The transfer process of fish or fish products at sea or in port, from one fishing vessel to either another fishing vessel — or to a vessel used solely for the carriage of cargo, for further transport. At-sea transshipments are of special concern in fishery management since, if not properly monitored, they can complicate the collection of accurate data and the traceability of product, creating a fertile environment for illegal, unreported, and unregulated fishing activities.
See also Illegal fishing, Unreported fishing and Unregulated fishing.