This cat is a plywood/glass/Epoxy composite construction. Very light, so the biplane rig can work on all directions of the wind
A "somewhat" different KD 860. The boat is lengthened to 10 m and sports a junk rig biplane rig
Four Twintex hulls and a biplane rig
Four Hulls and a biplane rig, Hulls made from Twintex