Utilising James Fisher Subtech's air diving capability and remotely operated vehicle, the team successfully inspected the entire underwater marine jetty infrastructure and completed a targeted condition survey to closely inspect structural condition of piles, jetty legs and associated structures in a busy tidal estuary.

Project scope: Inshore air diving and ROV operations

Location: Near Southampton, Hampshire, UK

Start date: 2 October 2022

End date: 21 October 2022

Download case study

The challenge

  • Operating in a highly legislated environment (oil and gas safety) required divers and diving supervisor to be IMCA qualified and suitably experienced
  • The height, design of the jetty and immediate location meant that access to the worksite was by sea
  • Due to the diving site being approximately 20 minutes from the diving vessel berth, the team had to carefully consider their casualty evacuation plan to ensure that the safest operating procedures were in place throughout

The solution

  • By using JF Subtech’s in-house diving support daughter craft, Calmar, the team were able to operate both ROV and diver without needing shore access and operated independently throughout
  • JF Subtech placed a decompression chamber at a local marina which provided safety cover in the event of a diving emergency requiring hyperbaric treatment
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.

The results and benefits

  • The three week project was safe and successful, with zero incidents or accidents, seeing diving and ROV data being processed and delivered to the customer on time, enabling them to plan follow on maintenance and repair works
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