In accordance with SOLAS, which of the following best describes the obligation of the Master concerning cargo hold watertight doors?

Correct Answer: Option B — the Master shall ensure that the doors are secured and an entry is made in the log book prior to departure

SOLAS Chapter II-1, Regulation 22 requires the Master to ensure that all watertight doors are secured before the vessel leaves port. A logbook entry is mandatory to document that these critical closures have been verified, ensuring the vessel's watertight subdivision is intact for the upcoming voyage.