Why is carrying a backup mask highly recommended for all technical dives?

Carrying a backup mask is highly recommended for all technical dives primarily due to the inherent risk of failure that exists with any piece of diving equipment, including the primary mask. In the event that the primary mask is damaged, improperly fitted, or lost during a dive, having a backup allows the diver to quickly regain the ability to see and navigate effectively.

In technical diving, where environments can be particularly challenging, visibility is crucial for safety, communication, and ensuring successful navigation through potentially hazardous areas. A backup mask mitigates the risk of disorientation or panic that could arise from the loss of essential visual equipment. Therefore, the emphasis on carrying a backup mask underscores the commitment to safety and preparedness that is fundamental in technical diving practices.