A radio-controlled boat is a boat controlled remotely with radio control equipment.. Design and development. the rc-3 seabee was designed by percival hopkins "spence" spencer, an aviation pioneer who built his first hang glider in april 1911. at the time, he was 17 years old and constructed it from plans he found in a popular mechanics magazine. on may 15, 1914, spencer made his first powered flight in a curtiss flying boat. in 1937, he joined sikorsky engineer vincent a. The wolo rc-100 allows the user to operate a vehicle’s horn or turn any 12-volt accessory such as warning lights on and off, without having to wire between the engine compartment and the vehicle’s interior..