SF 82 10 3 SF 175 mMOC LHBCB The size factor of the catamaran is defined as follows.

Catamaran hull thickness. In our hulls due to its proven strength and corrosion resistance. EU Size factor ZWD 006 LWL ZWD 072. The developed hull or Stressform tm compounded from sheet plywood has the most promise.

The only sensible approach is to buy plans that were specifically drawn for home-building by a reputable designer. The formula for catamaran hull speed is 134wetted length12. Also can this material endure without coating it.

Sept ans après avoir largué les amarres nous sommes toujours ravis de nos choix. One of the most flexible of the marine plys is Okoume or Gaboon so we will first consider working with that. But there are difficulties here too.

We have built 10 catamarans for our own use in the last 10 years ranging in size from 14 to 35 feet and using tortured ply foam sandwich and cold-moulded construction methods among others. Then later fill the pipe with left over resin. Hulls are only 130 cm wide allowing excellent hydrodynamic properties and with an exceptionally aerodynamic stealth shape of the whole catamaran hull lifting centerboards and a low total weight of 175 tonnes unloaded the UPWIND 50 ECO will be able to achieve significantly higher sailing speeds than competitive catamarans.

In creating a chine hull first we draw it by hand adjusting the limits. We shall discuss this question of hull flying further in Chapter 4. We use no less than a full 14 of 5086 marine-grade aluminum plate.

The beam of any catamaran hull intended to be built using tortured ply will depend on the thickness and type of plywood to be used. Solid GRP is thin typically a 30ft catamaran hull need only be a few mm say 316in thick to have enough STRENGTH after all GRP is as strong as steel for a given thickness. So you need to use either a number of bulkheads and stringers or a cored hull.