Chesapeake marine design offers a wide range of products and services in boat design and engineering including stock boat plans, custom yacht design services. Boat plans and boat designs from select naval architects, yacht designers, and marine architects. powerboat plans, sailboat plans, monohull, multihull, and trihull. Proven boat designs, and how-to information for boat building. boat plans are for beginners and have been built by thousands since 1953..