Two factors determine if the MLC applies to offshore resource extraction or similar vessels (e.g., MODUs and dredgers) or vessels that are not self-propelled:
• is the vessel considered a ship under relevant national law/location of its activities. The MLC leaves this decision to states to refer to relevant national law or practice and court decisions to determine;
• whether it should be a ship covered by the MLC, 2006 depends if it navigates exclusively in inland waters or waters within or closely adjacent to sheltered waters or areas where port regulations apply.