In accordance with the international MARPOL Annex I regulations and the federal regulations in 33 CFR Subchapter O (Pollution), specific machinery space operations onboard all ships of 400 gross tons or above other than a tanker must be documented in an Oil Record Book. Which of the listed machinery space operations must be documented in the Oil Record Book?
• MARPOL Annex I – Oil Record Book (Part I – Machinery space operations) requirements for ships of 400 GT and above • Difference between oily mixtures from machinery spaces and clean ballast / seawater operations • Requirements in 33 CFR Subchapter O that mirror MARPOL for recording transfers and disposals of oil, waste oil, and sludge
• Ask yourself: Which option clearly involves oil or oily residues being handled, transferred, or disposed of, rather than just seawater or clean ballast? • Look at each choice and decide: Is this an operation that could create or move an oily mixture from machinery space (like bilge water, fuel, lube oil, or sludge)? • Which type of operation does MARPOL Annex I specifically say must be recorded: routine movement of clean ballast water, or any transfer/discharge of waste oil/sludge/oily mixtures to sea, shore, or other tanks?
• Verify in MARPOL Annex I, Oil Record Book – Part I (Machinery space operations), the listed categories that must be recorded (e.g., ballasting vs. discharge of oily residues). • Check whether clean ballast or seawater (with no oil) from double bottom tanks is normally listed as a recordable machinery space operation. • Confirm that any transfer or discharge of waste oil, sludge, or oily bilge water to a reception facility or overboard is explicitly mentioned as requiring an Oil Record Book entry.
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