A “check” line is（）.

A continual worsening of the list or trim of any floating ship indicates（）.

A chart position enclosed by a square is a(n)（）.

A crew member reports that the high-pressure alarm light of a low-pressure CO2 fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that（）.

A tonnage tax is levied according to the（）.

A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain（）.

A “l(fā)iner” in riveted construction of a vessel is a(n) （）.

A “full service” Loran-C receiver will provide（）.

A “figure eight” knot is used to（）.

A common class of wire rope used for mooring is the 6x19 class. What does the 6 represent?（）