Hywind Scotland: Main component exchange at floating wind scale

Floating offshore wind is entering a new era. The focus is shifting from installation to long-term asset performance, and that means the industry must be prepared to execute complex maintenance campaigns at a scale never seen before.

For Hywind Scotland, Global Maritime was entrusted with managing what became the world's largest floating offshore wind main component exchange campaign to date.

The scope was extensive. It included offshore campaign management, mooring disconnections, towing operations, cable laydown and reconnection, lifting analyses, barge logistics and assembly-site coordination. Activities that would traditionally be treated as separate workstreams were brought together into one integrated operation with a single objective: complete the exchange safely and efficiently within an ambitious schedule.

Challenges

Main component exchange campaigns in floating wind involve far more than replacing equipment.

Every activity affects the wider system, from moorings and export cables to vessel logistics and assembly-site operations. Planning one activity in isolation was not an option. Every interface needed to be understood, coordinated and executed in sequence.

Adding to the challenge was the project timeline. The campaign required multiple complex marine operations to be completed while maintaining safety, quality and operational control throughout.

One operation. One team.

Global Maritime integrated engineering, marine operations and offshore management into a single campaign structure.

The team coordinated offshore execution, managed towing activities, supported cable reconnection works and performed lifting analyses for blade and nacelle replacement operations. The result was a delivery model that provided visibility and control across the entire campaign.

Results

The campaign was completed without incidents and delivered within a highly demanding schedule.

More importantly, it demonstrated that major component exchanges on floating offshore wind assets can be executed safely and efficiently at scale. The project established a benchmark for future maintenance campaigns as floating wind continues to mature globally.

Lessons learned

As floating offshore wind moves into long-term operation, maintenance strategies become just as important as installation strategies.

The Hywind campaign reinforced the value of bringing engineering, marine operations and offshore execution together from the earliest planning stages. Integration improves decision-making, reduces operational uncertainty and creates safer, more efficient outcomes.

This is not business as usual.

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