🔍 Key Concepts

• MARPOL 73/78 Annex I regulations on oil pollution prevention certificates • What the International Oil Pollution Prevention (IOPP) Certificate actually certifies • The difference between domestic (coastwise) trade and international voyages under MARPOL

💭 Think About

• Ask yourself: Is the IOPP certificate a domestic U.S. document, an international convention document, or can it serve as both? • Consider whether MARPOL requirements depend on the type of cargo, the ship’s size (like 30,000 DWT), or where the ship trades. • Think about how MARPOL applies when a ship trades between countries that are parties (signatories) to the convention versus when it trades only within one country.

✅ Before You Answer

• Verify when an IOPP certificate is required: is it tied to international voyages under MARPOL, or to any tankship operation regardless of route? • Check whether the nature of the cargo alone (e.g., being listed in MARPOL) is what triggers the certificate requirement, or if it is more about ship type and voyage. • Confirm how MARPOL defines an "international voyage" and whether calling at ports in another MARPOL signatory country affects the certificate requirement.