Boat plans bruce roberts official web site offers custom boat plans and boat kits for steel boats or aluminum boat designs, cut to size boat kits, part built boats or complete boats. bruce roberts yacht designs offer boat building project management arrangements for boats built overseas at affordable prices. sailboat and powerboat building plans and kits available for building steel boats. Boatbuilders, manufacturers & repair yards n to z: naiad inflatables (manufacturer of rigid hulled inflatable craft, ribs, picton, new zealand); najad yachts of sweden (fiberglass cruising sailboats, henån, sweden); nanaimo yacht services (boat repair and haulout, british columbia); nathan greeley, boat builder (traditional wooden boat building, restoration, and repair, portsmouth, new hampshire). Description. the sirenetta 300 is a mini kayak which has been conceived with the purpose of introducing youngsters to the pleasures of the paddle, but which, when necessary, may be used by adults..