If at any time the officer in charge of the navigational watch is to be relieved when a manoeuvre or other action to avoid any hazard is taking place,（）.

Which word indicates color variation in the characteristics of a light?（）

What is the female section of a tool joint called? （）

You are standing the wheelwatch on entering port and the Master gives you a rudder command which conflicts with a rudder command from the Pilot.What should you do（）.

You are standing the wheelwatch when you hear the cry，“Man overboard starboard side”.You should instinctively（）.

The Master to prosecute all voyages with the utmost（）and to render customary assistance with the Vessel’s Crew.

What is the BEST conductor of electricity?（）

When the pilot is embarked he or she（）.

You have orders to drop off a barge loaded with propylene oxide at a fleet.In doing so，you must ensure that（）.

You are a watch standing mate and have come to the bridge to relieve the watch while underway at sea.The watch should not be transferred（）.