Ithaca orders subsea solutions for UK North Sea fields

Subsea7 has won a contract valued between US$50M and US$150M from Ithaca to support decommissioning of the Alba floating storage unit and Greater Stella field FPF-1 floating production facility. Its scope of work includes flushing the subsea pipelines, providing diver support vessel services and seabed clearance.

Subsea7 said project management and engineering will commence this year in its office in Aberdeen, Scotland, and offshore activities are scheduled to begin in Q2 2026.

Subsea7 has a longstanding relationship with Ithaca Energy which began in 2008.

On Captain, Ithaca has extend the shutdown of the wellhead platform and floating production storage and offloading (FPSO) vessel to allow for increased scope and further investment into safeguarding longer-term environmental and operational performance.

On 13 November, Ithaca extended its charter of Prosafe’s semi-submersible accommodation vessel, Safe Caledonia, by exercising a further seven weeks of options, keeping it connected to the FPSO until early February 2026.

Its significant ongoing investment at Captain includes modifications and installations on the FPSO and further drilling activity to the end of 2026.

Ithaca 2026 investments

Ithaca is also investing in four assets to prolong and increase oil and gas production in the UK North Sea. This includes infill well drilling on the Cygnus gas field, on the Seagull oil field, on the Judy East Flank development and Joanne well stimulation activity in the J Area.

Most of Ithaca’s long-term energy investment will be west of Shetland where the UK-headquartered energy producer is developing two oil and two gas fields.

This includes Rosebank, where Adura is developing more than 300M barrels of oil with a network of subsea systems and a refurbished FPSO.

On the Cambo, tendering has started for main project packages including FPSO engineering, procurement, construction and commissioning and subsea umbilicals, risers and flowlines.

Project partners intend to submit an updated field development plan and environmental statement in Q4 2025 or Q1 2026.

On the gas side. Ithaca anticipates a field development plan and environmental statement will be submitted in 2026 for the Tornado development and work will continue on planning the Tobermory field.

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