Ship’s steering gear refers to（）.

Shell plating is（）.

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 platform that supports the derrickman when tripping pipe is called the（）.

The perforated，elevated bottom of the chain locker，which prevents the chains from touching the main locker bottom and allows seepage water to flow to the drains，is called a（）.

Freeboard is measured from the upper edge of the（）.

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

Grinding to eliminate shallow surface defects should be done（）.

The opening in the deck beneath the anchor windlass that leads to the chain locker is the（）.

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