Dufour 525 Grand Large Sailboats for Sale

The hull is hand-laid fiberglass with a balsa-cored deck, foam stringers bonded inside the hull for stiffness, and a rigid inner liner that also carries the bulkheads and cabinetry. The deck-to-hull joint is sealed with Sikaflex and screwed down under a solid teak toerail. Construction is described as an extremely sturdy monocoque structure, and the hull is tank-tested before commissioning. The deck-stepped double-spreader rig uses continuous cap shrouds terminating at a common chainplate, and the standard deep-fin keel carries a cast-iron bulb, though a deeper lead-bulb option was also available.

Layouts on the Used Market

Owner three-cabin layouts predominate among used examples — the forward master stateroom on centreline, two aft cabins, and typically two or three heads. The four-cabin version with a crew cabin forward turns up with some regularity and suits those who charter or sail with professional crew; it foregoes the foredeck sail locker in exchange for the extra cabin. All versions share the same two spacious aft double cabins and the same saloon footprint, so the variation is primarily in how the forward third of the boat is divided. Buyers planning extended liveaboard use tend to seek out the three-cabin owner's version for the larger master suite, the separate shower, and the greater stowage. Galley layouts varied between L-shaped and linear; the L-shaped arrangement is the more practical of the two for passage-making and is worth specifying if you have a preference. Three- and four-head configurations exist, but not all versions include a separate shower stall in each head, so it pays to examine this carefully on any given boat.

Equipment and Common Upgrades

The 525 was a well-equipped yacht from the factory — all Harken deck hardware, a full-batten main with lazyjacks, a 140 percent genoa on a double-groove furler, twin helm stations, and an electric anchor windlass were essentially standard. On the used market, the vast majority of examples carry additional equipment layered in over the years of ownership.

Electric winches are commonly fitted, often upgraded by owners who found the standard manual Harkens adequate for coastal sailing but tiring on ocean passages. Teak decks appear frequently, as do biminis and dodgers — the cockpit on the 525 is genuinely large and benefits from shade on a Mediterranean summer. Radar, AIS, autopilot, and a chartplotter are found on nearly all used examples; any boat without a functioning autopilot should be treated as a project, since the 525 is not a yacht you want to hand-steer for long passages. Bow thrusters are a frequent owner addition given the boat's length and the tight berths common in European marinas.

Watermakers, inverters, solar panels, and dinghy davits are widely found, reflecting the offshore liveaboard use many 525s were put to. A life raft in the lazaret is almost universal. Air conditioning appears on a meaningful share of boats, particularly those with Mediterranean or Caribbean histories; it draws significant power, so check the battery bank and charging infrastructure carefully when it's present. Spinnaker and asymmetric spinnaker gear — poles, lines, running rigging — are often seen, and a gennaker or cruising chute system is a common upgrade on boats used for downwind passages. Freezers, washing machines, and heating systems turn up on the more heavily equipped examples. Lithium battery conversions are a growing presence on more recently refitted boats, worth verifying for compatibility with the existing charging infrastructure.

What to Inspect

The balsa-cored deck demands careful attention. The deck-to-hull joint is screwed and adhesive-bonded, and while the construction is sound when dry, core moisture ingress through fastening points is the standard concern on any balsa-cored production boat of this age. Tap the deck thoroughly, paying particular attention to high-traffic areas and around deck hardware; soft spots indicate delamination and saturation that can be expensive to address.

The furling drum on the headsail is worth a live test. Something broke in the headsail's furling drum during the original sea trial review, and while that was a single early example, the Facnor double-groove system and its associated hardware should be inspected carefully for wear, corrosion, and smooth operation across its full range.

The common chainplate arrangement — all shrouds terminate at the same deck chainplate — means that a single corroded or fatigued fitting is bearing a significant load. Have a rigger open and inspect the chainplates; on a boat of this age the plate-to-deck interface is a known concern on many French production yachts of this generation.

The saildrive version (standard engine) deserves scrutiny. The Volvo Penta saildrive bellows is a consumable that must be replaced on schedule per manufacturer recommendations — neglected bellows are a serious flooding risk. Confirm the bellows has been replaced recently and that the replacement date is documented. The optional shaft-drive version avoids this particular issue but has its own alignment and cutless bearing considerations.

The lowering transom uses an electric motor. Confirm it operates smoothly and that the sealing system is watertight, as this is a complex mechanism that sees hard use on charter boats in particular. The lazaret behind it is large and often packed with heavy equipment; check that the structural supports are sound.

Interior joinery on older examples can show wear in the galley and nav station areas. The Corian countertops are durable, but the teak fiddles and cabinetry fastening points are worth inspecting. The inner liner system that carries the furniture is robust, but if water has entered the bilge, check liner bonding points for any sign of delamination or movement.

If the boat carries air conditioning, inspect the through-hulls and seacocks associated with that system carefully; age and infrequent use can leave seacocks seized.

Availability and Buyer's Takeaway

The Dufour 525 Grand Large circulates broadly across the brokerage markets of western Europe and the eastern United States, with strong concentrations in France, Spain, Italy, and Turkey — reflecting where many of these boats were originally delivered and subsequently cruised. The boat's production run is ongoing from 2006, which means later-build examples with younger systems are available alongside well-seasoned cruisers that have crossed oceans.

For a serious buyer, the 525 represents a capable offshore platform in a size range that is comfortable for a couple or a small family to manage. The broad factory option list and years of individual owner outfitting mean that due diligence on the specific equipment aboard is as important as the structural survey.

Pre-purchase checklist:

• Full out-of-water survey with emphasis on deck core moisture mapping
• Chainplate inspection by a qualified rigger — open and examine all attachment points
• Saildrive bellows: confirm replacement date and condition of the bellows and surrounding seal
• Furling systems tested through full range, including headsail drum
• Lowering transom mechanism operated and sealing inspected
• All seacocks exercised; confirm freedom of movement
• Battery bank and charging system (solar, alternator, shore power) load-tested
• Watermaker serviced and membranes dated
• Autopilot — ram, feedback unit, and drive — tested underway
• Running rigging and standing rigging age documented; halyards and sheets inspected for wear
• Air conditioning through-hulls and raw-water strainers if fitted