Diver recovery operations

The diver is any person who dives under water with the aid of an autonomous delivery system that supplies him with the respiratory mixture at the pressure of the environment in which he operates, allowing him to remain underwater for variable periods relating to the quantity of gas that the system can carry and to the depth in which it is breathed. Specifically, the recovery diver is the one who dives into the depths of the waters to retrieve objects, falls, historical artifacts and anything else required of him.