Codex
Technology
Diving systems, submersibles, communications, and the cable that links it all to the surface.
diving · 300 – 700 m
ADS — the Newtsuit lineage
The articulated atmospheric diving suits used by the survey from roughly three hundred to seven hundred metres.
communications · surface – 4 000 m
Hydrophone networks
The passive listening grids that monitor the human shelf and the bathyal approaches; not surveillance, exactly, but the closest the survey has.
diving · 100 – 300 m
Saturation diving systems
The pressurised-confinement protocol used by long-duration human work between roughly one hundred and three hundred metres.
submersible · 700 – 11 000 m
The DSV class hierarchy
A three-tier classification of crewed submersibles by depth rating, used by the survey for tasking, insurance, and crew certification.
surface link · 0 – 600 m
The Helmsward cable
A single fibre-and-power conduit running from the surface link down to Varangurd and on along the shelf to the deeper enclaves.