Bi-Loup 66 Information, Review, Specs

Sailing Performance & Handling

The sailing characteristics of the Bi-Loup 66 are defined almost entirely by its twin-keel arrangement. Unlike a deep-finned monohull, the Bi-Loup 66 is not designed for high-performance windward work. Instead, it offers a stable, stiff platform that excels in reaching and running. In a heavy breeze, the boat’s moderate displacement and wide-set keels provide significant initial stability, making it a "stiff" boat that remains relatively flat when other small cruisers might be heeling aggressively.

Handling is generally described as predictable and forgiving for novice sailors. However, because the wetted surface area is higher than that of a single-keel boat, light-air performance can be sluggish. According to historical reviews in French nautical publications like Voiles et Voiliers, the boat tracks well due to the dual keels acting like twin rudders of sorts, providing good directional stability even in choppy coastal waters. The boat is typically powered by a small outboard engine mounted on a transom bracket, which provides sufficient maneuverability in marinas, though the lack of a deep central keel means the boat can be prone to windage when backing up in tight quarters.

Interior Comfort & Variations

Despite its modest 6.6-meter length, the interior of the Bi-Loup 66 is surprisingly voluminous, a feat achieved through a relatively high freeboard and a clever "asymmetric" approach to space that the Wrighton shipyard often utilized. The cabin usually features a classic V-berth in the bow, a central saloon with two bench berths, and a small galley area. Because the boat was designed for coastal "camping-cruising," the amenities are functional but basic.

The Bi-Loup 66 served as the foundation for the slightly evolved Bi-Loup 700, which utilized much of the same hull philosophy but offered refined interior moldings and a more modern deck layout. Some versions of the 66 were delivered with a modular "pop-top" style hatch to increase standing headroom while at anchor, a feature highly valued in a vessel of this size. Materials used are primarily robust GRP (Glass Reinforced Plastic) with simple wood trim, reflecting its utilitarian heritage.

Known Issues & Buyer’s Checklist

When inspecting a Bi-Loup 66 on the used market, buyers should focus on the specific stressors associated with twin-keel designs and vintage French construction.

• Keel Attachment Points: Because these boats are frequently dried out on their keels, the internal hull sections where the keels are bolted can experience significant stress. Inspect the bilge for "spiderweb" cracking or signs of structural reinforcement near the keel bolts.
• Osmosis: Like many polyester boats built in the 1980s, the Bi-Loup 66 is susceptible to osmotic blistering. A moisture meter test on the hull, particularly near the waterline and the keels, is recommended.
• Rudder Bearings: The rudder on the 66 is often transom-hung or partially protected. Check for play in the pintles and gudgeons, as years of beaching can cause wear or misalignment.
• Deck Core: The sandwich construction used in the deck can suffer from delamination if deck hardware (stanchions, cleats) has not been properly re-bedded, allowing water to ingress into the core.
• Window Seals: The large plexiglass windows are prone to leaking and "crazing" after decades of UV exposure. Replacing these seals is a common but necessary maintenance task for new owners.

Community & Resources

The Bi-Loup range enjoys a dedicated following, particularly in Europe. The Association des Propriétaires de Bi-Loup (APBL) is the primary technical resource for owners, providing a repository of original brochures, modification guides, and advice on restoring older 66 and 700 models. While the original Wrighton shipyard no longer exists in its 1980s form, the legacy of the brand continues through various owner-led initiatives and small-scale revivals of the "Bi-Loup" name in France.

The Verdict

The Bi-Loup 66 is an ideal choice for the budget-conscious sailor who operates in tidal regions or desires a "beachable" boat for family day-tripping and occasional overnights.

Pros:

• Tidal Independence: The ability to dry out upright is a massive advantage in regions with significant tide ranges.
• Stability: Very stiff and stable for a boat under 22 feet.
• Simplicity: Minimal systems make it easy to maintain and cheap to operate.
• Interior Volume: Feels larger inside than its length suggests.

Cons:

• Upwind Performance: Struggles to point as high as single-keel competitors.
• Light Air Speed: Increased wetted surface area makes it slow in soft breezes.
• Aging Hardware: Most units will require significant cosmetic and structural "refreshing" of seals and core.