Hello! i’m trying to build a boat following these plans. but it seems to have a problem with the caves 3 and 4. they do not follow the line of the boat.. Hobby resource site for model steam engine plans, rc ship and boat plans, mini-lathe projects, home workshop tools and model engineer projects. fly fishing and. Modeling n to z: the national museum of ship models and sea history (sadorus, illinois) nature coast hobby shop (wooden and plastic ship models, books, tools, supplies).