Retrofit and Vessel Conversion Services at Green Yard
Green Yard is a leader in sustainable vessel retrofitting and conversion, providing innovative solutions for maritime operators across the globe. With locations in Ulsteinvik and Feda, Green Yard Kleven and Green Yard Feda specialize in transforming vessels to meet modern operational needs, increase efficiency, and reduce environmental impact. Our retrofit and conversion services cater to a wide range of vessels, including offshore support vessels (OSVs), platform supply vessels (PSVs), and specialized vessels for subsea operations.
Why Choose Green Yard for Retrofit and Vessel Conversion?
Sustainability Commitment: Green Yard focuses on sustainable retrofit solutions, including hybridization, energy efficiency upgrades, and reusing materials to minimize environmental impact and reduce costs.
Tailored Solutions: Each project is customized to meet the specific needs of the vessel and its owner, ensuring that the retrofit or conversion enhances operational efficiency and performance.
Global Expertise: With decades of experience in the maritime industry, Green Yard has the expertise and infrastructure to handle large-scale retrofit and conversion projects for vessels of all types.
Regulatory Compliance: Green Yard’s retrofit and conversion services adhere to the highest international maritime regulations, ensuring that all modifications are safe, reliable, and fully compliant.
Key Retrofit and Conversion Services Offered:
Hybridization and energy-efficient upgrades
Subsea and offshore support vessel conversions
Customization of vessel interiors and accommodations
Reclassification and system upgrades for modern operational needs
Sustainable practices including equipment reuse and material recycling
For high-quality, sustainable retrofit and vessel conversion services, Green Yard is your trusted partner. Contact us today to discuss how we can help extend the life and improve the performance of your vessel through expert retrofit solutions.v
Key Retrofit and Conversion Projects at Green Yard (2022–2025)
Oceanicasub VIII & IX – PSV to ROV Support Vessel Conversions (2022–2023)
Green Yard Kleven successfully converted two 80-meter platform supply vessels (PSVs) into advanced ROV support vessels for subsea inspection and intervention services. The retrofit included adding mezzanine decks for ROV operations, expanding crew accommodations, and refurbishing second-hand cranes, reducing the environmental footprint through reusing materials. These conversions demonstrated Green Yard’s ability to give older vessels new life while meeting the demanding needs of modern offshore operations.
Oceanicasub X & XI – AHTS to Subsea/ROV Vessel Conversions (2023–2024)
As part of a continued partnership with Oceanica, Green Yard Kleven converted two anchor-handling tug supply (AHTS) vessels into subsea support ships. The project involved installing new ROV launch systems, additional accommodation spaces, and updating all essential vessel systems. These retrofits maintained a strong focus on sustainability, with reused components and materials wherever possible. The vessels are now equipped for advanced subsea operations in challenging environments.
Oceanicasub XVII – AHTS to ROV Support Vessel Conversion (2025 ongoing)
Green Yard Kleven’s latest project with Oceanica involves the conversion of the Oceanicasub XVII, a 87-meter AHTS vessel, into a specialized ROV support vessel. The conversion includes the addition of ROV mezzanine decks, upgraded accommodations, and a complete overhaul of vessel systems to ensure its capabilities for deepwater subsea operations. This project prioritizes sustainability by reusing equipment and minimizing the use of new materials.
CS Vega II – Walk-to-Work Vessel to Cable Layer (2023–2024)
The CS Vega II underwent an extensive conversion at Green Yard Kleven to become a modern cable-laying vessel for subsea telecom cables. The retrofit included installing new cable-handling equipment, cranes, and a cable-lay system. Notably, the project saved significant CO₂ emissions by reusing the existing hull and equipment, making it an environmentally friendly alternative to building a new vessel. The CS Vega II now serves NTT World Engineering Marine, supporting critical subsea infrastructure projects.
Geoquip Silvretta – PSV to Geotechnical Drillship (2024–2025)
Green Yard Kleven is currently converting the Geoquip Silvretta, a platform supply vessel (PSV), into a geotechnical drillship for offshore site investigations. This retrofit involves the installation of a large drilling rig, new moonpool, and additional accommodation and laboratory spaces. The project emphasizes energy efficiency and sustainability, with a focus on reusing existing materials and integrating low-carbon technologies.
Ross Eagle – OSV to Subsea Survey/ROV Vessel (2024–2025, Feda)
At Green Yard Feda, the Ross Eagle, an offshore support vessel (OSV), is being converted for subsea survey and ROV operations. The project includes the addition of a heavy-duty A-frame, winch system, and ROV systems to support North Sea offshore wind and oil & gas projects. This conversion highlights Green Yard Feda’s ability to provide efficient and cost-effective retrofits that extend the service life of existing vessels.
We take on all types of repairs and retrofits for all kinds of vessels.
This can be anything from small projects to large and complicated rebuilds and retrofits, such as hybridisation or custom projects for ship interiors. Good quay facilities and heavy lift capacity. Working with the ship owner, we can contribute to concept development and help ship owners find the best solutions for new buildings or changes to a vessel.
The yard has a strong delivery record.
Green Yard Kleven is situated in Ulsteinvik, at the centre of the maritime cluster at southern Sunnmøre. The yard is part of Green Yard Group, along with sister yard Green Yard Feda at Angholmen, Norway. Green Yard Feda also offers all types of yard services, including rigging services.
Mobile Shipyard Services
We travel to your ship! Both Green Yard Kleven and Green Yard Feda carry out yard services on board your ship when it is suitable for the ship's operation, and in the port of your choice. We have a well-equipped service vehicle and a short response time. We can also receive the ship at both of our shipyards in Ulsteinvik and at Feda.
Contact mobile shipyard services:
Karl Johan Barstad,
tel. +47 94 16 53 70,
e-mail: kaba@greenyard.no
Kjell OIsen,
tel: +47 90 88 82 36,
e-mail: kjell.olsen@greenyard.no
Sindre Moldskred,
tel. +47 99 29 76 62,
e-mail: sindre.moldskred@greenyard.no
