（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.

The ISM code is part of（）.

Berthing means bringing a vessel to her berth until（）.

Shipboard Emergency Drills must be carried out at least（）on board cargo ship.

（）is on the panel of radar.

How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）

When the wave period and the apparent rolling period are the same（）.

The company should establish and maintain procedures to control all documents and date which are relevant to（）.

Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.

A tide is called diurnal when（）.