Available in Stainless Steel the development of the Retractable Propulsion unit started in 2004 as a request for the ABN-Amro racing yachts, participating in the Volvo Ocean Race (VOR). The idea was to have as less resistance under the waterline as possible; the idea of the Retractable Propulsion Solution was born. At that time all the parts were made out of stainless steel. After a successful race, the main issue for the next model was saving weight. After an extensive period of design and engineering, Amartech introduced the RPS made out of titanium and with the propeller made out of Carbon for the racing yachts participating in the VOR 2008 – 2009. In the meantime, the Amartech RPS has been adapted by many racing yachts as well as by leisure sailing yachts and sailing catamarans striving for the best possible sailing performance.