How can i build a catamaran mould

hello all

Im looking for a fast way to build a catamaran hull
actually am bulding a small houseboat but and im lookin for a step by step tutorial but i havent found one ... and how would i know if it is hard enough to carry the wieght over it ?
thanx =)

 

...I do not know how big a small house boat is, but I do know you can make vey good and durable pontoons from PVC plactic storm water pipes, capped to suit.

They are the cheapest tubes that I know of.

 

its about 30 feet

 

...well yes, the 300mm storm pipes may do the job, work out the displacement (weight of the materials ) and you can easily see if the tubes have enough bouyancy to do the job. Bigger ones are available of course.

 

Build one hull and double your effort.