Where, due to the arrangement of the vessel, lifejackets may become inaccessible, additional lifejackets shall be carried __________.

Correct Answer: Option C — as determined by the OCMI

Under 46 CFR lifesaving equipment provisions, when vessel arrangements render standard lifejacket locations inaccessible, additional lifejackets must be provided in quantities specifically determined by the Officer in Charge, Marine Inspection (OCMI) to ensure full crew safety.