Chartwell Marine has announced the launch of its first offshore energy support vessel (OESV) with hydrofoils, in partnership with marine design & engineering consultancy, BAR Technologies (BAR Tech).Seacat Sceptre, built at the Diverse Marine yard in Cowes, Isle of Wight, for OESV operator, Seacat Services, will now undergo sea trials prior to its handover. Hydrofoils, re-popularised and matured as a technology in high-end yacht racing, lift the hull in the water in transit to reduce frictional resistance. The Foil Optimisation and Stability System (FOSS) is developed and patented by BAR Technologies. FOSS reduces hull resistance by positioning the lifting foil near the transom and controlling the running trim to ensure the hull is operating at its most efficient trims across the speed range. As well as contributing a 30% improvement in energy efficiency through wake reduction, FOSS improves seakeeping and handling through general motion damping, active roll and trim response, and improved manoeuvrability and stability in varying sea conditions.
