Electric cargo winches have an overload safety device which normally cuts the current to the winch motor（）.

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

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

Fuel oil tank vents are fitted with a screen which will stop（）.

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

Damaged bulkheads often take a permanent set which is independent of the panting or bulge caused by water pressure. To control this，you should（）.

The term strake is used in reference to（）.

In vessel construction，the garboard strake is（）.

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（）.

Forecastle deck is located in the ship’s（）.