Design and Construction
The 425 GL was built to maximise internal volume across the Grand Large range. Her hand-built hull and deck were robustly constructed using waterproof resins for integrity and durability, and substantial Twaron-reinforced longitudinal hull stringers paired with a hefty, moulded floor framework leave her stiff and strong anchor. The deck itself is a vacuum-infused polyester resin moulding with a balsa core for insulation and extra stiffness. Surveyors have noted that the hull stiffening around the keel is better than on other reasonably priced yachts, and that Dufours are a joy to survey because everything is easily accessible. A deep fin keel carries a cast iron ballast bulb at the foot — the bulk of her 5,379 pounds of ballast sits in that large bulb on a hydrodynamically designed foil — which keeps her stiff in a blow, while an equally deep, semi-balanced spade rudder tracks well and does not lose its grip when heavily heeled.
Rig and Handling
Her rig is 15/16ths fractional with twin swept spreaders, a 135% furling genoa and a two-reef, semi-battened mainsail. All sheets, reefing lines and the kicker are led aft, with genoa winches immediately beside the twin helms; the mainsheet terminates on the coachroof and can be annoying single-handing in gusty conditions. Swept spreaders limit the boom angle, so gybing downwind is the safer option. Under sail, limited wetted surfaces and a lengthy waterline give an impressive turn of speed in light and heavy airs alike, and her fine bows with a plumb stem slice through chop rather than slamming. She is close-winded on a beat, holding momentum to just below 35 degrees off the apparent wind, and will nudge toward 8 knots on a close reach in 16–20 knots. A comfortable first reef comes around 20 knots apparent; she hangs on confidently to 24. Under the standard naturally aspirated 40 hp Volvo, she pushes the easily driven hull through a chop at a steady 6 knots and bites quickly astern.
Accommodations
Buyers could choose two or three cabins and two or three heads. The 3/3 version was primarily for charter and can feel cramped, while the 2/2 and 3/2 found more favour with cruisers. The forecabin is the largest, with a comfy island berth, ample stowage, a small seat and a compact heads with shower; aft berths are equally generous though head clearance is tighter. The saloon offers a large U-shaped settee with contoured cushions and a padded bench opposite, and the table drops to a double if the convertible option was taken. A linear galley with excellent worktop lighting and plenty of stowage anchors the port side, though the fridge is small. Headroom is 6 feet 6 inches, ventilation is good with many opening ports, and a large forward-facing nav station suits paper-chart sailors. In the three-cabin model both seat lockers are shallow; with two cabins one is full-depth and positively cavernous.
Cockpit and Deck Layout
Twin wheels open the cockpit, complemented by a wide drop-down helm seat for transom access. Straight seats accommodate lounging and dining at a stout centerline table that mounts the compass and instruments. Side decks are wide and uncluttered thanks to inboard genoa tracks and a narrow shroud base, and a below-deck windlass with deep chain locker simplifies anchoring, as do chunky twin bow rollers for a second anchor. A dedicated liferaft locker and an abundance of sturdy handholds — including a full-length grab above the galley — round out a practical short-handed layout.
Known Issues
Surveyors working on the 425 GL routinely note a couple of weak points. Toilet holding-tank hoses can degrade and perish, and some deck flexing appears; creaking decks are a Dufour trait and not normally structural. Bonded teak slats on deck, seats and sole should be checked for lifting. The nickel-plated brass seacocks Dufour fitted are cheap and nasty and worth replacing with plastic, DZR or bronze. Coolant and exhaust elbow can clog with limescale and salt. The sail drive is a compact fit — check service history. The saloon deck vent can catch the genoa sheet if left open, and the working deck could use more clip-on points.
The Verdict
The Dufour 425 Grand Large is a thoughtfully laid-out volume cruiser with genuine turn of speed and a stiff, well-built hull. She rewards the cruiser with bright, roomy accommodations and a forgiving helm, while a few deferred-maintenance items — seacocks, hoses, teak bonds — are the price of admission on the used market.
Pros
- Stiff, strong hull with superior keel stiffening and Twaron stringers
- Fast and balanced under sail; close-winded and steady to 24 knots apparent
- Spacious, bright interior with convertible saloon and cavernous two-cabin locker
- Practical short-handed deck with led-aft lines and twin helm access
Cons
- Nickel-plated brass seacocks and perishable holding-tank hoses need early attention
- Swept spreaders limit downwind boom travel; mainsheet awkward single-handing
- Charter-biased 3/3 layout feels cramped; small fridge in an otherwise able galley
- Bonded teak and creaking decks demand inspection for delamination risk
