Offshore Operations & Maintenance

AGR supports offshore asset owners and operators with practical offshore operations and maintenance (O&M) delivery, from day-to-day marine operations coordination to delivering marine assurance, O&M planning and offshore execution support.

We work across oil and gas and offshore wind, helping wind turbine manufacturers, wind farm developers/operators, as well as jack-up owners and contractors maintain asset viability, and complete maintenance efficiently in challenging offshore conditions.

Offshore O&M challenges

Offshore operations and maintenance (O&M) campaigns are constantly shaped by competing pressures — from limited weather windows and shifting operational priorities to the high cost of non‑productive time (NPT) and the production losses that follow. With these realities in mind, our clients rely on our years of experience to help them navigate complex interfaces across vessels, contractors, OEMs, ports, and permits, while maintaining strict HSEQ and regulatory compliance without slowing delivery.

At the same time, offshore asset stakeholders need to execute both planned maintenance and unplanned corrective work quickly and safely. Utilising our deep offshore O&M experience, we support effective coordination of offshore infrastructure component exchanges and subsea cable repairs, logistics, and vessel scheduling to avoid bottlenecks and keep offshore operations running efficiently.

Offshore O&M delivery support

Our multidisciplinary approach enables us to deliver comprehensive support designed to de‑risk and optimise your offshore O&M operations:

•  Predictive, preventive, and corrective support
• Operations planning and execution, and marine coordination
• Workpack readiness and maintenance planning support
• Campaign planning and execution support (planned and preventive maintenance, integrity, repairs)
• Contractor and interface management (OEMs, vessel providers, subcontractors)
• Offshore supervision and quality assurance

Marine and logistics

• Vessel planning and scheduling support
• Ports and harbour interface and logistics coordination
• Materials and component exchange
• Reporting, documentation, and close-out packages

HSEQ, compliance and assurance

• Risk assessments and execution planning
• Permit-to-work / SIMOPS support (scope-dependent)
• Assurance-ready documentation and traceable reporting

Together with our sister companies ABL, Longitude Engineering and OWC, we provide end‑to‑end O&M support, uniting ABL’s offshore renewables O&M and marine assurance expertise, Longitude Engineering’s lifecycle marine and subsea engineering capability, and OWC’s specialist offshore wind O&M advisory and performance optimisation services.