Check out the virtual tour of sivercraft 36 ht and check its specifications, e-brochure, deck plans and some images of the silvercraft 36 ht.. Tech support. the best technical support: we will help you succeed! all our plans and kits come with full technical support. ask questions on our support web site. Spira international wooden boat plans. following are the stock plans available for the various types of boats, separated into the different categories..