Browse through our catalog of inboard boat hardware. it contains everything you will need to install or retrofit an inboard engine in a boat. many of these. Atkin & co boat plans, boat designs, boat building, william atkin, john atkin, billy atkin, small boats, good boats. Find a variety of fishing boat design plans for all power boats 16′ long and under. our power boat building plans make it very easy to construct your own!.