Deficient oxygen content inside a chain locker can be detected with（）.

Corrosive liquids and acids should have which kind of label?（）

Deneb is found in what constellation?（）

Complete information on weather broadcasts throughout the world is contained in（）.

Coiling new rope against the lay，bringing the lower end up through the center of the coil，then coiling with the lay，in order to remove the kinks，is known as（）.

Cyclones that have warm sectors usually move（）.

Channel 13 is primarily used for ship to ship communication. Channel 13 is also authorized for（）.

Commercial ships or other persons or agencies requiring the assistance of Canadian Coast Guard icebreakers should first contact（）.

Day-shapes must be displayed（）.

Consideration should be given in planning for the mooring orientation in a new location so that in adverse weather a crane is available to off-load the supply vessel on what side of the unit?（）