The first multihull entirely designed by VPLP
Ocean Fifty trimaran launched in September 2020 at Persico Marine, in Nembro (Italy). First multihull fully developed by VPLP Design using their own structural calculation tools. Launched forFabrice Cahierc under the namePlanet Warriors, thenCiela Village, the boat was taken over byErwan Le Roux and renamedKoesio for the 2021 Transat Jacques Vabre.
K-shaped hull and long cockpit
The platform is based on two K-shaped beams with a rear beam extended to the mast base. The cockpit, installed along the central hull, is almost twice as long as on other boats in the fleet and fully sheltered. The structural work results in a weight of 3,200 kg, making it the lightest platform in the Ocean Fifty class.
Specifications
- Designers: VPLP Design
- Builder: Persico Marine (Nembro, Italy)
- Launched: September 2020
- Length: 15.24 m — beam: 15.20 m — draft: 3.50 m — air draft: 21.77 m
- Sail area: 177 m² upwind / 265 m² downwind
- Platform displacement: 3,200 kg
- Materials: carbon / fiberglass composite
Electronic wheel steering (2024)
In 2024, Koesio became the first Ocean Fifty fitted with an enhanced electronic wheel steering system linked to a next-generation autopilot. System developed by MerConcept (integration), Mobius (L300-700 actuator) and Madintec (electronics and software).
Boat achievements under Erwan Le Roux
- Route du Rhum 2022 — winner (Le Roux, 10 days 21 hours 35 minutes 52 seconds, 18 minutes 13 seconds ahead of Arkema).
- Pro Sailing Tour 2023 — overall winner (Le Roux, Audrey Ogereau, Steven Liorzou).
- Transat Jacques Vabre 2021 — 2nd with Xavier Macaire.
- Capsized on October 26, 2025 off Guernsey during the Transat Café L'Or; crew airlifted by CROSS Jobourg.
