What is the purpose of a Hydrostatic Release Unit (HRU) fitted to a liferaft?

A. It is a pressure gauge that shows how full the gas cylinder is

B. It automatically releases the liferaft from its cradle (and can trigger inflation via the painter line) when the vessel sinks to a certain depth, even if no one has manually launched it

C. It prevents the liferaft from being launched accidentally in port

D. It inflates the liferaft automatically once it senses a person climbing aboard

A. Nothing — a test lift can proceed immediately after repairs

B. Testing should wait until cargo operations begin

C. The area within the grab's swing radius should be cleared of personnel before the lift

D. Only the crane operator needs to be aware the lift is happening

A. Who must remain clear of the exclusion zone while the lift takes place

B. The lunch schedule for the deck team

C. Only the weather forecast for the next watch

D. The cargo manifest for the next port