Arch davis design – offering boat plans, kits, videos and dvds for the amateur boat builder including sail boats, row boats and power boats.. For email marketing you can trust. departments. new products; boat plans & kits catalog; new – electrical design plans. Power 1 : 16’x5’6’’ ply motor launch of ultra simple construction using pre-shaped ply hull panels, frames and transom. the chine joints are completed with.