[kk58]

Sat diving in oil and gas is primarily conducted off a "DSV" aka diving support vessel. Usually SAT spread ia required for subsea work below 40m to 130m. While it is theoretically possible for deeper sat dives, the burn rate of oxygen at deeper depths is quite high which results in big increase in diving crew to 1 manhour of job. Most diving crews also hhave a DMT or diving medical tech. Kinda like diving ER. Mostly this stuff is safe but sometimes divers get disoriented or make mistakes which results in hazards.