Water line

I some hulls aprox 31 ft How do i figure out the wateline. I read another builders story ( not here ) when he made his floor he was constantly at a slight angle. Here is a link to the hulls http://catamaran.connpro.com/services.html

Thanks

 

You need to know what the whole boat and whatever extra stuff like passengers will be on board will weigh From that weight and the density of the water you want to sail on, you can calculate volume.

Work out the height at which you get the same volume in your hulls, and you have your waterline..

Good luck

Alan