An obstruction on a helodeck is any object that might present a hazard to the（）.

Cargo transfer operations on a tank vessel need NOT be stopped when（）.

All ships（）suspected infectious disease on board should radio information to Port Health Officer.

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

A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should（）.

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

Between 1830 hrs and 1850 hrs this day，strong gusty winds（）by my vessel，in consequence of which the vessel’s four mooring lines were broken.

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

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

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