Chesapeake marine design offers a wide range of products and services in boat design and engineering including stock boat plans, custom yacht design services. Hull and frames design for ‘hogging’ introduction. usually there is no construction drawing available for old wooden boats. to still be able to get a line plan of the. Check out multi-hull boat plans for power cats, trimarans, beach cats, sail cats, and pontoons. shop online at bateau for multi-hull boat design plans!.