the “H” bitts
D.Usually made of manila hawser

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