What is the correct action if a lifejacket's automatic inflation mechanism (on an inflatable type) fails to activate on entering the water?

A. Wait for automatic inflation to eventually trigger, since manual intervention is not recommended

B. Manual and oral inflation are only available on lifejackets used by officers, not ratings

C. Use the manual inflation toggle/cord as a backup, and if that also fails, use the oral inflation tube to blow air into the bladder directly — every wearer should know all three activation methods before they are ever needed, not just rely on automatic inflation working every time

D. There is no backup option if automatic inflation fails — the lifejacket should simply be discarded

A. There is no requirement to check personal survival equipment individually — the safety officer checks it on behalf of the whole crew

B. Only once the first boat drill is scheduled, which may be several days after joining

C. Only senior officers need to confirm the location of survival equipment; ratings are shown only during drills

D. Immediately, as part of the mandatory familiarisation process before the vessel sails — every seafarer must know exactly where their personal survival equipment is stowed and confirm it fits and is in good condition, not wait for the first scheduled drill

A. Lifejackets should be worn under outer clothing to keep them protected from sea spray

B. Put on warm clothing first if time allows, then the lifejacket over the top (never under clothing), secure all straps including the crotch strap if fitted, and check the light and whistle are attached and functioning

C. Put the lifejacket on first, then add warm clothing over it for extra insulation

D. Only secure the chest strap — leg/crotch straps are optional and rarely needed in practice