A dry suit can be used with a regular BCD for dry suit diving.

A dry suit is designed to keep the diver dry by enclosing them in a waterproof layer, which can be essential in cold water diving conditions. While it is indeed possible to use a regular Buoyancy Control Device (BCD) with a dry suit, doing so typically is not advisable.

One of the main reasons for this is that the buoyancy characteristics of a dry suit differ from those of a wetsuit. A dry suit expands when it is filled with air during a dive, and this air needs to be managed separately from the buoyancy provided by a BCD. The proper way to manage buoyancy while dry suit diving is to utilize either the air in the dry suit or a dry suit-specific inflation system, rather than relying solely on a BCD.

Using a regular BCD can lead to difficulties in controlling buoyancy, especially during descents and ascents, as the air in the dry suit will not effectively replace the buoyancy control needed from the BCD. Divers are typically trained to use either a dry suit's inflator for buoyancy control or a specialized buoyancy control system designed to accommodate the unique aspects of dry suit diving. Thus, it is essential to understand that proper buoyancy management while dry suit diving is crucial for