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 PSAI Twin Set Diving

The PSAI Twin Set Diving course is designed to train divers to properly use twin cylinders (doubles) for recreational diving activities. It will discuss the configuration and the peripheral equipment, as well as accessories and maintenance.


Introduction to Twin Set Diving

Why Dive a Twin Set?

Twin Set Components

Twin Set Advantages

Twin Set Disadvantages

Types of Twin Sets

Buoyancy Devices for Twin Sets

Weight Systems


Twin Set Accessories

Diving a Twin Set

Care and Maintenance

 A twin set may be used for many reasons. These could include the diver possessing a particularly high air consumption rate, the need to dive with more of a safety margin, or simply to dive deeper than a single cylinder will safely allow.

Many divers state that wearing a twin cylinder configuration is more stable than a single cylinder and it helps alleviate diver roll when leaning to the left or right during a dive. This would make sense as with a twin set configuration you would have a far wider surface area across your back, giving a large stable platform rather than the narrow profile offered when diving with a single.

For certain areas of diving, such as diving in an overhead environment, a twin set is almost a necessity rather than an individual choice. In these surroundings the margin for error is reduced because you cannot make a direct ascent to the surface in the event of a gas failure. In this situation a twin set would almost certainly raise the chances of a safe exit. The PSAI Twin Set course will help almost any diver expand their horizons and safety margins in the underwater world