1940's Tether Boat Hydroplane with Dooling Model Engine. Harry Traband Jr's fabulous post war 3 point hydroplane. This is his 1947 first version. When modified by Walt MacWilliams it stayed competitive until the late 1950's. It is fully wired with correct coil. Add fuel & batteries and you can run it. This is a big boat. 31.5 inch hull & 35 inch overall.