A diver propulsion vehicle (DPV), also known as an underwater propulsion vehicle, sea scooter, underwater scooter, or swimmer delivery vehicle (SDV) by armed forces, is an item of diving equipment used by scuba divers to increase range underwater. Range is restricted by the amount of breathing gas that can be carried, the rate at which that breathing gas is consumed, and the battery power of the DPV. Time limits imposed on the diver by decompression requirements may also limit safe range in practice. DPVs have recreational, scientific and military applications.
Recreational diver using a lightweight diver propulsion vehicle
Two U.S. Marines of the Maritime Special Purpose Force operating a Diver Propulsion Device (DPD)
Two divers scootering with heavy duty DPVs
An Italian maiale type manned torpedo, at the Royal Navy Submarine Museum.
Diving equipment, or underwater diving equipment, is equipment used by underwater divers to make diving activities possible, easier, safer and/or more comfortable. This may be equipment primarily intended for this purpose, or equipment intended for other purposes which is found to be suitable for diving use.
Surface supplied commercial diving equipment on display at a trade show
A US Navy diver at work. The umbilical supplying air from the surface is clearly visible
Diver in standard diving dress entering the water at Stoney Cove, England
Scuba diver with single cylinder and open circuit regulator
