Each fire hose coupling on a ship must have threads that meet the specifications of the（）.

During the course of a voyage，a seaman falls on the main deck and injures his ankle. The Master should submit a Report of Marine Accident，Injury or Death if the（）.

Each hand portable fire extinguisher on a ship must be marked with（）.

Fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to（）.

During which condition should the operator of a pedestal crane shutdown operations?（）

During the month of October the Sun’s declination is（）.

During which condition should the operator of a pedestal crane shutdown operations?（）

Each life preserver must be readily accessible to the person for whom it is intended while he or she is（）.

Fire protection regulations for towing vessels allow all of these types of fuel piping，EXCEPT（）.

During which condition should the operator of a pedestal crane shutdown operations?（）