Tankerman · MARPOL — ODME Limits
Under MARPOL Annex I, cargo-area oily discharge from a tanker underway is limited by the Oil Discharge Monitoring system to a maximum instantaneous rate of:
- A30 litres per nautical mile✓ Correct
- B300 litres per nautical mile
- C1 litre per nautical mile
- DUnlimited beyond 50 miles
Explanation
The ODME enforces a maximum of 30 litres of oil per nautical mile while en route, with a total-quantity limit (a small fraction of cargo) and minimum distance from land, in addition to the tank being underway. Discharges are logged in the Oil Record Book.
Authority: MARPOL Annex I
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