After the initial AMVER Position Report, sent by a vessel sailing foreign, subsequent Position Reports must be sent no less frequently than every __________.

Correct Answer: Option C — 48 hours

Under USCG Deck Safety, SOLAS Chapter III, and 46 CFR regulations, when addressing 'After the initial AMVER Position Report, sent by a vessel sailing foreign, subsequent Position Reports must be sent no less frequently than every', the mandated standard is: '48 hours'.