Description
Perform mixed-gas and saturation dives to inspect, construct, repair, and salvage equipment and structures at great depths. Use surface-supplied umbilicals, diving bells, habitats, and specialized tools to execute offshore and deepwater operations, including NDT, cutting/welding, and rigging, while strictly following decompression and life-support protocols.
- • Communicate with the surface and bell through hardline systems during deepwater operations.
- • Plan and monitor dive profiles, depths, bottom times, and decompression schedules in compliance with regulations.
- • Inspect and maintain deep-diving gear, including helmets, bells, umbilicals, hot-water suits, and gas reclaim systems.
- • Conduct saturation operations, including transfer under pressure and chamber habitation.
- • Gather site data on currents, visibility, seabed conditions, and subsea asset status before dives.
- • Inspect pipelines, risers, wellheads, templates, platform legs, and subsea cables using video, sonar, and NDT.
- • Perform hyperbaric cutting and welding with appropriate habitats, jigs, and supports.
- • Use hydraulic and pneumatic tools to clean, grind, torque, and fit subsea components.
- • Install, bolt-up, and pressure-test subsea flanges, spools, valves, and anodes.
- • Rig and recover objects or debris at depth with lift bags, slings, and coordinated crane operations.
- • Place grout bags, mattresses, or sandbags to stabilize seabeds and support structures.
- • Drill holes in rock or concrete and, when authorized, rig explosives for controlled subsea demolition.
- • Carry out NDT such as ultrasonic testing, magnetic particle inspection, and eddy current on deepwater structures.
- • Operate or interface with ROVs, sonar, video, and data recording systems.
- • Remove marine growth from intakes, strainers, and structures using brushes or cavitation cleaners.
- • Respond to emergencies and conduct deepwater search, recovery, and pollution mitigation as conditions permit.
- • Supervise, brief, and mentor divers and tenders; lead toolbox talks and safety drills.
- • Maintain accurate dive logs, chamber records, equipment checklists, and as-found/as-left reports.
- • Inspect and repair moorings, anchors, and subsea mooring lines.
- • Support offshore exploration and field development by performing surveys, metrology, and dimensional control.
- • Verify cathodic protection and install or replace sacrificial and impressed-current systems.
- • Follow life-support, gas management, bailout, and hyperbaric emergency procedures.
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This site includes information from O*NET by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA), used under the CC BY 4.0 license. Career Clutch has modified some of this information for student readability. USDOL/ETA has not approved, endorsed, or tested these modifications. O*NET® is a trademark of USDOL/ETA.
Last reviewed: Jan 2026
