Foil assist technology is unique in that it load shares between foils and the hulls for an optimal self correcting dynamic. The foils carry typically 40% of the vessel's displacement and up to 75% in special cases thus allowing the hulls  to be of lower volume which greatly reduces drag and improves sea keeping. 

Efficiency, Sea-Keeping, Low Wake Wash and Emissions make up the core values of the technology and can add substantial benefits to the users of the system. Through lower drag on the underwater sections of the vessel, an increased efficiency is realized which results in lower propulsion requirements, reduced fuel consumption and a lighter vessel. In fact HSLC rules such as Lloyds SSC allow a substantial reduction in bottom pressure for a foil assist vessel and this alone will both improve overall fuel economy as well as reducing build costs.
Through the inherent dampening effect the hydrofoil-wings provide to the vessel, a much smoother ride is experienced. This enables the vessel to operate at a higher average speed in rough and unpredictable seas as the occupants are the limiting factor. Due to the lower resistance and propulsion power the vessels have reduced wake wash signature which is beneficial for waterways that have restrictions and limitations on wave wash. The foil assist cat is the optimal form for this application when speeds in excess of 30 knots are required.
  • OPERATOR FRIENDLY : No special knowledge or skills required to operate. The foils are robust and passive and respond to normal trim tab movement. 
  • SEA KEEPING : Reduced vertical accelerations in the order of 50% for improved passenger comfort and reduced scantlings
  • WAKE/WASH: In critical wake wash applications the Hysucraft system is the clear winner due to the wave cancellation effect between the hulls and foils
  • EFFECIENCY: Effeciency is characterized by +30% reduction in fuel burn at operating speeds. As well lower power requirements for equivalent speeds results in liughter. smaller engines and increased range.
  • STABILITY: The catamaran hull form provides higher initial stability so allowing slender hulls for lower resistance and improved passenger comfort
  • NET COST: Expect a total project cost increase of 5-8% with no additional costs in the life of the vessel
Scott Jutson, Jutson Marine Design, Foil assist cats, hydrofoil
foil assist cats, FASTcc

Prof. Dr._Ing K.G.W. Hoppe is a Registered Professional Engineer and studied Naval Architecture at the Techinical 
University in Berlin, Germany (TU-Berlin). While being a lecturer in Marine Engineering at the University of Stellenbosch
​he developed and patented the “Hysucat” and “Hysuwac” as a result of various research projects conducted in Germany and South Africa over the past four decades.

​Prof. Hoppe developed the theoretical background needed for foil assisted craft and designed research facilities (Towing tank, Circulating tank, Cavitation tank) to be used in conjunction with teaching which allowed the backup of theoretical results by ship model tests. Many towing tank  test series in research and for design applications gave valuable backfeed data for the practical designs of the more than 300 Hysucats on the sea from 1982 to 2002 which have shown up with speed improvements of over 40% in many cases.
Gunter Hoppe, FASTcc, foilassistcats

Scott has over 30 years experience in the design of high performance craft, both sailing and power,in both Australia and the US . He pioneered the now standard semi displacement catamaran hull form and is a leader in the design of high speed assymetric catamarans in both alloy and composite.

Scott's designs have won many major ocean races including the BOC Around The World Race and the Sydney to Hobart. He is a graduate of the Landing School of Design ('85) and a 32 year member of the Society of Naval Architects and Marine Engineers (SNAME)

Cory has been most well known in the industry as a partner in Armstrong Marine, where he managed the construction of over 1200 vessels for the leisure, commercial, government and sport fishing sectors. In 2015 he formed his own company, Armstrong Consolidated, LLC (parent company of ACI Boats and Gold Star Marine), so he could fulfill his vision of building a unique line of recreational welded aluminum boats in the 24’ to 60’ range.