This role combines two disciplines that are usually separate on land: underwater welding, which repairs structurally compromised pipelines, platform legs, and ship hulls below the waterline using hyperbaric or wet-welding techniques, and subsea inspection, using visual and non-destructive testing methods to find the corrosion, crack, or fatigue damage before deciding how to fix it. The primary pull is Resolution — a structurally compromised underwater asset made sound again — with Revelation close behind, because a genuine share of the work is finding the defect before it can be repaired at all.
Underwater welding is a genuinely distinct discipline from welding in open air — the physics of arc welding change underwater, and the hyperbaric welding certifications the role requires are among the most technically demanding in the entire commercial diving world, held by a comparatively small number of qualified people.
Kitsune can talk through anything on this page — whether it might suit you, what to do next, questions this page doesn't answer. Everything here is yours to read either way.
The pay reflects the extreme technical bar unevenly across the specialisation: inshore and civils diving-welding roles sit closer to the roughly £26,000 UK average for commercial divers broadly, while certified offshore hyperbaric welders command day rates well above that figure [survey_aggregator, PayScale / industry commentary 2025–26]. The certification path is genuinely additive rather than a variant of ordinary diving training — a working commercial diver has to add a separate, specific underwater welding qualification on top of their core diving qualification, which is why this is a specialisation people grow into rather than start in.
The HSE Part 1 Surface Supplied qualification (and Part 4 for offshore work) is the base commercial diving requirement, on top of which a distinct underwater welding certification is required — commonly gained through employer-sponsored training once a diving career is already established. Some entrants come from a topside welding trade background and add diving qualifications; others qualify as divers first and add welding certification once they know the specialisation is right for them.
The inspection half of this hybrid role overlaps with exactly the task category AUVs are substituting for; the welding half is untouched.
Welding specialisation persists in demand; the inspection component may shrink as a share of total work without threatening the role's existence.
People drawn to Underwater Welder & Subsea Inspection Technicianare often drawn to these — in the order they're closest. The ones marked sit in a different field entirely.