Dufour 310 Grand Large Information, Review, Specs

Sailing Performance & Handling

The sailing characteristics of the Dufour 310 Grand Large are defined by its high-stability hull and the grip provided by its dual-rudder configuration. According to an editorial review by Yachting Monthly, the boat exhibits impressive control when pressed, as the leeward rudder remains vertical and fully immersed even at high angles of heel. This prevents the "rounding up" common in single-rudder boats with wide beams.

With a Sail Area/Displacement (SA/Disp) ratio in the vicinity of 20, the 310 GL is powered adequately for light-to-moderate air, especially when equipped with the optional Gennaker on the fixed bowsprit. The standard self-tacking jib makes tacking effortless, though sailors in regions with light winds often opt for the overlapping genoa or an aftermarket Code 0 to maintain speed. Handling under power is predictable, though the twin rudders mean there is no prop wash over the blades, requiring a bit of forward momentum before the helm becomes responsive in tight marina settings.

Interior Comfort & Variations

Despite its 31-foot 8-inch LOA, the interior of the 310 Grand Large feels considerably larger due to its 10-foot 10-inch beam and the use of light-colored woods, such as Oak or Moabi. The layout is a classic two-cabin configuration. A notable design choice is the forward cabin’s double doors, which, when left open, create a continuous sightline from the companionway to the bow, enhancing the sense of interior volume.

The galley is positioned to port and is surprisingly functional for a boat of this size, featuring a two-burner stove and a top-loading refrigerator. Variations of the model primarily concern the keel and the interior finish. While the deep-draft version (1.90m) is the standard for performance-oriented sailors, a shallow-draft version (1.60m) was produced for coastal cruising in areas like the Chesapeake Bay or the French Atlantic coast. Additionally, a swing-keel variant was introduced to allow for beaching and exploring shallow estuaries, a feature that significantly expands its cruising range compared to fixed-keel siblings. The 310 GL eventually paved the way for the Dufour 32, which utilizes the same hull DNA but introduces a more modern deck layout and an inflatable aft platform.

Popular Mentions & Media

The Dufour 310 Grand Large gained significant critical acclaim shortly after its release, most notably being named one of the "Best Boats" of 2015 by Sail Magazine. The award highlighted its ability to provide a "big-boat experience" in a package that is easy to own and sail. It has also been featured in numerous European yachting publications as a benchmark for the "new generation" of small production cruisers that prioritize cockpit ergonomics over traditional, narrower hull forms.

Known Issues & Buyer’s Checklist

Prospective buyers of a used Dufour 310 Grand Large should focus on technical areas unique to its high-spec design for this size category:

1. Steering Linkage: Because the boat utilizes twin wheels and twin rudders on a relatively small chassis, the steering cables and quadrants are tightly packed. Buyers should inspect the tension and wear on the steering cables to ensure there is no "slop" in the helm.
2. Self-Tacking Track: The car and track for the self-tacking jib are under significant load. Check for any bending in the track or wear in the Torlon balls of the car, which can lead to friction during tacks.
3. Engine Access: While the Volvo Penta engine is reliable, the compact engine box means that routine maintenance, such as impeller changes or belt adjustments, requires a bit of dexterity. Check for signs of deferred maintenance in the tighter corners of the engine compartment.
4. Hull Chine Gelcoat: The hard chines are a stylistic and functional highlight but are also prone to "dock rash" or impact chips. Inspect the gelcoat along the chine line for any professional or amateur repairs.
5. Sealant at the Keel Joint: On swing-keel models, the pivot mechanism and the hydraulic or manual lifting system should be cycled several times to check for smooth operation and any signs of corrosion or electrolysis around the housing.

Community & Resources

Owners of the 310 GL are supported by a well-established network of enthusiasts. The Dufour Owners Association provides a centralized hub for technical manuals and sail-tuning guides specifically for the Grand Large series. Additionally, the Felci Yacht Design archives offer insight into the hull's polar diagrams and performance potential for those looking to optimize the boat for club racing.

The Verdict

The Dufour 310 Grand Large is an expertly engineered compromise that leans heavily toward modern comfort and ease of use without sacrificing the "joy of helm" that Dufour is known for. It is an ideal vessel for a couple or a young family looking for a modern, stylish cruiser that feels twice its size in a slip.

Pros:

• Exceptional cockpit space for its class thanks to the twin-wheel layout.
• Superior stability and control in heavy air due to the twin rudders and hard chine.
• Bright, airy interior with a clever "open" forward cabin design.
• Highly manageable for solo or shorthanded sailing with the self-tacking jib.

Cons:

• Twin rudders result in a lack of prop wash, making low-speed docking maneuvers more tactical.
• Limited internal storage for long-range provisioning compared to older, heavier cruisers.
• Self-tacking jib can feel underpowered in light air without an additional reaching sail.