Owing to the greater girth of a ship amidships than at the ends，certain strakes are dropped as they approach the bow and stern to reduce the amount of plating at the ends. These strakes are called（）.

The strake on each side of the keel is called a（）.

Buckler plates are（）.

Pollution regulations require that each scupper in an enclosed deck area have a（）.

Ship’s steering gear refers to（）.

In vessel construction，a greater number of watertight bulkheads results in（）.

Gross tonnage indicates the vessel’s（）.

In vessel construction，the garboard strake is（）.

On a ship，the deck stringer is the outboardmost deck（）.

The purpose of cant frames in steel vessels is（）.