- The Official Gemini 105MC and Telstar 28 Web - I find the boat to be a best of both worlds design in a smallish cruising catamaran.

Catamaran beam design. The transom 50Kg outboard hung in the middle instead of single round tube wanna use two tubes 60cm apart one on top of the other with welded. A word of caution. Instinctively you might think that fine ends would be faster as they would cut through the water better.

The commonly accepted way is to design longitudinal and transversal metacenter heights equal. The most important catamaran design hull shape factor is the Prismatic Coefficient Cp. Aft support E to crossbeam.

Consequently it would hardly do for bay sailing. It primarily depends on beam and individual hull buoyancy for stability. On my 44 Antares catamaran there is a heavy-duty gull-striker plate my term which might not be correct at the center of the cross beam and below the furler.

Designs from 14 - 63 are available for self-building in plyepoxy with very detailed easy to follow Plans often described as a course in boatbuilding. Design Catamarans is run by Andrew Craig who had his own first steel catamaran Gemini built in 1989 as a commercial fishing vessel which he skippered. Of sail area sailing hardware and rudders from a donor Hobie 18.

Make it too narrow and she cant carry sails enough to be a decent sailboat. 3The sliding beams are then pinned in place for trailering and the forward beam tube is bundled with the main sail and boom. The hulls are roughly 81 length.

The wider it is the more stabilityhowever at some point excessive beam becomes unmanageable. Wide hulls and a large overall beam will increase the overall righting moment of a catamaran. This plate runs parallel to the crossbeam and is double thickness where the forestay attaches to the plate.