Powerboat design software for tunnel hulls and vee hulls – design sport tunnel, offshore catamarans, circuit racing tunnels (f1 / iogp), bass boats, ocean racers (opc. A large number of aluminum single hull (monohull) boat designs (plans) that serve a variety of purposes. these include orcas, outbacks, sitkas, sportsters, sport. Model boat hull design notes – hull design and construction is my favorite aspect of building model boats. here are some tips for hard chine and round bilged hulls.