Bi-Loup 77 Information, Review, Specs

Sailing Performance & Handling

The sailing characteristics of the Bi-Loup 77 are defined almost entirely by its twin-keel configuration. Unlike traditional fin-keeled boats of this size, the 77 utilizes two shallow-draft keels that act as stabilization "legs." While this setup inherently increases wetted surface area—slightly dampening light-air performance—the boat compensates with a generous sail plan and a hull form that carries its beam well aft. According to editorial insights from Voiles et Voiliers, Wrighton’s twin-keel designs often employ an asymmetrical foil profile, which generates lift even at lower speeds to counteract the leeway typically associated with shallow-draft vessels.

In terms of handling, the 77 is famously forgiving. It tracks well on a reach and displays a high degree of initial stability, which is a significant comfort factor for families with young children. However, sailors should expect a wider tacking angle than a monohull of similar length; the boat prefers to be sailed "fat and fast" rather than pinched toward the wind. Its rudder remains effective even when the boat is heeled, as the twin-keel placement helps manage the center of lateral resistance more predictably than a single short keel.

Interior Comfort & Variations

For a vessel measuring just under 8 meters, the Bi-Loup 77 offers an interior volume that rivals many 30-footers of its era. This "maximized volume" approach is a hallmark of the Wrighton shipyard, which utilized the wide hull form to create a surprisingly airy cabin. The standard layout features a forward V-berth, a central saloon with two bench berths, and a compact galley. The inclusion of a dedicated, enclosed head compartment—a rarity on boats of this size in the 1980s and 90s—solidified its reputation as a true cruiser rather than a mere daysailer.

The model shares its structural DNA with the Bi-Loup 765 and the later Bi-Loup 26. While the 765 served as the foundational model, the 77 often featured updated deck molds and more modern interior finishes. Some variations of the hull were also marketed as the "Bi-Loup 26" in later years, often with slight changes to the transom or interior woodwork. The use of light-colored woods and numerous portlights prevents the "cave-like" feeling common in other small French cruisers of the period.

Known Issues & Buyer’s Checklist

Prospective owners should pay close attention to the structural integrity of the twin-keel junctions. Because these boats are frequently "beached" (intentionally dried out on the sand), the keel stubs and the surrounding hull laminate are subjected to point-loading stresses not found on standard fin-keelers.

• Keel-to-Hull Joints: Inspect for stress crazing or "weeping" at the base of the keels. If the boat has been repeatedly dried out on rocky or uneven ground, the internal grid structure may require reinforcement.
• Deck Core Dampness: Like many production boats of this era, the Bi-Loup 77 uses a balsa or foam sandwich construction for the deck. Check for soft spots around the chainplates and stanchion bases, as water ingress can lead to core rot.
• Rudder Bushings: The single-rudder setup is vulnerable to wear if the boat is frequently grounded. Check for excessive play in the tiller or steering linkages.
• Rigging Age: Many of these boats still carry their original fractional rigs. An inspection of the standing rigging and the mast step is essential, especially if the boat has been used in high-salinity environments.

Community & Resources

Owners of the Bi-Loup 77 benefit from one of the most dedicated owner associations in France. The Association des Propriétaires de Bi-Loup (ASPRO BI-LOUP) serves as a vital repository of technical data, restoration logs, and historical brochures. This community is particularly active in organizing "rassemblements" (gatherings) where owners share tips on maintenance and modifications specific to the twin-keel design. For those seeking technical naval architecture context, Vincent Lebailly Yacht Design maintains a historical link to the Wrighton brand and its modern-day revival.

The Verdict

The Bi-Loup 77 is a specialized tool for a specific type of sailor: the coastal explorer who views the tide as an opportunity rather than an obstacle. It sacrifices raw upwind speed for the freedom to enter shallow harbors and the security of a stable, upright hull when the water disappears.

Pros:

• Extreme Versatility: Capability to dry out safely allows for unique anchoring opportunities and reduced haul-out costs.
• Living Space: Exceptional headroom and cabin volume for a sub-8-meter vessel.
• Safety: High initial stability makes it an excellent platform for coastal family cruising.

Cons:

• Upwind Limitations: Increased wetted surface and shallow draft result in mediocre pointing ability compared to fin-keeled rivals.
• Weight: Heavier than many contemporary transportable cruisers, requiring a substantial vehicle for towing.
• Maintenance Niche: Requires specific inspection of the hull/keel joints due to the stresses of regular grounding.