Markets | Renewables | Seabed intervention

Offshore wind seabed intervention

Powerful. Precise. Proven.

Yellow subsea intervention vehicle labeled DEEP OCEAN partially submerged near offshore wind turbine foundations in a grey, cloudy sea.

From inter-array cable burial to boulder clearance and cable protection, DeepOcean's seabed intervention capability keeps your project on track. With reliable assets across regions and a team built around solving problems, we're ready to mobilise when you need us.

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Seabed intervention built on more than 25 years of subsea expertise

Offshore wind cable protection demands precision, power and experienced delivery teams. DeepOcean brings all three together, backed by more than 25 years of subsea experience and a proven delivery record across the North Sea, the US and Asia-Pacific.

Our seabed intervention capability covers the full range of cable protection requirements, from jet trenching and ploughing to boulder clearance, pre-lay groove cutting, pre-lay grapnel run (PLGR), rock installation and backfilling. Whether the challenge is a complex seabed environment, a tight installation schedule or a combined lay-and-burial operation, DeepOcean has the assets, methodology and engineering depth to deliver.

Our engineering organisation of over 400 people supports every stage of delivery, from method engineering and installation analysis through to offshore execution, giving customers direct access to experienced technical leads with the expertise to manage even the most complex seabed conditions.

	UT-1	T1500+
Type	Jet trencher	Jet trencher
Jetting power	2,800hp	1,500hp
Burial depth	3m	3m
Operating depth	1,500m	500m
Soil types	Clays, soft clays, sands	Clays, soft clays, sands
Deployment	Permanently mobilised, Volantis	Vessel-agnostic, containerised
Sea state	Hs 2.5m (launch & recovery) /Hs 3m (on seabed)	Hs 4.5m

Specialist seabed intervention assets

Versatile trenching solutions for diverse seabed conditions

DeepOcean operates a fleet of purpose-built trenching assets designed to perform across the full range of offshore seabed conditions, from soft clays and sands through to hard ground requiring mechanical cutting.

The UT-1, the world's most powerful jet trencher, operating in offshore wind, is permanently mobilised aboard the Volantis and ready for rapid deployment. The T1500+ provides a flexible, vessel-agnostic solution for projects requiring alternative mobilisation strategies.

Our remote-first operating model combines ROV-supported trenching with digital data capture to reduce offshore personnel exposure, improve operational visibility and accelerate data turnaround, delivering safer, more efficient seabed intervention across offshore wind projects.

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OUR ASSETS

Why choose DeepOcean for seabed intervention?

Specialist capability, engineering depth and a proven track record across some of the world's most demanding offshore environments.

Purpose-built jet trenching technology including the UT-1 and T1500+, giving DeepOcean the flexibility to handle the full range of seabed conditions and cable protection requirements.

Specialist intervention fleet

Delivered trenching projects across the North Sea, the US and Taiwan, with experienced teams and vessels ready to mobilise globally.

Proven across regions

The teams responsible for intervening on your seabed retain critical site knowledge into the operational phase, enabling faster mobilisation and better-informed decisions if future IMR, re-burial or cable repair scopes are required.

Knowledge that carries

Part of something bigger

Seabed intervention as part of your full project lifecycle

Seabed intervention is one part of DeepOcean's complete offshore wind delivery capability. We support projects from pre-construction survey and route engineering through cable installation and burial, into long-term IMR and cable repair - with one integrated engineering organisation supporting the asset throughout its operational life.

That continuity creates long-term operational value. The site knowledge built during seabed intervention doesn't disappear at project handover, it stays within DeepOcean, informing faster response, lower operational risk and better decision-making across the full asset lifecycle.

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Renewables

FAQ

Ready to discuss your renewables project?

Whether you're in early-stage planning or need a specialist partner for a live project, our renewables team is ready to help.

renewables@deepoceangroup.com

Other renewables services

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Offshore wind farm with multiple turbines in the ocean at sunset, featuring a large yellow offshore platform and a white crane labeled Hydramarine extending towards it from a vessel.

Survey & Inspection

Delivering offshore wind survey and inspection services that help developers and operators reduce uncertainty, manage risk and make informed decisions across the full asset lifecycle.

Yellow underwater remotely operated vehicle (ROV) named DEEPOCEAN suspended above the calm sea from a vessel at sunset.

Cable Installation

Offshore wind transportation and installation services backed by more than 25 years of subsea experience.

Two workers in orange safety suits and yellow helmets managing thick orange and yellow cables on a ship deck with a blue sea and offshore wind turbines in the background.