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Following a collision at the start of The Ocean Race Europe, the IMOCA Holcim-PRB returned to the port of Kiel for a complete inspection and refit. The work, carried out in coordination with the Knierim Yachtbau yard and the boat's technical team, focuses on precision and safety, two imperatives for a return to sea in optimum conditions.
Structural inspection and damage diagnosis
Prior to any intervention, a detailed assessment of the hull and appendages was carried out. The structural analysis made it possible to pinpoint areas weakened by the impact, particularly on the starboard side of the hull. This initial diagnosis determines the order of work and the choice of materials.
Cutting out and removing damaged sections
The repair began with a clean cut of the affected area, to eliminate any cracked or delaminated composite. This delicate stage requires special tools and constant monitoring of the boat's geometry, to preserve the hull's longitudinal rigidity and symmetry.
Carbon lamination and repair
Restoration is carried out using successive layers of carbon fiber impregnated with epoxy resin, applied under vacuum to guarantee compaction and adhesion. This process ensures a return to initial mechanical properties, resisting the torsional and compressive stresses typical of IMOCA ocean-going yachts.
Role of the Knierim Yachtbau shipyard
Based in Kiel, the Knierim Yachtbau yard has recognized expertise in the construction and repair of composite racing yachts. Joint intervention with Holcim-PRB's technical team enables us to combine craftsmanship and in-depth knowledge of the boat, optimizing the quality of the refit.
Objective: fast, safe return to navigation
Once the structure has been refurbished, the program includes a series of non-destructive tests â ultrasound, thermography â followed by sea trials to validate the performance and reliability of the repairs. The aim is a return to the water without compromising crew safety.
