Global Marine Group

What Global Marine Group does

Global Marine Group (legal entity: Global Marine Systems Ltd) is a UK-headquartered, end-to-end submarine cable solutions provider founded in 1850, operating from Chelmsford with regional headquarters in Singapore and operational depots in the UK, Bermuda, the Philippines, and Portland. The group is structured into three business units: Global Marine delivers fibre optic cable installation and maintenance for telecommunications and oil & gas customers; OceanIQ provides subsea cable data, survey, route engineering, permitting, and consultancy services underpinned by the GeoCable database covering 2.8 million km of cable data (97% of global fibre, 90% of power cable, and 6,000+ historic faults); and SubConnect manufactures and supplies cable jointing tools, operates a UKAS-accredited testing laboratory (No 9277), and delivers training and SMART cable interconnectivity solutions.

The company monetises through four streams: (1) subsea cable installation projects (professional services), (2) managed maintenance agreements covering 33% of the world's fibre optic cables, (3) recurring subscription services via GeoCable Light and GeoCable Pro, and (4) hardware sales of UJ/UQJ jointing kits and training. Customers include major telcos, hyperscalers (Google, Meta, AWS, Microsoft), offshore wind developers, and scientific research institutions, reached via enterprise field sales with long-term contracts. In November 2025, Global Marine Group was acquired for S$119 million by Keppel Infrastructure Trust, marking the fund's first investment in the subsea cable services market, which is projected to grow at a 45% CAGR from 2023 to 2029.

Name

Global Marine Group

Legal name

Global Marine Systems Ltd

Website

https://globalmarine.group

Company type

Private

Founded year

1850

Operating status

Operating

Headcount range

11–50 employees

Short description

Global Marine Group is a UK-founded (1850) end-to-end submarine cable solutions provider operating three units: cable installation and maintenance (Global Marine), data and route engineering (OceanIQ), and jointing and testing (SubConnect), serving telcos, hyperscalers, offshore wind developers, and research institutions across global markets.

Ownership category

akta.pro rank

Product category

Submarine Cable Services

NAICS

Support Activities for Water Transportation (4883), Other Support Activities for Water Transportation (48839), Ship Building and Repairing (336611)

SIC

Water Transportation (4400), Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Subsea Cable Construction, Marine Installation & Repair Services (HDAIALAC)

akta.pro secondary industries

Cable Route Engineering, Permitting & Marine Survey (Seabed/Environmental) (HDAIALAK), Subsea Cable Maintenance Zones & Fleet Operators (Fault Response) (HDAIALAD), Marine Cable, Connectors & Cable Management (IMAJAJAK), Subsea Network Operations, Monitoring & NOC Services (SLAs/Performance) (HDAIALAF)

Keywords

• Submarine cable installation
• Subsea cable maintenance
• Fibre optic cable services
• Cable route engineering
• Subsea jointing solutions

Headquarters

HQ city

Chelmsford

HQ country

United Kingdom

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Subsea Cable Installation Services: Installation services for submarine cable systems including fibre optic cables for telecommunications and power cables for offshore wind and interconnects. Covers shore-end and offshore cable installation activities.
2. Subsea Cable Maintenance Services: Maintenance operations covering 33% of the world's fibre optic cables through maintenance agreements. Includes cable repair, fault prediction, and ongoing support.
3. Subsea Cable Data Services: Route engineering, permitting, survey services, and cable data subscription services (GeoCable Light, GeoCable Pro) for telecom and power cable projects worldwide.
4. Cable Jointing Equipment and Training: Universal Joint (UJ) and Universal Quick Joint (UQJ) tools, equipment, testing laboratory services, and training qualifications. In 2024: record number of UJ kits dispatched, 64 students trained, 55 cable combinations qualified, 101 tests completed at UKAS accredited lab.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Global Marine Group provides end-to-end solutions for the submarine cable industry through three business units: Global Marine handles fibre optic cable installation and maintenance for telecommunications and oil & gas markets using its fleet of vessels; OceanIQ delivers subsea cable data, survey, route engineering, permitting and consultancy services anchored by the GeoCable database covering over 3 million kilometres of mapped cable data; and SubConnect provides subsea cable jointing solutions including Universal Joint (UJ) and Universal Quick Joint (UQJ) tools, testing, training and SMART cable interconnectivity solutions.

Product overview

Global Marine Group is a comprehensive, end-to-end solutions provider to the submarine cable industry offering a portfolio of three core business units. The group provides solutions covering the entire lifespan of submarine cable systems, from consultancy and engineering (OceanIQ) through installation and maintenance (Global Marine) to jointing and interconnectivity (SubConnect). OceanIQ delivers subsea cable data, survey, route engineering, permitting, and consultancy services, with its flagship GeoCable database containing over 3 million kilometres of mapped cable data covering 97% of fibre optic and 90% of power cable globally. Global Marine provides fibre optic cable installation and maintenance for telecommunications and oil & gas markets, operating a fleet of vessels. SubConnect offers Universal Joint and Universal Quick Joint tools, cable testing services at its UKAS accredited laboratory, training and qualification services, and innovative interconnectivity solutions including SMART cable technology for scientific monitoring.

Differentiator

Problem solved

Functional benefit

Brands

• Global Marine: Specialists in fibre optic cable installation and maintenance solutions to the telecommunications and oil & gas markets
• OceanIQ
• SubConnect
• GeoCable

Products and services

• Global Marine - Cable Installation and Maintenance Fibre optic cable installation and maintenance solutions serving telecommunications and oil & gas markets, providing shore-end and offshore cable operations through a fleet of vessels and maintenance agreements covering approximately 33% of the world's fibre optic cables.
• OceanIQ - Cable Data, Survey and Engineering Services Subsea cable data, survey, route engineering, permitting and consultancy services for telecom and power cable projects, including the GeoCable database with over 3 million kilometres of mapped cable data.
• SubConnect - Subsea Cable Jointing Solutions Subsea cable jointing solutions including Universal Joint (UJ) and Universal Quick Joint (UQJ) tools, cable testing at UKAS accredited laboratory (No 9277), training and qualification services, and interconnectivity solutions for submarine telecommunications and power transmission cables.
• GeoCable Subscription Database Submarine cable database containing over 3 million kilometres of cable data, covering 97% of all fibre optic cable and 90% of all power cable, including over 6,000 historic cable faults. Offered via subscription tiers GeoCable Light and GeoCable Pro.
• DXr1 Digital X-Ray Camera Digital radiography camera used to inspect the integrity of submarine cable joints following jointing and repair operations, eliminating the need for film technology with approximately 75% time savings and instant image availability.
• SMART Cable Interconnectivity Solutions Science Monitoring And Reliable Telecommunications (SMART) cable interconnectivity solutions integrating seismometers and environmental sensors into telecommunications cable repeater housings for subsea sensing and ocean monitoring.
• Cable Fault Heat Map and Prediction Reports Solution enabling customers to visualise historical cable faults and access prediction reports for planning and preparation of future submarine cable systems.
• Universal Joint (UJ) and Universal Quick Joint (UQJ) Equipment, Testing and Training UJ and UQJ jointing tools, cable testing services at the UKAS accredited laboratory (No 9277), and industry-accredited training qualifications for cable jointing.

Quantifiable outcome

• 80 units of DXr1 cameras delivered worldwide
• +2 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered minor and core.

• Meachers Global LogisticsminorStrategic or Co-development Partner · 1 October 2025Partnership for sustainability initiatives including wooden cable reel and pallet reuse projects benefiting local communities and wildlife, and marine rope repurposing for UK wildlife parks.
• SMD (Soil Machine Dynamics)coreTechnology or Integration · 1 May 202530-year partnership with over 27 collaborative projects. SMD sold its 100th plough (Plough M) to Global Marine. Plough M designed for true 2m burial depth for ultimate cable protection with low fuel consumption.
• Ocean Networks CanadaminorStrategic or Co-development Partner · 1 February 2024Cable Innovator vessel completed Neptune Observatory cable laying project in Cascadia Basin for ocean observation infrastructure.
• National Institute of Geophysics and Vulcanology of Italy (INGV)minorStrategic or Co-development Partner · 1 January 2024Collaboration on the InSEA SMART cable system deployment monitoring Adriatic and Eurasian tectonic plates. Global Marine provided interconnectivity solutions for repurposed telecommunications repeater housings.
• Keppel LtdcoreStrategic or Co-development PartnerGlobal Marine Group is now part of the Keppel Ltd. portfolio. Participation in Keppel NEXT innovation forum in Singapore showcasing expertise and exploring new opportunities within the Keppel ecosystem.
• Universal Joint ConsortiumcoreTechnology or IntegrationFounding member of the Universal Joint Consortium offering industry accredited UJ and UQJ training facilitated by experienced team at training school in Chelmsford, UK.

Scale indicators8 records

Recent moves8 records

Expansion highlights7 records

Direct peers

• SubCom: SubCom (formerly TE Subcom) is the leading US-based submarine cable installation and maintenance contractor, operating a fleet of cable ships serving global telcos and hyperscalers. Directly comparable to Global Marine in installation, maintenance, and system supply scope.
• Alcatel Submarine Networks (ASN): ASN is one of the largest submarine cable system suppliers and installers globally, manufacturing wet plant and providing turnkey cable systems. Overlaps with GMG on installation/maintenance and competes on consortium cable systems.
• NEC Submarine Networks: NEC Submarine Networks is a Japanese system supplier and installer of submarine fiber optic cable systems, competing for hyperscaler and telco consortium builds globally. Comparable wet-plant manufacturing and installation offering.
• NTT World Engineering Marine: Operates the largest dedicated cable ship fleet in the world and provides installation/maintenance services for submarine cables. Direct competitor in maintenance zone agreements and installation projects.
• Orange Marine: Orange Marine (formerly France Telecom Marine) operates cable ships providing installation, maintenance, and repair services to telecom operators worldwide. Comparable service portfolio and customer base to Global Marine.

Broad incumbents

• Prysmian Group: Prysmian is the world's largest cable manufacturer with submarine cable system capabilities and installation services for both telecom and power cables. Overlaps with GMG on power cable (offshore wind) and cable supply, but operates at a much broader scale.
• Subsea 7: Subsea 7 is a major subsea engineering, construction, and services contractor serving the offshore energy industry with significant cable installation capabilities for offshore wind. Adjacent to GMG's power cable services with much larger offshore services portfolio.
• Boskalis: Boskalis is a major Dutch marine contractor providing subsea cable installation services especially for offshore wind interconnectors and export cables. Comparable capability for power cable burial and route engineering on a much larger corporate scale.

Others

• TeleGeography: TeleGeography is the leading telecom market research and submarine cable intelligence provider. Not a direct competitor but publishes subsea cable mapping intelligence that parallels OceanIQ's GeoCable subscription services.

Emerging players

• CWind (part of Global Marine Group): CWind was acquired by Global Marine Group in 2016 for offshore wind engineering services. Sits within GMG's group on the power cable services side, relevant as a peer for offshore wind cable engineering capacity.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/GlobalMarineGr
• Facebookfacebook.com/GlobalmarinegroupGMG
• LinkedInlinkedin.com/company/globalmarinegroup

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Global Marine Group