Vessel operator North Star will be the first to deploy a new service operation vessel (SOV), developed by Chartwell Marine and Vard.
The Midi-SOV is a 55-metre offshore wind craft ready for build in the European, Asian, and US markets.
North Star has entered an agreement with Chartwell and Vard becoming the first to adopt and use the Midi-SOV on offshore wind projects, investing in upfront design fees to facilitate vessel construction for European operations.
The Midi-SOV design addresses challenges in the offshore wind sector by bridging the gap between crew transfer vessels (CTVs) and SOVs, providing enhanced comfort and workability while offering a cost-effective alternative to full-scale SOVs.
With a design that has been optimised based on operational data to meet the niche requirements of offshore wind developers and operators, the Midi-SOV is intended to directly complement existing fleets.
Attributes of the Midi-SOV include its ability to enhance project economics through increased yield and scalability, while also improving access with year-round availability, even in adverse weather conditions, providing 13 additional hours of access per day compared to some CTV models during winter months.
Andy Page, Managing Director at Chartwell Marine, said: “We designed the Midi-SOV with a clear vision of its integration into future offshore wind fleets, filling the gap that had emerged between CTVs and SOVs and addressing key operational challenges as the wind industry evolves.
“Together with Vard, we have been very encouraged by the positive response we’ve received from offshore wind operators, underscoring the industry’s readiness for new solutions that enhance efficiency, safety, and overall project costs.
“And, of course, we are delighted to continue our collaborative relationship with North Star as they take a leading role in bringing this vessel from design to reality.”
Andrew Duncan, Renewables and innovations Director at North Star, added: “Our assessment has shown that the Midi-SOV has a key role to play in European offshore wind vessel fleets, particularly as activity ramps up in the North Sea and the Baltics.
“We’re excited about the operational versatility the design can give us, as well as the high standards of safety, availability and cost efficiency it promises – and proud to play our part in bringing the first Midi-SOVs to market.”


