When must the Certificate of NumberRegistration paperwork be carried on board a vessel?

The Certificate of Number Registration paperwork must be carried on board a vessel whenever it is in operation on state waters. This document serves as proof that the vessel is properly registered and compliant with state regulations. Failing to have it on board can result in fines or penalties during inspections by law enforcement or regulatory agencies. It is essential for ensuring the vessel's legality while navigating waterways.