25 Apr Manon-Yvon: A Major Vessel Transformation to Boost Fishing Performance and Capacity
Navanex recently completed a large-scale transformation of the Manon-Yvon, a fishing vessel owned by Pêcherie Lero inc. in the Magdalen Islands. Through a combination of naval architecture, production engineering, and stability analysis, our team modernized this 40-year-old vessel, enhancing its performance, capacity, and onboard functionality.
A Structural Modernization of a 40-Year-Old Vessel
The Manon-Yvon is a crab-fishing trawler with decades of experience at sea. Owner Yvon Thériault entrusted Navanex with a complete transformation to extend the vessel’s lifespan and upgrade its capacity and maneuverability. The mandate included:
- Designing a 15-foot hull extension with an integrated live hold;
- Performing a full stability analysis;
- Delivering detailed production engineering for shipyard execution;
- Integrating a bow thruster for enhanced maneuverability.
Overcoming a Challenging Hull Geometry
One of the main technical challenges was integrating the new midsection with the vessel’s highly shaped original hull. To meet this challenge, Navanex conducted a complete 3D scan of the vessel. This allowed our team to reproduce the hull digitally and precisely model the new extension for a seamless fit.
An Integrated Approach: From Design to Production
Navanex provided end-to-end support throughout the project:
- A preliminary stability analysis guided the design of the hold to meet safety and tonnage requirements;
- All technical plans were approved by Transport Canada, ensuring full regulatory compliance;
- A complete steel structure model was delivered to Chantier Naval Forillon, supporting efficient production at the shipyard.
Results: More Speed, Space, and Versatility
The Manon-Yvon was relaunched in March 2025, with significant gains:
- The vessel’s length increased from 18.5 m to 23.13 m;
- It now includes a 54 m³ live hold, enabling it to transport up to 45,000 lbs of live crab;
- Deck space has doubled, offering improved workflow and flexibility for the crew;
- During the transformation, the owner also modernized the fore hold and installed a new generator.
Expertise Serving Eastern Québec’s Marine Sector
This project highlights Navanex’s commitment to delivering comprehensive naval engineering solutions. Using 3D digitization and advanced modeling tools, our team ensured optimal results both in design and in production. Key contributors included Ahmed Kabbadj, Aaron Clark, Christophe Egger, and Charles Vézina.