Bi-Loup 77 NV Information, Review, Specs

Sailing Performance & Handling

The Bi-Loup 77 NV is defined by its twin-keel configuration, which dictates its behavior on the water. With a draft of approximately 0.90 meters, the boat is exceptionally stable and exhibits a "stiff" sailing characteristic, resisting heeling more effectively than many light-displacement fin-keelers of the same length. This makes it an approachable vessel for novice sailors or families who prioritize a sense of security over raw speed.

In terms of sea-kindliness, the 77 NV tracks well due to the dual-keel arrangement acting as two foils, which helps compensate for the lack of a deep central fin when sailing upwind. However, users should expect a trade-off in light air performance; the increased wetted surface area of the two keels creates more drag than a single fin. According to technical archives from the Association des Propriétaires de Bi-Loup, the boat performs best in a steady breeze (Force 3-4), where its hull form can generate enough power to overcome that drag. Off the wind, it is a stable platform, though it lacks the surfing potential of modern planing hulls. Its primary advantage remains its ability to "beach" or sit upright on the sand during low tide, a maneuver that the hull and keels were specifically reinforced to handle.

Interior Comfort & Variations

For a vessel under 25 feet, the Bi-Loup 77 NV offers an unconventional amount of interior volume, a hallmark of Wrighton’s design philosophy. The "NV" update improved upon the original 77 by utilizing more modern headliners and an optimized galley layout. The interior typically features a forward V-berth, a central saloon with two bench seats that double as berths, and a surprisingly functional aft cabin—a rarity for a boat of this size.

The use of large, wraparound coachroof windows provides significant natural light, preventing the "cave-like" feeling often associated with small cruisers. The head compartment is generally situated to starboard, providing enough headroom for comfort without compromising the structural integrity of the deck. While the Bi-Loup 77 NV is the most common iteration, its sibling, the Bi-Loup 78, eventually succeeded it with a slightly modified stern and cockpit arrangement, though they share the same fundamental hull DNA.

Known Issues & Buyer’s Checklist

Prospective buyers of a Bi-Loup 77 NV should focus their inspection on the specific stresses associated with twin-keel designs and French construction methods of that era.

1. Keel-to-Hull Joints: Because the boat is designed to rest on its keels, the attachment points and internal floors (structural ribs) are subject to significant vertical pressure. Inspect the bilge for stress cracks or evidence of movement around the keel bolts.
2. Window Sealing: The expansive acrylic windows are a signature feature but are prone to crazing and leaks over time. Check for water staining on the interior woodwork beneath the ports.
3. Deck Core Integrity: Like many production boats of this age, the deck may use a balsa or foam core. Use a plastic hammer to "tap-test" for dull thuds that might indicate delamination or water ingress, particularly around the chainplates and stanchion bases.
4. Rudder Play: The transom-hung rudder is robust but the bushings and pintles can wear, leading to vibration or "slop" in the helm.

Community & Resources

The Wrighton brand enjoys a dedicated following, particularly in Western Europe. The most authoritative resource for technical drawings, maintenance tips, and historical data for the 77 NV is the Association des Propriétaires de Bi-Loup, which maintains a comprehensive library of owner-contributed knowledge. While the manufacturer underwent several changes, the current iteration of the company, Wrighton Yachts, continues to uphold the legacy of the "Bi-Loup" name, though their focus has shifted to larger models like the 36.

The Verdict

The Bi-Loup 77 NV is a quintessential "pocket cruiser" for the tidal sailor. It prioritizes safety, interior volume, and the freedom of shallow-draft exploration over racing performance.

Pros:

• Beachable: Twin keels allow for stress-free drying out in tidal zones.
• Interior Volume: Feels significantly larger than its 7.5-meter length suggests.
• Stability: A very stiff and forgiving boat for family cruising.

Cons:

• Light Air Performance: Higher drag makes it sluggish in winds under 8 knots.
• Upwind Angles: Cannot point as high as modern fin-keel performance cruisers.
• Aesthetics: The high coachroof, while functional, creates a bulky profile that may not appeal to traditionalists.