Spira international wooden boat plans. following are the stock plans available for the various types of boats, separated into the different categories.. Wooden boat plans and kits. many boat plans are offered online. at first everything is very confusing, then you start to get some idea of the different types of boats. Kayak "plans" a greenland kayak is not built per a set of plans but by a building method that strives to fit the kayak to your body dimensions..