Diver propulsion vehicle

Diver propulsion vehicle (DPV), also known as an underwater propulsion vehicle or underwater scooter, is a specialized piece of diving equipment used by scuba divers to increase their range underwater. The device propels the diver through the water, reducing the effort and increasing the distance they can cover.

History

The concept of a diver propulsion vehicle dates back to the early 20th century, with the first recorded use of a DPV in 1911 by Frenchman Louis Boutan. However, it wasn't until the 1960s that DPVs became more widely used, primarily by military divers for tasks such as reconnaissance and mine disposal.

Design and Operation

A typical DPV consists of a pressure-resistant watertight casing containing an electric motor, which drives a propeller. The diver holds onto handles at the rear or sides of the device. Some models also include a saddle for the diver to sit on, or a tow-behind design where the diver is pulled along.

The speed of a DPV is controlled by a switch on the handle, and some models also include a depth gauge and compass. The device is powered by a rechargeable battery, which provides between one and two hours of operation.

Uses

DPVs are used in a variety of underwater activities, including cave diving, wreck diving, and underwater archaeology. They are also used by military and commercial divers for tasks such as underwater construction, salvage work, and mine disposal.

Safety Considerations

While DPVs can greatly increase a diver's range, they also pose potential risks. These include the possibility of being carried too far from the surface or the dive boat, and the risk of decompression sickness if the diver ascends too quickly. To mitigate these risks, divers using a DPV must be properly trained in its use and follow safe diving practices.

See Also

• Scuba diving
• Underwater archaeology
• Cave diving
• Wreck diving