Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.

Each EPIRB required on an OSV shall be tested using the integrated test circuit and output indicator every（）.

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

Foam-type portable fire extinguishers are most useful in combating fires involving（）.

During the winter months，the southeast trade winds are（）.

During the day，a dredge will indicate the side on which it is safe to pass by displaying（）.

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

During the manufacture of line，yarns are twisted together in the（）.

During storm conditions on a ship，the mooring tensions should be adjusted so that（）.

Each hand portable，semi-portable and fixed fire extinguishing unit on a ship must be tested and inspected at least once every（）.