Why does antifouling paint need reapplying periodically, and what determines roughly how often?

A. Antifouling works by slowly releasing biocides (or, for some types, gradually eroding) to deter marine growth — its effectiveness diminishes over a season or more as the active ingredient depletes, so it needs reapplying periodically, with the exact interval depending on the paint type, local water conditions, and how much the boat is used versus left static

B. Antifouling is a one-time application that lasts the lifetime of the hull

C. Antifouling only needs reapplying if the hull colour visibly changes

D. Modern antifouling never needs reapplication once cured

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