1805 george avenue annapolis, maryland 21401 usa © 2017 chesapeake light craft, llc all rights reserved. reproduction in whole or in part without written permission. Spira international wooden boat plans. following are the stock plans available for the various types of boats, separated into the different categories.. Boat plans and boat designs from select naval architects, yacht designers, and marine architects. powerboat plans, sailboat plans, monohull, multihull, and trihull.