[ Marine & subsea operations ]
One Partner. Complete offshore campaign delivery.
A specialist marine and subsea contractor with almost 30 years of operational heritage and global marine and engineering expertise, turning complex marine operations into seamless offshore campaign delivery.
30
~
Years marine operations experience
250
+
Managed marine & subsea projects
1000
+
Vessel fixtures
300
+
Managed rig moves
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[ Who we are ]
Ross Offshore combines almost 30 years of heritage in North Sea operations with the global marine and engineering capabilities of its sister companies AGR, ABL, OWC and Longitude, delivering turnkey marine and subsea operations for the offshore energy industry.

One Partner. People. Vessels. Planning. Delivery.
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We provide integrated offshore campaigns tailored to the precise requirements of your project, supporting you across the full project lifecycle; from early planning and mobilisation to offshore execution, life of field operations and decommissioning.
By combining the right specialists with access to fit-for-purpose vessels, we manage your project from start to finish. This helps you protect your people and operations, reduce downtime and cost exposure, and deliver with certainty.
[ What we do ]
Complex offshore projects require more than specialist services.
They require clear accountability, careful coordination and the ability to bring together the right people, assets and expertise. Ross Offshore combines almost 30 years of marine operations heritage with specialist marine, operational and engineering expertise to provide one partner for complete offshore campaign delivery. Supporting offshore oil and gas, offshore wind and decommissioning projects worldwide, we help clients reduce complexity, manage risk and deliver with confidence.
Vessel chartering, anchor handling, mooring and towing, planned and managed by our marine team from mobilisation to demobilisation.
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Site survey campaigns managed end to end, so you have the seabed data you need before you commit to a project.
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Marine operations and project management support for subsea construction campaigns, from early planning to offshore execution.
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Planning and delivery of vessel-based decommissioning and plug and abandonment campaigns for late-life offshore assets.
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[ Our approach ]
Where experience meets expertise.
Global. Tailored. Integrated.

Safety is not a differentiator we claim; it is a condition we evidence.

With in-house technical staffing solutions provider, AGR Consultancy, and a pool of 2000+ marine and engineering consultants across Aqualis, we are well equipped to resource your project with the relevant and localised disciplines.

Our asset-light model, with several vessels under management mandates, gives clients the operational flexibility to match vessels and tool packages to the scope. We have the benefit of being independent from an owned fleet.

Our Ross Offshore team brings a proven track-record and lengthy industry experience in planning and managing offshore campaigns for clients.

Our approach is to bring experience and expertise together under one partner, tailored to your specific project requirements, to ensure an integrated and smooth operational delivery.
“We focus on understanding our clients and their real needs, while recognising that sustainability is not only about the environment, but also about economics. By selecting the right people and the right assets for each scope (fit-for-purpose rather than over-specified), we deliver safe, efficient operations with strong HSEQ performance and sustainable margins.”
[ Our accreditation ]
Safety and HSEQ: the first requirement of every scope
Safety is not a differentiator we claim; it is a condition we evidence.
Ross Offshore operates under a certified management system with ISO 9001:2015 (approval 00006691), ISO 14001:2015 (approval 00006690) and ISO 45001:2018 (approval 00047497), held via our sister company AGR. HSEQ runs through the mandate model itself: vessels and crews are vetted before they enter our portfolio, every scope is planned with structured risk identification and mitigation, and stop-work authority applies to everyone on our operations.




[ Our people ]
Combining Ross Offshore legacy in North Sea operations with global capability.
Contact our experts to discuss your project, requirements and a delivery model to suit you.
Discuss your project
[ Our vessels under mandate ]
Specialised offshore vessels for challenging marine and subsea operations.
We understand that in any marine and subsea operation, the vessel capability and type can make or break a project. No two operations are the same, and all are affected by a wide variety of variables: environmental, meteorological, logistical and commercial. That's why we've built an asset-light model with a series of vessels under management mandates, enabling us to select and charter the right vessels, assets and expertise for each project, without being tied to an owned fleet.
Proud to partner vessel owners around the world

[ Our experience ]
Trusted partner in offshore energy
Ross Offshore has delivered marine operations for clients across the UK and Norwegian continental shelf for almost 30 years, as well as supporting clients on a more global basis via the wider geographical footprint of our parent company Aqualis.
Some of the clients we work with





[ Ross Offshore + Aqualis ]
Integrated marine & engineering expertise through Aqualis
North Sea heritage complemented by the multidisciplinary technical expertise and global footprint of Aqualis.
As part of Aqualis, the global group of technical consultancies in energy and oceans, our clients benefit from the multidisciplinary, niche marine and engineering expertise of sister companies AGR, ABL, OWC and Longitude, ensuring a truly end-to-end approach to offshore delivery.
Through Aqualis' 40+ locations worldwide, Ross Offshore has a unique ability to resource marine and subsea operations anywhere in the world, with the relevant technical expertise, based locally.
[ News ]
Related news
[ #IamRoss · Careers with Ross Offshore ]
How Ross are you? Be part of our team.
Are you an experienced offshore professional with a passion for transforming ambition into operational achievement? Then we want to hear from you. Explore our vacancies at Ross Offshore or submit your CV for potential future engagement.


[ Get in touch ]
Contact us
Contact our experts to discuss your project, requirements and a delivery model to suit you.














