Chesapeake marine design offers a wide range of products and services in boat design and engineering including stock boat plans, custom yacht design services. Below are free plans from the web for building a plywood boat. over 40 free plans. boating is full of thrill and adventures, and you will be glad to make it a part of. Welcome to absolutely free plans, in this section you will find free boat building plans including accessories and construction techniques. free plans have a tendency.