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GreendreamsSubsea Cable Service

Services

Full lifecycle subsea cable engineering

From the first desktop study to the twenty-fifth year of maintenance, every discipline you need sits inside one accountable delivery organisation.

Subsea Cable Installation

Deep-water and shallow-water lay, burial and shore-end operations.

Plough and jet-trenching to 3m depth of lowering, shore-end pull-ins, and full as-laid documentation delivered on completion.

Cable Route Survey

Desktop study, geophysical and geotechnical survey, route engineering.

Multibeam bathymetry, sub-bottom profiling, magnetometer and CPT campaigns feeding a fully permitted route position list.

Marine Engineering

Offshore structures, crossings and protection engineering.

Rock placement, mattressing, crossing agreements and landfall civils engineered to survive currents, trawling and anchor risk.

Fiber Optic Systems

Wet plant design, splicing, terminal equipment and commissioning.

Repeatered and unrepeatered system design, coherent line terminal integration, OTDR and COTDR acceptance testing.

Offshore Telecommunications

Platform, wind farm and island connectivity infrastructure.

Resilient backhaul for energy assets and remote communities, including diverse routing and hybrid microwave/satellite failover.

Cable Maintenance

Zone maintenance agreements with guaranteed vessel availability.

Standby vessels, depot spares, jointing kits and annual dry-run exercises keep mean time to repair inside contract windows.

Emergency Cable Repair

24/7 fault localisation, mobilisation and jointing at sea.

Fault located within hours, vessel mobilised inside 24 hours, final splice and burial with post-repair performance report.

Network Monitoring

Continuous optical performance and integrity surveillance.

24/7 NOC monitoring with distributed acoustic sensing alerts for anchor drag, fishing activity and seismic disturbance.

Project Management

Turnkey delivery from permitting to provisional acceptance.

Single point of accountability across marine, terrestrial and regulatory workstreams with transparent milestone reporting.

Engineering Consultancy

Feasibility, due diligence and independent technical advisory.

Route feasibility, CAPEX/OPEX modelling, supplier evaluation and lender's technical advisory for financed systems.

Not sure which scope you need? Start with a route feasibility study.

We will tell you what is achievable, what it costs and what the seabed will demand — before you commit.

Talk to an engineer