Bernard - Nivelt

Joubert-Nivelt Design: Structural efficiency for the long haul

Founded in 1974 by the association of Michel Joubert and Bernard Nivelt, the La Rochelle-based firm has made its mark on naval architecture through rigorous technical pragmatism. With over 25,000 units produced, the agency built its reputation on operational duality: Michel Joubert (deceased in 2016) handled motor and shipping vessels, while Bernard Nivelt focused on designing performance sailing units.

The Joubert-Nivelt signature is based on the creation of versatile hulls, optimized to maintain high average speeds in difficult sea conditions. This approach, favoring form stability and reliable scantlings, has allowed the firm to establish itself in both large-scale production and cutting-edge prototypes.

A legacy of iconic hulls: Performance and series production

The firm's portfolio is distinguished by the exceptional longevity of its hulls on the market, whether they are one-design racing boats or offshore cruisers:

• Surprise (1976): Absolute benchmark for one-design classes (over 1,500 units). A hull characterized by low displacement and fine appendices that, fifty years after its design, remains the most dynamic racing platform in its category.
• A35 & A31 (Archambault): Sailboats that set the standards for the IRC rating in the 2000s. The A35, in particular, dominated the rankings with its balance between reduced wetted surface in light winds and stiffness in strong breezes.
• M34: Successor to the Farr 30 for the Tour de France à la Voile. A concentrate of composite technology (infusion construction, carbon mast) designed for high performance and simplified transport logistics.
• Sprint Range (95, 108): Lively racing-cruising units, pioneers in optimizing deck layouts for reduced crew maneuvering.
• Swift Trawler (Bénéteau): Groundbreaking architecture for the motor yacht segment, incorporating semi-displacement hulls that combine the autonomy of a trawler with top speeds exceeding 20 knots.
• Teasing Machine: A 13-meter IRC prototype, winner of the Sydney-Hobart race, demonstrating mastery of chine hulls for directional stability when running downwind.
• Fleur Australe: Philippe Poupon's expedition vessel, designed for polar navigation, showcasing extensive expertise in structural robustness.

Analysis of technical heritage

The firm's expertise has crystallized around its ability to translate complex rating rule constraints (IOR, then IRC and ORC) into intuitive hulls for users. Bernard Nivelt's work on appendages (bulb keels, high aspect ratio rudders) and Michel Joubert's on low-drag hulls for motor units have extended the commercial lifespan of models well beyond the usual cycles of the nautical industry.

Today, Joubert-Nivelt designs form the backbone of many racing and cruising fleets, testifying to a design philosophy where function dictates form, ensuring constant technical relevance in the face of evolving sailing practices.