The distance between rivets in a row is known as the（）.

When the period of beam seas equals the natural rolling period of a vessel，what will most likely occur?（）

Which statement is TRUE concerning hawser towing? （）

The time required to incline from bow down to stern down and return to bow down again is called（）.

The pitch of a propeller is a measure of the（）.

Which statement concerning an automatic towing engine is FALSE? （）

The principal action in changing from transit to survival draft in the event heavy weather threatens is（）.

The main reason a long towline is used during an oceantow is that（）.

Multi-year ice is the hardest sea ice and should be avoided if possible. It is recognizable because of what tone to its surface color? （）

Which characteristic is a disadvantage of a controllable- pitch propeller as compared to a fixed-pitch propeller? （）