View from the deck of a ship looking out at a large offshore wind turbine in the ocean with two other ships in the distance under a clear sky.

[ What we do ]

Subsea Construction Support

Supporting subsea infrastructure across the asset life cycle in oil and gas, renewables, interconnectors and data infrastructure.

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Discover our approach

Ross Offshore delivers subsea construction support for offshore wind, interconnectors, data infrastructure, oil and gas, carbon capture and storage (CCS), decommissioning and marine infrastructure projects. Our services include trenching, dredging and excavation, subsea rock installation, anchor and CAN installation, offshore cable operations, and subsea inspection, repair and maintenance.

Support spans scope definition, method development and constructability through offshore execution, verification and handover.

Drawing on almost 30 years of operational experience, we combine specialist teams with fit-for-purpose vessels and equipment, supported by design, engineering, geoscience and marine assurance expertise. This integrated capability helps clients manage offshore interfaces and execution risk across installation, operations and maintenance (O&M), intervention and decommissioning.

Our right tool, right vessel, right job approach keeps delivery proportionate to the scope. Lean project teams, flexible vessel solutions and the ability to bundle suitable activities under one delivery structure help reduce interfaces, contractual complexity and unnecessary cost, while maintaining clear accountability from planning through offshore execution.

[ Integrated subsea construction support ]

End-to-end support to keep subsea construction campaigns predictable.

01
Offshore Cable Operations
Ross Offshore supports offshore cable lay, cable burial and cable repair campaigns with route surveys, marine operations, vessel & ROV support, and offshore interface management, from route preparation through offshore execution and handover, helping maintain route integrity, minimise downtime and reduce execution risk.
02
Trenching, Dredging and Excavation
Ross Offshore delivers trenching, dredging and excavation campaigns for offshore energy and marine infrastructure projects. We mobilise fit-for-purpose assets, specialist tooling and trusted delivery partners, selecting the most appropriate execution method for each scope. Long-standing relationships with key subcontractors, combined with our marine operations expertise, help clients maintain schedule certainty, reduce execution risk and deliver efficient subsea construction programmes.
$Close-up of rock formations showing layered sedimentary rocks with folds and fractures in earthy tones.$
03
Subsea Rock Installation
Ross Offshore manages subsea rock installation campaigns supporting scour protection, free-span correction, stabilisation and mechanical protection of subsea assets, cables and pipelines. We coordinate seabed preparation, excavation support, debris clearance, survey and ROV interfaces through to installation verification and handover, ensuring compliance with placement criteria, minimising rework, protecting schedules and delivering predictable offshore execution.
04
Anchor Solutions
Ross Offshore provides support for suction anchor, penetration anchor and pile anchor installation campaigns for offshore wind, mooring systems, subsea infrastructure and well construction projects. We manage the deployment and installation of CAN, CANductor and Cap-X systems. Our delivery spans performance monitoring and offshore interface management. Drawing on our field-proven anchor installation processes, installation verification and traceable reporting provide clients with confidence in long-term asset integrity.
05
Subsea Inspection, Maintenance & Repair
Ross Offshore acts as a single point of contact throughout planned and reactive maintenance campaigns, supporting pipelines, mooring systems, subsea structures and offshore assets. Combining engineering, WROV operations, vessel management and marine operations expertise, we deliver inspection, condition assessment, integrity monitoring and ROV-enabled intervention services that improve asset integrity and operational continuity.
06
ROV Operations & Tooling Integration
Work class ROV spreads selected to integrate third-party and client-specified tooling on vessels under management mandates, supporting inspection, intervention and construction scopes without adding interface risk or offshore time.

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Contact our experts to discuss your project, requirements and a delivery model to suit you.

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[ Our experience ]

Your project and how we supported

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Project profiles

Ross Offshore delivers vessel-based wellhead removal operations for Vår Energi

Vessel-based wellhead removal by Ross Offshore, showcasing a cost-efficient, flexible offshore decommissioning solution.

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Project profiles

M/V Ross Eagle completes two work scopes safely and within budget

We are pleased to announce the successful completion of two work scopes with our vessel, M/V Ross Eagle, for leading E&P companies on the Norwegian Continental Shelf.

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Project profiles

M/V Ross Eagle sets a new standard in integrated site survey and geotechnical management

Ross Eagle tackles the shortage of special-purpose vessels, supporting survey management, well abandonment and decommissioning.

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[ Our value ]

Why Ross Offshore

Ross Offshore has delivered marine operations for clients across the UK and Norwegian continental shelf for almost 30 years.

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Practical knowledge built from delivering in demanding offshore environments.
Fit-for-purpose vessels, equipment and teams matched to the scope.
Vessels, specialist equipment, contractors and offshore execution brought together under one project structure.
Fewer interfaces and clearer accountability help reduce contractual and execution risk.
Access to subsea, engineering, geoscience and marine assurance expertise across the project lifecycle.