GEOSEA NV
GEOSEA NV provides marine and offshore engineering, dredging, and environmental contracting solutions globally, delivering EPCI services — including foundations, cable installation, WTG installation, and subsea rock placement — to offshore wind developers and oil & gas operators using a fleet of DP2/DP3 vessels.
- Company typePrivate
- Founded2005
- HeadquartersZwijndrecht, Belgium
- Headcount1,001–5,000
- GTM typeB2B
- OfferingServices
What GEOSEA NV does
GEOSEA NV, headquartered in Zwijndrecht, Belgium, is a marine and offshore engineering, dredging, and environmental contracting company founded in 2005. The company operates within the offshore oil, gas, and renewables industry, delivering EPCI (Engineering, Procurement, Construction, Installation) services to global clients. Its service portfolio spans foundations installation (large diameter piles, Gravity Based Foundations, and suction pile technology via subsidiary SPT Offshore), power cable and umbilicals installation, wind turbine generator (WTG) installation, geoscience and site investigation services, landfall construction, subsea rock placement, and platform installation/decommissioning/heavy lift.
The company's core technology centers on a high-tech fleet of self-propelled DP2 and DP3 installation and heavy lift jack-up vessels with exceptional transport, load, and crane capacity. Its flagship asset, the Living Stone, is a DP3 cable installation vessel with 10,000-tonne cable capacity and a cutting-edge dual-lane cable system that allows simultaneous cable installation and preparation. Additional proprietary tools include XL offshore subsea drills for large-diameter pile installation, CBT 1100 trenching tools, and DP2 fallpipe vessels with active heave-compensated ROVs enabling pinpoint rock placement in depths exceeding 2,000 meters.
GEOSEA NV monetizes through project-based EPCI contracts and specialized vessel services with offshore wind developers and oil & gas operators globally. The company pursues an enterprise field sales motion with dedicated tender teams managing international tenders. Pricing is project-specific and quote-based. Notable project references include the 467 km export cable installation at Hornsea One (UK) and the 85 km Modular Offshore Grid (Belgium), and a cumulative track record of more than 2,700 WTGs installed. The company does business in part as DEME Offshore and is operationally linked to DEME Group.
GEOSEA NV firmographics
Firmographics- Name
- GEOSEA NV
- Legal name
- DEME Group
- Website
- https://geosea.be
- Company type
- Private
- Founded year
- 2005
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- GEOSEA NV provides marine and offshore engineering, dredging, and environmental contracting solutions globally, delivering EPCI services — including foundations, cable installation, WTG installation, and subsea rock placement — to offshore wind developers and oil & gas operators using a fleet of DP2/DP3 vessels.
- Ownership category
- akta.pro rank
GEOSEA NV industry classification
Industry- Product category
- Offshore Marine Engineering & EPCI Services
- NAICS
- Support Activities for Water Transportation (4883), Geophysical Surveying and Mapping Services (541360), Geophysical Surveying and Mapping Services (54136)
- SIC
- Oil & Gas Field Services, Nec (1389), Oil & Gas Field Exploration Services (1382)
- akta.pro primary industry
- Offshore Support & Marine Logistics Vessel Operators (PSV/AHTS) (TLADABAL)
- akta.pro secondary industries
- Pipe-lay & Heavy-lift Offshore Vessel Construction (IMAJACAE), Offshore Marine & Aviation Support (PSVs, AHTS, Crew Boats, Helicopters) (EUALABAJ)
Keywords
Where GEOSEA NV is headquartered
LocationHeadquarters
- HQ city
- Zwijndrecht
- HQ country
- Belgium
- HQ region
- Europe
Markets served
GEOSEA NV business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Infrastructure, Personnel, Operations, Technology or R&D, Supply Chain
Revenue model
- Offshore EPCI Projects: Full Engineering, Procurement, Construction, and Installation contracting for offshore wind farms and oil & gas projects. Services include foundations installation, turbine installation, cable installation, substation installation, and decommissioning. Revenue generated through large-scale project contracts with complete in-house capabilities.
- Specialized Vessel Services: Provision of specialized offshore vessels and equipment including heavy lift vessels, cable installation vessels, fallpipe vessels, and jack-up barges for specific project phases including transport, installation, and decommissioning services.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels2 records
GEOSEA NV product offering
Product offeringCore offering
GEOSEA NV delivers marine and offshore engineering, dredging, and environmental contracting services to global clients in the offshore wind and oil & gas industries. The company provides turnkey EPCI (Engineering, Procurement, Construction, Installation) solutions covering offshore foundations, submarine power cables and umbilicals, wind turbine generator installation, subsea rock placement, geoscience surveys, landfall construction, and platform installation/decommissioning, executed using a high-tech fleet of self-propelled DP2 and DP3 vessels and heavy lift jack-up vessels.
Product overview
DEME Group operates as a global solutions provider in the offshore oil, gas and renewables industry, offering a comprehensive portfolio of specialized services unified by high-tech vessel capabilities. The core offerings include foundations installation (large diameter piles, Gravity Based Foundations, suction pile technology), power cable and umbilicals installation, wind turbine generator installation, geoscience services, landfall construction, subsea rock placement, and platform installation/decommissioning. The company differentiates through its state-of-the-art fleet of self-propelled DP2 installation and heavy lift jack-up vessels. Key vessels include the Living Stone (DP3 cable installation vessel with 10,000-tonne capacity) and specialized fallpipe vessels for rock placement. Services are delivered through an EPCI (Engineering, Procurement, Construction, Installation) model providing turnkey solutions.
Differentiator
Problem solved
Functional benefit
Products and services
- Offshore Foundations Installation Installation and construction services for offshore foundations including large diameter piles, Gravity Based Foundations, and suction pile technology for offshore wind farms and marine structures. Includes drilling and hammering of XL diameter piles using innovative offshore subsea drills, soft soil improvement techniques (vibro compaction, vibro stone columns, soil mixing, grouting), and silent/vibration-free suction pile installation via SPT Offshore. Targeted at offshore wind developers and operators.
- Power Cables and Umbilicals Installation Complete submarine power cable and umbilical installation services including supply of cables, accessories and cable protection systems, seabed clearance and route preparation, pre-lay dredging, trenching, cable laying, post-lay burial, protection of crossings, landfall construction, termination and testing. Delivered for offshore wind infield cable networks, export cable connections, and country-to-country interconnectors. Targeted at offshore wind developers, utilities, and interconnector project owners.
- Wind Turbine Generators (WTGs) Installation Offshore wind turbine generator installation services covering in-house execution from initial seabed preparation through turbine and substation installation to inter-array and export cables, including next generation mega turbines and projects in the deepest waters and furthest from shore. Delivered as turnkey EPCI solutions to offshore wind developers and operators to accelerate clean energy generation.
- Geoscience Services Full package of geoscience services including offshore geotechnical and geological site investigations, geophysical marine and environmental surveys, deep-sea engineering services, integrated studies combining geotechnical site investigation with environmental impact assessment and installation/foundation/burial monitoring, and seabed clearance campaigns (unexploded ordnance, wrecks, cables, boulders). Targeted at offshore wind farm developers, oil & gas platform operators, and cable route planners.
- Landfall Construction Construction services for offshore pipeline, cable and umbilical landfalls covering seabed preparation, trenching, pipe pulling, backfilling, and a range of landfall techniques including conventional beach approach, directional drilling, and microtunnelling, with pipe pulling options from onshore or offshore winches, onshore sheave block from lay barge, or controlled surface tow. Targeted at major pipe-laying contractors and operators worldwide.
- Subsea Rock Placement Subsea rock placement services for cable and pipeline protection and seabed preparation using DP2 fallpipe vessels achieving pinpoint precision with excellent levelling abilities in depths exceeding 2,000 meters, equipped with active heave-compensated ROVs for precision steering. Targeted at offshore wind cable projects, oil & gas pipeline operators, and subsea infrastructure owners.
- Platform Installation, Decommissioning and Heavy Lift Integrated approach to offshore platform installation and decommissioning covering the entire process from planning and engineering through to removal, transport, onshore disposal, and recycling, leveraging the company's high-tech heavy lift vessels. Targeted at oil & gas operators with ageing offshore installations and new platform projects.
- Floating Offshore Wind Services Engineering, design, and EPCI contracting services for floating offshore wind projects including mooring installation, cable installation, WTG installation, and design/construction methodology for floating foundations (e.g., FEED study for Hywind Tampen floating concrete spar foundations). Targeted at floating offshore wind developers and operators.
Quantifiable outcome
- 467 km export cable installation at Hornsea One — longest AC offshore wind export cable project ever installed
- +2 more outcomes
Companies that use GEOSEA NV
Customer profileNamed customers10 records
Segments2 records
Ideal customer profiles2 records
GEOSEA NV technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
GEOSEA NV partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and secondary.
- SPT OffshorecoreSubsidiary specializing in suction pile anchors and foundations. Suction pile technology offers silent and vibration free installation method requiring no expensive noise mitigation measures or shutdowns. Vessel time offshore is substantially reduced, reducing CO2 and NOx emissions. Also applicable for floating offshore wind industry.
- Equinor ASAcoreDEME performed front-end engineering and design (FEED) study on the Hywind Tampen project in Norway, consisting of 11 floating concrete spar foundations. Scope included developing and optimising design and construction methodology for foundations, including secondary steel outfitting, mooring arrangement and project execution strategy.
- MPVAqua ConsortiumsecondaryDEME is part of MPVAqua consortium developing a cost-competitive concept for floater structure to support large, offshore floating PV solutions in Belgium.
- WindEurope FOW CommitteesecondaryIndustry membership organization for floating offshore wind advocacy, standards development, and industry collaboration.
Scale indicators4 records
Recent moves6 records
Expansion highlights6 records
GEOSEA NV competitors and assessment
Company assessmentDirect peers
- Jan De Nul Group: Belgian-headquartered marine contractor offering offshore installation, cable laying, and dredging services. Closest direct peer to GEOSEA/DEME, with overlapping capabilities in offshore wind foundations, cable installation, and heavy lift across the same European customer base.
- Van Oord: Dutch marine contractor operating in offshore wind installation (foundations, cables, WTGs) and dredging. Direct competitor on major European offshore wind tenders and a like-for-like provider of EPCI services for subsea cable and foundation installation.
- Royal Boskalis Westminster: Large Dutch marine services group active in offshore wind (foundation and cable installation), subsea services, and dredging. Competes head-to-head on most large European offshore wind EPCI scopes and shares similar DP2/DP3 vessel requirements.
- Saipem: Italian offshore EPCI contractor for oil & gas and offshore wind, with proprietary pipelay and heavy-lift vessels. Direct competitor on large offshore EPCI tenders and a key peer in cable laying, platform installation, and decommissioning.
- Subsea 7: Global seabed-to-surface contractor for offshore energy, with comparable SURF (subsea, umbilicals, risers, flowlines) and offshore wind capabilities. Competes on cable installation, heavy lift, and life-of-field O&G subsea services.
- McDermott International: Offshore EPCI contractor for oil & gas and emerging offshore wind markets, with proprietary heavy-lift and pipelay fleet. Direct peer in integrated offshore installation and decommissioning scopes.
- Heerema Marine Contractors: Dutch offshore heavy-lift and transportation/installation contractor operating some of the world's largest crane vessels. Direct peer in heavy lift, platform installation, and decommissioning, though less focused on cable laying than GEOSEA.
Emerging players
- Cadeler (formerly Swire Blue Ocean/Eneti): Pure-play offshore wind turbine and foundation installation vessel operator. Emerging direct competitor in WTG installation specifically, having rapidly expanded its fleet of next-generation installation vessels to serve the same European offshore wind developers.
Broad incumbents
- TechnipFMC: Large integrated subsea and surface energy services provider with deep EPCI capability across offshore oil & gas. Broader incumbent overlap in integrated subsea scopes; less directly exposed to European offshore wind cable/foundation installation.
Regional players
- Bourbon (offshore marine services): French offshore marine vessel operator historically focused on PSV/AHTS support to oil & gas. Regional peer in offshore vessel support services, though not a direct competitor in GEOSEA's core cable/foundation installation niches.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
GEOSEA NV social profiles
Digital presenceGEOSEA NV financial estimates
Financial estimateRevenue estimate
Valuation estimate
GEOSEA NV leadership team
Management profileNumber of profiles
GEOSEA NV subsidiaries and ownership
Company hierarchySubsidiaries1 record
GEOSEA NV funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
GEOSEA NV M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about GEOSEA NV
What does GEOSEA NV do?
GEOSEA NV delivers marine and offshore engineering, dredging, and environmental contracting services to global clients in the offshore wind and oil & gas industries. The company provides turnkey EPCI (Engineering, Procurement, Construction, Installation) solutions covering offshore foundations, submarine power cables and umbilicals, wind turbine generator installation, subsea rock placement, geoscience surveys, landfall construction, and platform installation/decommissioning, executed using a high-tech fleet of self-propelled DP2 and DP3 vessels and heavy lift jack-up vessels.
Is GEOSEA NV a public or private company?
GEOSEA NV is a private company. It is classified as unknown and is currently operating.
When was GEOSEA NV founded?
GEOSEA NV was founded in 2005. It employs 1,001 to 5,000 people.
Where is GEOSEA NV based?
GEOSEA NV is headquartered in Zwijndrecht, Belgium, in the Europe region.
How does GEOSEA NV make money?
Two revenue lines are on record. Offshore EPCI Projects are the primary driver. The others are specialized Vessel Services.
Who are GEOSEA NV's main competitors?
Direct peers on record are Jan De Nul Group, Van Oord, Royal Boskalis Westminster, Saipem, Subsea 7, McDermott International and Heerema Marine Contractors. Cadeler (formerly Swire Blue Ocean/Eneti) is listed as an emerging player. TechnipFMC is listed as a broad incumbent. Bourbon (offshore marine services) is listed as a regional player.
Does GEOSEA NV have an API?
No public API is recorded for GEOSEA NV.
What industry is GEOSEA NV in?
GEOSEA NV's product category is Offshore Marine Engineering & EPCI Services. Its primary akta.pro industry code is TLADABAL, Offshore Support & Marine Logistics Vessel Operators (PSV/AHTS), with a secondary code of IMAJACAE, Pipe-lay & Heavy-lift Offshore Vessel Construction. Its NAICS code is 4883 and its SIC code is 1389.