A large number of aluminum single hull (monohull) boat designs (plans) that serve a variety of purposes. these include orcas, outbacks, sitkas, sportsters, sport. Premium cnc boat kits in aluminum alloy and steel welcome to metal boat kits! we offer premium quality stock boat kits in aluminum alloy and steel.. Skiffs up to 16′ for outboard, oars propulsion, or sail. see the dinghies category too..