Dufour 512 Grand Large Information, Review, Specs

Sailing Performance & Handling

The 512 Grand Large utilizes a modern, high-volume hull characterized by a subtle hard chine that runs well forward, providing significant initial stability and increasing interior volume. On the water, the boat feels remarkably balanced for its size, a trait often attributed to Felci’s expertise in hull geometry. With a displacement-to-length ratio that leans toward the "light-moderate" category for a dedicated cruiser, the 512 remains responsive in light air, particularly when equipped with the optional 105% overlapping genoa rather than the standard self-tacking jib.

Handling is facilitated by a twin-helm configuration that offers excellent sightlines, though the reach to the primary winches can be a stretch for solo sailors. According to testing by Cruising World, the inclusion of a fixed bowsprit significantly simplifies the deployment of a Code 0 or asymmetric spinnaker, allowing the boat to maintain speeds of 8 to 9 knots in a 12-knot breeze. The deep T-shaped keel provides a low center of gravity, which, combined with the wide beam carried well aft, allows the 512 to track reliably even when pressed in a gust.

Interior Comfort & Variations

The interior of the 512 Grand Large is defined by a "galley-forward" layout, a design choice that remains one of the most distinctive features in the 50-foot production market. By placing the galley against the forward bulkhead, Dufour created a massive, full-beam salon that feels more akin to a luxury apartment than a traditional yacht. This configuration allows for a large dining table to port and a generous lounge/sofa to starboard, creating an expansive social hub.

The model was offered in multiple configurations to suit both private owners and the charter market. These range from a three-cabin, three-head layout (ideal for private use with a massive master suite forward) to a five-cabin version often found in Mediterranean charter fleets. A key sibling in this lineage is the Dufour 520 Grand Large, which later replaced the 512 and introduced further refinements to the cockpit's aft seating and the "plancha" outdoor grill area. The materials used in the 512, typically Moabi or Oak veneers, are accented by LED lighting and large hull ports that flood the cabins with natural light. Yachting Monthly highlighted the versatility of the nav station, which features a sliding desk that can be positioned for forward or aft-facing use, or tucked away to extend the salon seating.

Known Issues & Buyer’s Checklist

Prospective buyers of a pre-owned Dufour 512 Grand Large should focus their inspection on the following technical areas:

• Outdoor Plancha (Grill): The integrated gas grill in the cockpit is a hallmark of the 512. However, because it is located near the transom, the gas lines and hinges are prone to corrosion from salt spray. Ensure the drainage system for the grill area is clear to prevent stagnant water from sitting near the fiberglass.
• Retractable Bow Thruster: Most 512s are equipped with a retractable thruster to assist with docking. These units require regular maintenance; check for any delay in deployment or mechanical binding, which can occur if the unit hasn't been cycled regularly or if marine growth has accumulated in the housing.
• Deck Hardware Bedding: Owners on various technical forums have occasionally noted minor leaks around the stanchion bases or the mid-ship cleats. Given the balsa-cored deck construction, any evidence of moisture ingress near these fittings should be investigated with a moisture meter.
• Rigging Tension: Due to the wide spreaders and the lack of a permanent backstay on some configurations (depending on the chosen mast height), the rig tension is critical for performance. Inspect the chainplates and the mast step for any signs of movement or stress cracking.

Community & Resources

Owners of the 512 Grand Large benefit from a robust network of Dufour enthusiasts. The Dufour Owners Association is the primary hub for technical documentation and regional rallies. Additionally, because the 512 shares many mechanical systems with its siblings, the 500 and 520, technical wikis and owner groups dedicated to the Grand Large series provide an exhaustive database of DIY repairs and sail-trimming tips.

The Verdict

The Dufour 512 Grand Large is a masterclass in maximizing liveability for long-term cruising. It successfully balances the voluminous requirements of a modern cruiser with a hull that remains rewarding to sail. While its sheer size and "lifestyle" features might feel excessive for purist racers, it is an ideal platform for families or couples who prioritize comfort and social space without wanting to resort to a catamaran.

Pros

• Social Layout: The forward galley and massive salon create an unmatched interior social space.
• Outdoor Living: The "plancha" grill and large drop-down swim platform are best-in-class for entertaining.
• Performance: The Felci hull design ensures the boat remains fast and stable in a variety of sea states.

Cons

• Complexity: Features like the retractable thruster and extensive cockpit electronics require diligent maintenance.
• Berthing: The nearly 16-foot beam can make finding affordable slips a challenge in crowded marinas.
• Engine Access: While generally good, the galley-forward layout moves the engine further aft, which can make some peripheral components slightly harder to reach compared to mid-engine designs.