What is the minimum manning level for a single SCUBA dive?

The minimum manning level for a single SCUBA dive is based on safety considerations for underwater operations. Having 4 divers ensures that there are adequate personnel for both support and emergency response. This level allows for a buddy system where two divers operate together while the remaining divers can function as surface support or provide assistance on site.

This ensures that at least one of the divers is available to help if something goes wrong. It enhances safety by allowing for monitoring of each buddy pair, as well as having an additional person who can communicate with the surface or assist if a diver requires emergency attention. This higher manning level helps to minimize risks associated with underwater diving, making it a standard practice in many diving operations.