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

Gross tonnage indicates the vessel’s（）.

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

Prior to magnetic particle inspection of anchor chain，the chain should be（）.

Shell plating is（）.

Holes in the bulwark，which allow deck water to drain into the sea，are（）.

A single fitting installed in a pipeline that either blanks off the pipe or allows a full flow passage of a liquid through the pipe is referred to as a（）.

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

The athwartship hull structural members of a ship are（）.