A helmsman receives the command “Right 15 degrees rudder.”The helmsman’s IMMEDIATE reply should be（）.

A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a（）.

Please supply 200 tons of fresh water（）my ship.

For the purposes of cargo oil containment，the fixed container under the manifold of an eight-inch loading line must hold a minimum of（）.

How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）

A fire pump may be used for other purposes if（）.

An inert gas system on a tanker should be used to（）.

A large basin cut into the shore，closed off by a caisson，and used for dry docking of ships is known as a（）.

A fixed carbon dioxide extinguishing system for a machinery space，designed WITHOUT a stop valve in the line leading to the protected space，is actuated by（）.

A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound（）.