Arch davis design – offering boat plans, kits, videos and dvds for the amateur boat builder including sail boats, row boats and power boats.. See more of the dulcibella in the builder’s gallery. dulcibella is a classic lapstrake pulling boat in the tradition of the renowned norwegian pram.. Didi mg30 built by tamas csaba in hungary . our stock design file . click on design links below to see more info. go to pricelist for plans & study packs.