What is the free surface effect, in simple terms?

A. The pressure difference between an open deck and an enclosed space

B. The extra drag on a hull caused by marine growth below the waterline

C. The reduction in radar range caused by sea clutter in rough weather

D. The reduction in a vessel's stability caused by liquid moving freely inside a partially-filled compartment as the vessel heels

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

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

C. Testing should wait until cargo operations begin

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

A. Only the weather forecast for the next watch

B. The lunch schedule for the deck team

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

D. The cargo manifest for the next port

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