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

One function of a bulwark is to（）.

The antennas of the trucks on deck are not fitted（）.

Regulations require that access to a cargo pumproom in a tanker carrying grade D liquid cargo，shall be（）.

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

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（）.

To determine the weight capacity of a deck in a cargo hold，you would refer to the（）.

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

The riding pawl is（）.

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