An underwater maneuvering device is disclosed. It utilizes a horizontal planar member, a perpendicularly disposed fin member, hand grip portions, and a towing bridle, pulley and towline assembly that permit the device to freely change its angular alignment to the towline for diving, turning and surfacing maneuvers. The arrangement of the members and hand grip portions permit gripping thereof by the diver so that the drag forces of the diver input the forces needed to control the device, requiring little or no additional effort on the part of the diver. The device may be constructed to disassemble for easy transport and storage.