Why is it good practice to carry a spare set of fuel filter elements and know how to change them, even on a well-maintained engine?

A. Fuel filters never need changing outside of a full service by a professional

B. A partially blocked filter (from contaminated fuel, diesel bug, or tank sediment stirred up in rough weather) can starve the engine of fuel at an inconvenient moment, and being able to swap a filter and bleed the system yourself can be the difference between a short delay and being stranded

C. Spare filters are only useful for engines over 5 years old

D. Filter changes are illegal to perform without a qualified marine engineer present

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