Aquaculture Service Vessel
E4. Cruise, offshore energy and auxiliary/specialised fleetsDefinition
Vessel supporting offshore fish farms.
An aquaculture service vessel works open-water fish farms: delivering and grading feed, treating sea lice, washing nets, removing mortalities, and handling moorings on salmon and other marine cages. The class splits into well boats (live-fish carriers with circulating tanks for smolt transfer, grading, and bath treatment), feed barges and feed vessels, and smaller net-cleaning and service craft. Many carry crane and remotely operated vehicle support; larger units add dynamic positioning. The work falls under farm-siting and biosecurity rules rather than a single IMO convention, with welfare governed by national codes.
Source: FAO, The State of World Fisheries and Aquaculture (SOFIA); industry vessel-type classification (well boat, feed vessel, service craft)