CURRENT WORLD RECORD HOLDERS*,
ATTEMPT THE AROUND UK CHALLENGE IN A
WAVE PIERCING RIGID INFLATABLE BOAT

"After thousands of miles spent in conventional Rib's and hundreds of pounds spent at the Chiropractor, myself Jon Aldiss, and Simon Sanderson decided to build a unique new craft to enable us to travel fast and comfortably in sea states that would slow a conventional R.I.B."

After getting their heads together and discussing what design elements were required to travel as fast as possible for long distances and still be able to walk when they got ashore, Simon designed the craft with a fine wave piercing bow to reduce the pitching moment, he gave it a very deep 'V' to soften wave impacts with a relatively narrow beam allowing the craft to pierce the sea with minimal drag. Captive tapered tubes extend from the 'hard' bow to the stern with an open transom that allows shipped water an easy exit. The sponsons act as buoyancy and also to keep water on the deck, (holding that area of the craft down as it makes its way to the open transom.) The air trapped between the sponsons in the bow area also helps to blow the top out of the wave as the craft passes through. The Boat has been named Kali (goddess of dissolution and destruction)

Kali was constructed by Simon and Jon in Simon's composites workshop at Brancaster Staithe over a two year period; everything was made 'in house' apart from the engine propeller and electronics.
3 outer skins and 2 inner skins of SE 84LV intermediate modulus carbon pre-preg, sandwich a 14mm Nomex core constructed on a 9m x 1.2m tooling table designed and built in-house, after vacuuming and curing producing flat panels and when twisted, shaped panels. The hull was then assembled from a kit of parts.

*Subject to RYA and UIM approval and ratification

fine wave piercing bow


the 1/5th scale working model


Gas Turbine Helicopter engine