Design Brief & Intent
The primary mission of the Bi-Loup 30 is secure, family-oriented coastal cruising with the built-in capability to dry out flat on its twin keels during low tide. Unlike many contemporary cruisers that required auxiliary beaching legs or featured high-maintenance swing-keels with vulnerable pivot pins and cables, the Bi-Loup 30 utilizes two solid, low-profile keel fins integrated into the hull's structure. This design allows the boat to stand upright on its own feet on sand or mud, opening up isolated tidal drying harbors and shallow anchorages that deep-draft yachts must avoid.
In terms of market positioning, the Bi-Loup 30 competed directly with lifting-keel models like the Beneteau Oceanis 311 or Jeanneau Sun Odyssey 30i, as well as the Feeling line of lifting-keelers. However, the Bi-Loup's twin-keel arrangement offered superior structural simplicity and lower long-term maintenance overhead compared to those complex mechanical systems. Wrighton's design brief prioritized interior comfort and livability to an extraordinary degree for a boat under 30 feet. The deckhouse is distinctively tall and pronounced, a feature that might polarize those seeking sleek, aggressive racing lines but one that pays massive dividends once step-down is made into the cabin. The interior boasts a remarkably warm, wood-finished aesthetic, featuring panoramic coachroof windows that flood the saloon with natural light and offer the sort of 360-degree visibility normally reserved for larger deck-saloon yachts. Headroom in the main cabin routinely exceeds 1.85 meters, welcoming taller sailors who would otherwise be hunched over in most sub-30-footers of this vintage.
Variations & Configurations
Throughout its production run, the Bi-Loup 30 was offered in a highly standardized layout optimized for cruising couples or small families. The interior features a twin-cabin configuration, including a private double berth tucked under the cockpit sole, an L-shaped galley, a dedicated forward-facing chart table, and a private head with a marine toilet and shower. The forward cabin is often arranged with a traditional V-berth, which can also be left open to the saloon to increase the feeling of interior space. The central saloon table converts into an additional double berth, allowing the vessel to sleep up to six people in comfort during short-term cruises.
The boat is driven by a fractional sloop rig, utilizing a large mainsail and a furling genoa. Under the water, the twin keels draw just 1.10 meters (approximately 3.6 feet), striking an ideal compromise between sailing ability and shallow-water access. While earlier iterations of the Bi-Loup range occasionally left assembly options to the owner (the famous "constructeur amateur" semi-kits), the 30 was primarily delivered as a factory-finished boat.
The model underwent a significant evolutionary transition around 2014-2015 when the bankrupt shipyard was acquired and reformed as Wrighton Bi-Loup SAS. Under this brief revival, the design was updated by naval architect Vincent Lebailly and rebranded as the Bi-Loup 90. While utilizing the same successful hull form, the updated model featured improved interior joinery and cabinet finishes designed to shed the somewhat basic, industrial look of early-generation models in favor of a more premium aesthetic aimed at competing with higher-end European brands. Auxiliary power is typically provided by a 21-horsepower Yanmar 3YM20 diesel engine, which is a robust, highly reliable upgrade over the standard 14-horsepower engines found on some early hulls.
Sailing Performance & Handling
With a displacement of 6,614 pounds, the Bi-Loup 30 is a moderate-displacement cruiser, as evidenced by its displacement-to-length (D/L) ratio of 183.2. This moderate weight, combined with a high ballast-to-displacement ratio of 40.01%, gives the vessel outstanding initial and secondary stability. It is a stiff boat that carries its sail plan well into a breeze, resisting excessive heel and providing a very reassuring, stable platform for family crews who might be intimidated by more tender designs.
The boat's sail area-to-displacement (SA/D) ratio stands at a generous 24.92, indicating a surprisingly potent power-to-weight ratio. This ample sail plan was intentional; it was designed to overcome the inherent hydrodynamic drag and increased wetted surface area associated with twin keels. In light air, the Bi-Loup 30 can feel somewhat sticky due to this extra friction, but as soon as the breeze builds, the generous sail plan wakes the hull up, allowing it to find its stride.
At the helm, the boat feels balanced and predictable, though the steering is less communicative than that of a deep fin-keeled club racer. Its twin-keel configuration does impose a performance penalty when sailing close-hauled. The boat cannot point as high to the wind as a deep-fin equivalent, and tacking angles are typically wider, often requiring the crew to sail slightly lower to maintain optimal speed through the water. The Comfort Ratio of 18.34 and Capsize Screening Formula of 2.1 underscore its identity as a modern, wide-beam coastal cruiser. It has a relatively quick, modern motion in a seaway rather than the slow, heavy roll of a traditional full-keeled offshore voyager, and its Category B rating defines it as an exceptionally safe, highly capable platform for coastal hops and channel crossings, though not designed for extreme high-latitude survival.
Known Issues & Triage
For prospective buyers of a used Bi-Loup 30, the primary focus of any pre-purchase survey must be the hull-to-keel joints. Because twin-keel boats are designed to bear the entire weight of the vessel on their keels when drying out, the structural grid, internal floor frames, and keel bolts are subjected to intense vertical and lateral loads over time. Inspectors should carefully examine the bilge areas and the fiberglass surrounding the keel backing plates for any signs of crazing, gelcoat cracking, or structural movement. Any evidence of water weeping or rust around the keel bolts warrants immediate, deeper inspection.
Another area that requires regular maintenance is the large panoramic plexiglass coachroof windows. While they provide magnificent natural light, the large surface area is subject to torsional deck flexing under sail, which can cause the original adhesive sealant to degrade over time. Leaks here are not uncommon on older boats and can result in water damage to the wooden interior paneling below. Re-bedding these windows with high-grade marine polyurethane sealants is a tedious but highly necessary DIY or yard project.
Additionally, because the boat is often beached on sand, mud, or uneven rocky shingle, the rudder bushings and steering gear can experience unusual lateral forces. Owners should regularly check the rudder shafts for play or stiffness. Soft spots in the deck coring, particularly around high-load areas like the mast step or the bow pulpit, should also be assessed with a moisture meter to rule out delamination or water intrusion into the balsa sandwich core.
Modernization & Upgrades
Among veteran owners of the Bi-Loup 30, one of the most highly recommended upgrades is the replacement of the standard fixed two-blade propeller with a high-performance three-blade feathering or folding propeller. Because the twin-keel configuration already introduces substantial drag, a folding or feathering prop significantly cleans up the water flow under the stern, with owners reporting speed increases of up to one full knot under sail and a vast improvement in reverse thrust and maneuverability when docking.
Given the boat's excellent suitability for off-grid, shallow-water anchoring, many owners also choose to modernize the electrical system. Installing a stern-mounted stainless-steel arch allows for the dual-purpose mounting of solar panels and a dinghy davit system. When paired with a modern lithium iron phosphate (LiFePO4) service battery bank, this setup allows the Bi-Loup 30 to remain entirely self-sufficient at anchor without the need to run the engine to charge the refrigerator, autopilot, or electric windlass.
The Verdict
The Bi-Loup 30 is a niche, highly practical coastal cruiser that prioritizes spatial comfort, beachability, and ease of handling over raw racing performance. It is a rare find outside of French and British coastal waters, but for the cruising couple or family seeking to explore shallow bays, tidal estuaries, and drying harbors, it represents an incredibly reassuring and structurally sound option.
Pros:
- Twin-keel design allows stable, worry-free beaching and access to shallow anchorages.
- High ballast-to-displacement ratio provides excellent stiffness and safety in a blow.
- Superb interior headroom and 360-degree panoramic visibility.
- Generous sail area ensures decent cruising speeds once the breeze fills in.
- Reliable, robust Yanmar diesel drivetrain offers easy maintenance.
Cons:
- High wetted surface area limits performance in light air and drifting conditions.
- Tacking angles are wider and pointing ability is inferior compared to fin-keel competitors.
- Distinctive, tall deckhouse profile may not appeal to traditionalists.
- Large cabin windows are prone to leaks and require periodic re-bedding.
- Keel-to-hull joints demand regular, rigorous inspection due to grounding stresses.
