When a vessel is stationary and in a hogging condition，the main deck is under（）.

The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel’s displacement into the（）.

Lighter longitudinal stiffening frames on the vessel side plating are called（）.

Oceangoing dry bulk cargo vessels over 1000 GT must have approved combination-type fire nozzles at all（）.

On a vessel，the keel is the primary strength member of the lower hull form in which direction?（）.

In any case the draught of the vessel at the（）shall not be less than that which is necessary to obtain full immersion of the propeller.

In a transversely framed ship，the transverse frames are supported by all of the following EXCEPT（）.

Stanchions prevent the entire deck load on a ship from being carried by the（）.

A venetian vent or rice ventilator is used in stowage of which cargo?（）.

For cargoes（）grain meals，coal，ventilation is needed to prevent them（）spontaneous combustion.