A “Mediterranean moor” should be used when（）.

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

A tonnage tax is levied according to the（）.

A celestial body will cross the prime vertical circle when the latitude is numerically（）.

A continuous watertight bulkhead on a ship is normally also 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 block and tackle is “rove to advantage”. This means that the（）.

A chart with a scale of 1:80，000 would fall into the category of a（）.

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

A casualty report of an intentional grounding of a ship is required under what condition?（）