Compartmentation of a SWATH vessel

Thank you for your concern. Right now my aim is to get the hull form and design the compartmentation myself then do the stability test. Let say, if I want to use my rhino drawing, and set my draft to 2.5 meters, how am I suppose to define the hull before I start to do the stability test.

 

You cannot do anything without having a set of Lines first! Without a set of Lines to begin with, you cannot do any design work.

You're going about this back to front.

 

Try this model. I have been able to calculate the hydrostatic and even the flooded lengths. (Not needed any set of lines for these calculations)