JeffG once bubbled...
Anchor lines will have a "donut" around them. This donut has a computer that controls depth and has regs on it with the computer controlling the gas mixture. The donut also hold divers to it.
Divers will go to the Andrea Doria, attach themselves to the donut, put the reg in their mouth, and then descend to the ship. Tech divers (acting as DM's) will attach scooters to the divers.
These scooters are control by radio wave beacons placed around the ship. The scooters have a computer that controls their depth and travels a pre programed path.
When the scooter trail is done. The DM's get the divers to re-join the donut.
It then ascends, does the proper deco, uses the right gas mixtures,......
No certification is required.
Isn't this what they do now in Bakini?