单项选择题 Each liferaft，which does not have an indicated maximum stowage height indicated on the liferaft，must be（）.

单项选择题 Each lifebuoy shall be marked in block capitals of the Roman alphabet with（）of the ship.

单项选择题 As a vessel sinks to a depth of 15 feet，the hydrostatic trip releases the liferaft container from its cradle by（）.