Offshore construction plays a vital role in the global energy and infrastructure sectors. It involves the design, fabrication, installation, and maintenance of complex marine structures, including oil and gas platforms, offshore wind farms, and subsea pipelines. These high-stakes projects require cutting-edge technology, advanced engineering, and a strong commitment to both safety and environmental sustainability.
Below, we highlight the top 10 offshore construction companies in the world as of 2025. These industry leaders are recognized for their innovation, expertise, and global influence. Rankings are based on market presence, project scale, and their contributions to offshore development.
1. Saipem S.p.A. : One of the best offshore construction company
- Headquarters: Milan, Italy
- Overview: Saipem, a former subsidiary of Eni, is a major force in offshore engineering, procurement, and construction (EPC). It operates a sophisticated fleet of vessels, including the iconic Saipem 7000, one of the largest crane vessels globally.
- Recent Highlights: The company is expanding into offshore wind and carbon capture projects, aligning with global energy transition goals.
- Key Projects: Kashagan oilfield (Kazakhstan), Kaombo Ultra-Deep Offshore Project (Angola)
- Revenue (2023): ~$10 billion
2. TechnipFMC plc
- Headquarters: London, United Kingdom
- Overview: TechnipFMC delivers integrated offshore solutions, from subsea production systems to green energy innovations. With operations in over 40 countries, its influence spans the globe.
- Notable Strengths: Leadership in offshore wind, strong subsea engineering capabilities, and a workforce of over 20,000.
- Key Projects: Coral South FLNG (Mozambique), Arctic LNG 2 (Russia)
3. McDermott International, Ltd.: Top offshore construction company
- Headquarters: Houston, Texas, USA
- Overview: Known for delivering complex offshore infrastructure, McDermott has a strong global presence, especially in the Middle East and Asia.
- Innovation Focus: The company leverages digital tools to improve project efficiency and safety.
- Key Projects: Saudi Aramco’s Marjan and Zuluf Fields (Saudi Arabia), Tyra Redevelopment (Denmark)
4. Subsea 7 S.A.
- Headquarters: Luxembourg
- Overview: Subsea 7 provides seabed-to-surface solutions, specializing in subsea engineering and offshore renewables. Its advanced ROV technology and specialized vessels support deepwater operations.
- Sustainability Commitment: A front-runner in renewable energy initiatives and environmental responsibility.
- Key Projects: Seagreen Offshore Wind Farm (UK), Bacalhau Field (Brazil)
5. Fluor Corporation
- Headquarters: Irving, Texas, USA
- Overview: Fluor is a global EPC giant with a robust offshore portfolio. It manages everything from design to commissioning of complex marine facilities.
- Distinguishing Feature: Innovations in anti-pollution technology and large-scale LNG development.
- Key Projects: Al-Zour Refinery (Kuwait), LNG Canada Export Facility
- Revenue (2021): $15.66 billion
6. Sapura Energy Berhad
- Headquarters: Seri Kembangan, Malaysia
- Overview: Sapura Energy stands out as an integrated offshore contractor across pipeline installation, platform construction, and decommissioning.
- Global Reach: Active in over 20 countries, especially across Asia, Africa, and the Middle East.
- Key Projects: Pegaga Gas Field (Malaysia), East African Crude Oil Pipeline
7. Heerema Marine Contractors (HMC)
- Headquarters: Leiden, Netherlands
- Overview: Heerema specializes in heavy-lift and deepwater projects, boasting some of the world’s largest crane vessels, including Sleipnir and Thialf.
- Sustainability Focus: Uses low-emission vessels and eco-friendly practices in offshore construction.
- Key Projects: Hollandse Kust Zuid Wind Farm (Netherlands), Johan Sverdrup Field (Norway)
8. DeepOcean Group
- Headquarters: Haugesund, Norway
- Overview: DeepOcean provides comprehensive subsea services, from survey and ROV operations to cable laying for offshore renewables.
- Operational Focus: Emphasizes safety, innovation, and performance in challenging subsea environments.
- Key Projects: Hywind Tampen Floating Wind Farm (Norway), Nordsee One Wind Farm (Germany)
9. Enbridge Inc.
- Headquarters: Calgary, Canada
- Overview: Although best known for pipeline operations, Enbridge is increasingly involved in offshore construction and renewable energy development.
- Energy Transition Role: Active in supporting carbon-neutral and offshore wind projects.
- Key Projects: Line 3 Replacement Program, North Sea Offshore Wind Initiatives
10. Global Industries (TechnipFMC Subsidiary)
- Headquarters: Houston, Texas, USA
- Overview: Now part of TechnipFMC, Global Industries continues to deliver excellence in pipelaying, diving services, and marine construction.
- Fleet Capabilities: Utilizes a versatile fleet for EPC operations across the Gulf of Mexico and the MENA region.
- Key Projects: Saudi Aramco Offshore Infrastructure, Middle East EPC Contracts
Conclusion
In summary, the offshore construction industry is not only expanding but also transforming to meet new global energy demands. From traditional oil and gas infrastructure to cutting-edge wind and subsea projects, these top 10 companies are leading the charge. Their commitment to innovation, safety, and environmental stewardship ensures they remain at the forefront of offshore development well into the future.
Note: This ranking reflects publicly available data as of 2025. For the most current updates, consult industry reports and official company announcements.
1. What are offshore construction companies, and what services do they provide?
Offshore construction companies specialize in building and maintaining structures in marine environments. Their services include engineering, fabrication, installation, and maintenance of offshore oil and gas platforms, wind farms, and subsea pipelines. These companies often operate specialized vessels and equipment to handle complex, large-scale projects in deepwater or harsh conditions.
2. Which company is considered the global leader in offshore construction in 2025?
While there is no single definitive leader, companies like Saipem, TechnipFMC, and McDermott are recognized as top players in 2025 due to their global presence, extensive project portfolios, and technological expertise. Each excels in different areas, such as deepwater construction, subsea engineering, or offshore renewables.
3. How are offshore construction companies contributing to the global energy transition?
Many offshore construction companies are diversifying into renewable energy sectors like offshore wind and carbon capture. Firms such as Subsea 7, Heerema, and DeepOcean are actively involved in installing wind turbines and supporting environmentally sustainable infrastructure, aligning with global efforts to reduce carbon emissions.
Rimmy