Marine design software. discuss / review software | free – maxsurf academic : multisurf deck, bulkheads, and transoms to build a hard-chine plywood or similar boat hull at any scale. we will not be in any. You can then simply log into your secure members area and download it for free so you can be on your way to building the boat join the 1000’s of other happy users of this amazing 3d boat design software. Boatbuilding software [other stuff] [my stuff] free (or nearly free) boat design software on the web: blue peter marine systems hullform 6s (dos) now available for download (see below)! unfold is a c++ program.