Decommissioning marks the final phase in the lifecycle of maritime and offshore assets. It involves the safe retirement, removal, and disposal of ships, platforms, and subsea infrastructure, alongside environmental restoration and regulatory compliance.
At Commercial Marine Group, we deliver turnkey decommissioning solutions with a focus on safety, environmental stewardship, and cost efficiency—ensuring assets are responsibly dismantled and sites are left clean for future use.
We support full or partial decommissioning of:
Commercial & naval vessels
Offshore oil & gas platforms (jack-ups, semi-subs, fixed, FPSOs)
Subsea pipelines, manifolds, risers, and umbilicals
Renewable offshore wind turbines and export cables
Submission of a formal Decommissioning Plan to authorities (e.g., OPRED, BSEE)
Completion of Environmental Impact Assessments (EIAs)
Inventory of hazardous materials and salvageable assets
Installation of cement plugs and barriers to seal subsea or surface wells
Cutting and removal of wellheads and conductors
Safe flushing of pipelines, tanks, and topsides
Removal and disposal of hydrocarbons, chemicals, and hazardous residues
Isolation of power systems, pipelines, moorings, and umbilicals
Dismantling of topside modules and subsea structures (e.g., jackets, pontoons)
Use of heavy-lift vessels, cranes, or float-over systems for topside and substructure removal
Subsea infrastructure either retrieved or abandoned in situ (per regulatory guidance)
Onshore transport of components for recycling or scrapping
Waste handling follows strict environmental protocols
ROVs and trawls used to clear debris and inspect the seabed
Seabed restoration to original or agreed condition, or reef creation if approved
Harsh and remote offshore conditions
Aging or undocumented infrastructure
Evolving or inconsistent regulatory requirements
Handling of hazardous materials (e.g., NORMs, asbestos, PCBs)
High financial burden — projects can exceed hundreds of millions
Protects the marine environment
Ensures safety of personnel and surrounding communities
Opens seabed for new energy developments
Encourages material reuse and circular economy principles
Meets all legal and classification obligations
Comprehensive project planning and engineering
Regulatory liaison and permitting
Diving and ROV operations
Well plugging and abandonment
Structural cutting, lifting, and removal
Waste logistics and disposal
Full documentation and compliance reporting
With our multi-disciplinary team and proven offshore capability, Commercial Marine Group provides safe, compliant, and efficient decommissioning services—whether for a single vessel or a complex offshore facility.
