Proven boat designs, and how-to information for boat building. boat plans are for beginners and have been built by thousands since 1953.. (photo at left: gayle and ken discussing his history in boat design.) after ken hankinson’s sudden retirement from the plan business in 2005, many were left. S.s. jermiah o’brien – liberty ship. model boat kit ready to purchase online from blue jacket shipcrafters, inc. model boat kits since 1905..