Thin water tunnel hull design. recently, i put up an informative article on two, economy jonboats; swamper and swamp king: http://lunadadesign.net/swamper-and-swamp. Design software: 3dboatdesign (cad ship, yacht and boat design software) aerohydro (marine design and modeling software and services) aerologic (lofting, simulation. My first o.s.s. attempt: this design of june of 1999 was my first attempt at designing a one sheet boat with more capacity (holding an adult and a kid) than herb.