The Gåsø Høvding, which is equipped to transport large volumes of fish as well as carrying out delousing, is indicative of one trend in the vessels being built to service aquaculture: size. Farm units themselves are becoming ever more ambitious in terms of volume, and the vessels that serve them have had to follow suit. Fuel efficiency was also a key consideration for Shetland-based Flugga Boats, which recently built six workboats for Grieg Seafood. The boats – which are made of aluminium with a high density polyethylene (HDPE) collar – are fitted with OXE diesel outboard engines, which combine economy with reliability and endurance. The OXE outboards not only save on fuel but extend endurance.