Design No. 6709
Carbon Jet 685
Design 6709 is preserved in the Alfred Mylne archive under the original designation Carbon Jet 685. The design is represented by fifteen drawings held within the collection. Limited information remains available regarding the vessel's specifications, construction details, or subsequent history. This entry reflects the current state of the archival record.
Original Drawings · 15 sheets
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Carbon Jet 685 Inspired by and for the new Palmer Johnson SuperSport 48, this yacht tender is specially designed to meet the owners very exacting requirements of speed, comfort and safety. The new Mylne Carbon Jet 685 will carry guests and crew in exquisite luxury and comfort. This new design from the Mylne drawing board has now been delivered by Patterson Boatworks in Cumbria, England. Construction is all carbon to give an incredibly strong and lightweight hull. The hull features the same wave piercing concept as the mothership giving a smooth ride, while the optimised hull shape aft will insure excellent high speed planing performance. The bow flare will keep the passengers dry, and in the event of rain a cabin hood can be fitted. The twin 144bhp Steyr diesels drive Castoldi Waterjets giving the boat excellent manoeuvrability. Control is via electronic throttle levers and wheel, with the latest state of the art dual redundant touchscreens from Raymarine providing all navigation, entertainment and engine monitoring functions. Design Mylne Naval Architecture Mylne Engineering Mylne Builders Patterson Boatworks, Cumbria, UK Specification Length 6.85m / 23ft Beam 2.44m / 8ft Draft 0.4m / 1ft 4in Weight 1300kg/ 2860lbs (lightship) Crew 2 Crew + 8 Passengers RCD Cat C Motor 2 x Steyr 144 Diesel (max output 288bhp) Propulsion 2 x Castoldi Jet05 Fuel 120 Litres Diesel Speed 35+knots Water 20 Litres for showering
Historical Context
Alfred Mylne's design practice spanned several decades, producing work across varied vessel types and sizes. Design 6709 represents one of many designs documented within the archive. The designation 'Carbon Jet' may refer to a commercial or project name, though its significance and context remain undocumented in the present record. The survival of fifteen drawings indicates the design received formal development within Mylne's office, though whether the design proceeded to construction or remained a proposal is not established by available evidence.