JF Subtech utilises its expertise for the extremes to provide cost-effective, efficient and innovative solutions to the oil and gas market.

Our experienced personnel, supporting dive spreads and deployment systems are available as integrated solutions. 

With an unrivalled track record across the sector, JF Subtech’s global operations spans Africa, Brazil and the Middle East, providing services to majors, supermajors and contractors, including: 


Confined spaces. Near shore. Subsea. Our dive teams have extensive experience and are trusted to install, inspect, repair, and decommission the world's critical infrastructure at depth. 

Our IRM services include:

  • Air / nitrox diving 
  • Saturation diving 
  • Asset-based diving 
  • Remotely operated vehicle (ROV) inspections
  • Rope access
  • Non-destructive testing (NDT) inspections
  • Project management
  • Provision of competency assured, vetted, diving and inspection personnel 

We maintain the best industry safety standards. We are ISO 9001 accredited and adhere to IMCA guidelines as a full member and diving contractor. Our rope access / NDT inspection teams comply with IRATA standards. 

Cable installation

JF Subtech delivers specialist project capability to serve the IRM of submarine power cables, fibre optic cables, flexibles and umbilicals.

A highly qualified team with decades of engineering and project management experience offers a turnkey solution, or collaboration as part of a multi-party project service that spans the lifecycle.

Our services include: 

  • Cable pre-lay 
  • Cable lay and connection 
  • IRM


Efficient and environmentally safe 

A fully embedded partner in the methodology and execution of our customers’ decommissioning campaigns, we utilise in-house expertise and assets to provide industry-leading solutions together with our sister company, James Fisher Decommissioning. 

Experience and innovations are providing tangible time and cost savings for our customers by delivering faster project completion, fewer people on board (POB), and reduced vessel time.

  • With one of the largest subsea excavation fleet, we can provide controlled flow excavation (CFE) services 
  • A complete decommissioning service capability in the cutting and removal of subsea and platform infrastructure in a safe and environmentally sensitive manner
James Fisher is a global supplier of trusted engineering services across the industries we serve, with an unrivalled ability to develop innovative solutions that meet the constantly developing needs of our customers operating in challenging environments.
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Expertise for the extremes

JF Subtech helps to deliver the world’s most complex, technically demanding, and environmentally challenging energy projects in construction, IRM and decommissioning.

James Fisher Subtech
Registered office: Fisher House, PO Box 4, Barrow-in-Furness, Cumbria, LA14 1HR, UK Registered in England No. 103667© 2024 James Fisher and Sons plc