The electrical conductivity of binary dis-ordered systems

A compact, unitary, self-powered device for propelling an individual through water at or near the surface. Handles are located at the forward end of the device adapted to be grasped by the individual being towed and by means of which the propelling device may be easily controlled and maneuvered through the water. "Homing" vanes are provided to cause the device to circle about a substantially fixed center when the handles are released by the individual.