What is an advantage of having wire rope with a fiber core over that of a wire rope of the same size with a wire core（）.

The safest procedure used to rig a guy and preventer is to have the guy（）.

The size of wire rope is determined by the（）.

When attempting to free an anchor jammed in the hawsepipe，the simplest method of freeing it may be（）.

SOLAS is the abbreviation of（）.

In a twin screw ship going half-ahead，both screws turning outboard and the rudder amidships，no current or wind，the vessel will（）.

When rigging a stage，the standing part should be fastened to the horns of a stage with which of the following hitches（）.

What are the two main types of stud link chain（）.

What equipment is customarily used when seamen are working on a stage rigged over the side of a vessel（）.

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（）.