Marine Management Organisation
Vessel lists include details of administrative port, home port, port letters and number, vessel name, Registry of Shipping and Seamen number and overall length.
Within the lists there are details of the membership of a Producer Organisation (PO). This relates to those vessels recorded as fishing against the quotas allocated to the PO and are thus managed by the PO. The full membership of a PO can include additional vessels which are associated with a PO for other purposes (e.g. to benefit from local marketing agreements), but whose fishing activity is subject to constraints set by UK fisheries administrations rather than the PO, and thus any PO not involved in directly managing fishing activity is not included.
The spreadsheet below allows the calculation of a vessels gross tonnage.