🔍 Key Concepts

• Oil Record Book requirements for MODUs under MARPOL Annex I (oil pollution) • When an Oil Record Book is required versus when it is exempt • Difference between having oil on board and being able to discharge oil or oily mixtures overboard

💭 Think About

• Ask: In which situation would recording oil transfers and discharges in a log not be necessary because such activities cannot occur? • Compare the options that describe certificates or voyages with the one(s) that change the physical ability of the vessel to pump oily mixtures overboard. • Consider: Does simply having equipment (like an oily water separator) or certificates increase or decrease the need for documented controls?

✅ Before You Answer

• Verify which condition makes it impossible to discharge oil or oily mixtures overboard from the MODU. • Check MARPOL-style logic: paperwork (certificates, books) is usually required when pollution could happen, not when it cannot physically occur. • Confirm that the correct choice removes the need to record oil discharges because there are no overboard oil discharges possible.