When are MARPOL certificates usually generated?

• A. Just before the first voyage
• B. After each port call
• C. During the construction of the ship by classification societies and other recognized organizations
• D. When the ship is decommissioned

Answer: (C)

MARPOL certificates are generated as part of the formal process to verify a ship meets pollution prevention requirements, and this happens during construction. Classification societies and other recognized organizations carry out surveys of the vessel’s design and construction to ensure it complies with MARPOL standards. Once the initial survey is completed successfully, the flag state issues the MARPOL certificates before the ship enters service. These certificates remain valid through specified periods and are renewed by periodic surveys, not created for every voyage, at port calls, or upon decommissioning. So the moment described—during construction by classification societies and other recognized organizations—is when these certificates are generated.