🔍 Key Concepts

• MARPOL rules on pollution prevention and oily waste disposal • What equipment is designed to process and reuse oil versus what is used to store and transfer waste oil • The difference between disposal ashore/retention on board and illegal discharges

💭 Think About

• Which choice clearly avoids putting any oily waste into public waterways or sewer systems? • Which option reflects a common, regulatory-compliant practice for handling dirty mixtures after tank cleaning in port? • Think about the purpose of an oily water separator versus long‑term waste oil management—are they meant for the same job?

✅ Before You Answer

• Eliminate any option that would send oil directly into sewers, harbor waters, or shore drainage • Ask whether the equipment named is meant for processing clean fuel or for handling contaminated waste • Confirm which option ensures the waste can be properly handled under pollution regulations (e.g., MARPOL Annex I)