Doğru Cevap: 36 months

Açıklama: "The Master must maintain the Oil Record Book on board for at least 36 months" because it is a regulatory requirement to ensure compliance with the International Convention for the Prevention of Pollution from Ships (MARPOL) and the International Safety Management (ISM) Code, which demands accurate record-keeping for at least 36 months to track oil cargo operations and respond to any potential pollution incidents.