During a man overboard search, initial efforts near the last known position are unsuccessful. What search pattern might be used to expand the search systematically, and what is its purpose?

A. Search patterns are only used by aircraft, never by surface vessels

B. Searching is unstructured — vessels simply move toward any area that "feels right"

C. Patterns such as an expanding square search (starting at the datum and spiralling outward in increasing legs) or a sector search (a series of legs radiating from the datum at different angles) provide systematic coverage of an area around the last known/estimated position, maximising the probability of detection while accounting for search asset capabilities and drift since the person entered the water

D. A single straight-line search along the original course is always sufficient

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