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SP Awarded Composite Contract for US M80 Stiletto Vessel

29 October 2004

SP has been contracted by M Ship Co. to undertake structural engineering and supply all of the composite materials for the double M-hull of the M8 0Stiletto.

The M8 0 Stiletto is a revolutionary vessel for the U.S. Department of Defence, designed to provide remarkable stability, smooth ride quality and minimal wake at high speeds.

The project will be carried out at the Knight & Carver Yacht Centre in San Diego, California.

The structural engineering, including concept development, Finite Element Analysis and laminate schedule will be managed by SP’s UK-based engineering office, renowned for its work on other military and commercial vessels, such as the VSV (Very Slender Vessel), U.S. Marine Assault Craft, British Ministry of Defence patrol boat, the Swedish Defence Ministry (FmV) Patrol Boat, the Dutch Navy Patrol Boat and the Royal National Lifeboat Institute (RNLI) rescue vessels, where SP has provided engineering consultancy and materials for over fifteen years.

“The M80 Stiletto has a radical hull form, so our approach to the engineering will need to match this, with innovative, ‘out of the box’ solutions,” says Alex Shimell, Engineering Manager at SP. “But with a team of over 24 experienced structural engineers from marine, aerospace and automotive backgrounds, not only located in the UK, but also in the USA, France and Australia, we thrive on working with revolutionary thinkers such as M Ship Co.”

In addition to providing structural engineering consultancy, SP is supplying the advanced composite materials for the M80 Stiletto. Although the final laminate schedule will be determined by the engineering analysis, it will be based on SP’s patented SPRINT system with carbon fibre in combination with Core-Cell structural foam. Ampreg 22 laminating epoxy will also be used for the hull bottom and secondary bonding.

Epoxy has been used in many other high performance marine projects such as America’s Cup yachts, as well as aerospace and Formula 1 applications—all of which demand high mechanical properties in terms of strength, stiffness, toughness and fatigue resistance.





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