Dufour 350 Grand Large Information, Review, Specs

Sailing Performance & Handling

The 350 Grand Large is defined by its contemporary hull geometry, featuring a pronounced hard chine that runs well forward and a broad transom. This design, as noted in a comprehensive review by Sail Magazine, provides significant form stability, allowing the boat to remain relatively flat even when the wind freshens. One of the most distinctive technical choices for a boat of this size is the implementation of twin rudders. This configuration ensures that even when the boat is heeled and the leeward chine is engaged, the rudder remains deeply immersed, providing exceptional grip and preventing the "rounding up" common in single-rudder boats with wide beams.

The sail plan is designed for versatility, typically featuring a 9/10 fractional rig with no backstay, which simplifies the cockpit layout and allows for a larger mainsail with a modern "fat-head" or high-roach profile. According to sea trials conducted by Yachting Monthly, the boat feels remarkably light on the helm and responsive, almost akin to a large dinghy. The absence of a backstay, replaced by swept-back spreaders, means the mast is under significant tension, but it clears the cockpit of obstructions. Performance-wise, the boat balances its moderate displacement with enough sail area to remain lively in light air, while the chined hull provides a "second gear" of stability when the breeze exceeds 15 knots.

Interior Comfort & Variations

Dufour maximized the 3.54-meter beam to create an interior volume that rivals many 36-footers. The 350 GL was offered in both two-cabin and three-cabin configurations. In the two-cabin version, the boat features a massive storage locker accessible through the cockpit and a larger head with a separate shower stall, making it the preferred choice for couples cruising long-term. The three-cabin version replaces the storage locker and shower space with a second symmetrical aft cabin, catering to charter fleets or larger families.

The aesthetic follows the modern Dufour "Oak" or "Moabi" wood finishes, emphasizing light and airflow. A signature feature found in the 350 GL is the use of a "disappearing" companionway hatch and a forward-facing chart table that can be integrated into the salon settee to save space. Headroom is generous, particularly in the salon, where the coachroof remains high. The galley is typically L-shaped to port, featuring a front-opening refrigerator and deep sinks. One subtle but effective design choice is the inclusion of long hull ports that provide a line of sight to the horizon while seated in the salon, a feature often reserved for larger luxury yachts.

Known Issues & Buyer’s Checklist

Prospective buyers should focus on a few specific areas identified through owner feedback and surveyor trends within the Dufour Grand Large range:

1. Twin Rudder Linkage: Because the 350 GL uses twin rudders, the connecting rod and steering cables must be synchronized perfectly. Any "slop" or play in the twin wheels often indicates worn bushings or cable stretch that requires adjustment.
2. Saildrive Maintenance: Most units are powered by a Volvo Penta engine with a saildrive. The rubber diaphragm seal has a recommended replacement interval of 7 years; on a vessel of this vintage, buyers should verify if this critical maintenance has been performed.
3. Rig Tension: Due to the lack of a backstay, the rig relies heavily on the tension of the shrouds and the spreader angle. If the mast shows excessive pumping or the shrouds feel slack on the leeward side during a tack, a professional rig tune is necessary to ensure the mast remains stable under load.
4. Hull-to-Deck Joint & Hardware: Check for any signs of crazing or stress marks around the stanchion bases. While Dufour uses a robust inward-turning flange for the hull-to-deck joint, the high-tension rig can sometimes transmit loads to the deck hardware if not bedded correctly.

Community & Resources

Owners of the 350 Grand Large often find technical support through the Dufour Owners Association, a global network that provides access to historical manuals and technical drawings. While there is no dedicated website for the 350 model alone, the shared hull design with the later 360 GL means that parts and technical advice are readily available through Dufour’s dealer network and European parts suppliers.

The Verdict

The Dufour 350 Grand Large is a thoughtfully engineered cruiser that punches above its weight class in terms of handling and volume. It is particularly well-suited for sailors who prioritize a modern, responsive feel at the helm without sacrificing the comforts required for weekend or week-long coastal excursions.

Pros:

• Superior Handling: Twin rudders and a chined hull offer excellent control and stability.
• Volume: Interior space is optimized, particularly in the two-cabin layout.
• Simplicity: The backstay-less rig and self-tacking jib options make it an ideal short-handed cruiser.

Cons:

• Engine Access: While good from the front, access to the sides of the engine can be tight in the three-cabin version.
• Rigging Sensitivity: The B&R style rig requires precise tuning to maintain mast shape without a backstay.
• Cockpit Depth: The open transom design, while great for swimming, can feel somewhat exposed in heavy following seas.