A large number of aluminum single hull (monohull) boat designs (plans) that serve a variety of purposes. these include orcas, outbacks, sitkas, sportsters, sport. All designs for aluminum construction are included here. for further study, we have books available in the books, dvd's and audio section of our store at your left.. These aluminum landing craft designs (plans) come in a variety of sizes for multiple purposes. the aluminum landing craft are ruggedly designed to withstand frequent.