First

Guess who was first to do a foiling gybe on SLINO...?

Guess who is owed a rum...?

Started out with 20 knots today so decided on the chicken rig. Markla was first but had a couple of big crashes early with a tangled wand not working properly. Ended up being about 12 knots by the time we were off the water. The chicken rig still faired reasonably well in the lighter wind except for trying to stay deep downwind, that was a bit of an effort but to be expected.

Narkla hit bottom, hard, while going into a tack on foils. Water was only about thigh deep...doh! No major damage (slight chip on one tip) but these foils of Al's are really taking a beating well. They've hit bottom at pace a number of times. Bit of a drag to get back to deeper water only to have some shunt jetskier spray me from within a boat length, TOOL!

Still lacking a bit of height so the plan is to add a little AOA to the mainfoil and see what happens.

schwinge!

http://www.schwinge.co.uk/

The Architecture of the Tetrahedron Super Yacht.

The design is instigated by the re-thinking of the form, superstructure and propulsion of the modern super-yacht into a radically simple enclosure and an elevated mode of travel above the water line.

The superstructure form is reduced to the absolute geometry of a Tetrahedron. A three-based pyramid consisting of 4 faces and 6 leading edges provides fundamental stability and enclosure. Its form produces a pure, precise, logical and mathematical ‘roof’ for which to connect to the hull assembly. Generally, simple forms are not known in ship and motor yacht construction through restrictions in ocean-going hull design.

Ocean Flying Triangle

The Tetrahedron would have the appearance at high-speed of ‘levitating’ over the water: a boat that can fly. This is produced by a HYSWAS hull - A Hydrofoil Small Waterplane Area Ship - that is comprised of a single retractable vertical strut onto a single submerged ‘torpedo’ hull. The vessel will lift out of the water at speed on side-mounted adjustable hydrofoils.

This hull form has two working ‘waterlines’ for its operation. At low speed the Tetrahedron sits gently onto three underbelly hulls. At high-speed the hydrofoils rotate on the lower submerged hull, causing the effect of mysteriously raising the triangle out of the water.

The concept design of this HYSWAS craft is based upon an existing hull design which has been developed by several companies, notably the Maritime Applied Physics Corporation in America, and has been proven by their technology demonstrator - ‘The Quest’ - in 1995.

An auto-pilot ‘fly-by-light’ system from the aviation industry would take control of difficult roll forces and maintain ‘foil bourne’ speed. This would also control pitch and heave.

Long distances are achievable with reduced out-of-water drag and stormy ocean conditions would incur virtually no slamming. Improved efficiency is driven by elevated hydrofoil propulsion and would be an inherent performance benefit of this type of design.

Long distance, smooth travel through rough water at high speed: the key performance attributes of this new motor yacht design.