Dufour
Dufour 412 Grand Large
The Dufour 412 Grand Large is the refined successor to the award-winning 410, incorporating owner feedback to create a more polished and functional cruising platform. The most notable external change is the transition from a retractable bowsprit to a fixed fiberglass and stainless-steel dolphin sprit, which simplifies anchor handling and provides a better lead for downwind sails. This model is perfectly positioned for the social cruiser, featuring the signature Dufour "outdoor galley" at the transom, complete with a gas grill and sink, which has become a benchmark for the brand.
Surveyors should focus on the plumbing and gas connections for the transom galley, as these are exposed to the elements and can suffer from corrosion or leaks if not properly winterized. The fixed bowsprit should be inspected for stress cracks at its mounting points on the hull, and the anchor locker should be checked for proper drainage to prevent chain corrosion. Like its predecessor, the 412 uses a saildrive system; verify the age of the rubber diaphragm and the condition of the hull-to-saildrive seal.
Market context for the 412 is strong, as it sits in the sweet spot of the 12-meter production market. It offers a more contemporary interior feel than the earlier Grand Large models, with upgraded LED lighting and better ventilation. For the buyer, it represents a modern, "turn-key" option that avoids the teething issues sometimes found in the very first units of a new design cycle. It is a reliable, predictable sailer that settles nicely on its chine when powered up.
At a glance
Quick facts
- Production
- 2016+
- LOA
- 12.35 m
- Beam
- 4.2 m
- Model
- Dufour 412 Grand Large
Key takeaways
- Best for: social cruisers who prioritize outdoor living and ease of access
- Common issue: transom plumbing leaks and bowsprit mounting stress
- Typical price: solid resale value for well-maintained private units
Expert verdict
FairHelm rating: 7.7/10 — Social cruiser with signature outdoor galley; monitor transom plumbing and fixed bowsprit mounting points.
Vadim Nareyko, FairHelm Editorial · Last reviewed: 2026-07-12
Technical data
- Length overall (LOA)
- 12.35 m
- Beam
- 4.2 m
- Production years
- 2016+
Typical problems
Buyer FAQ
- What makes the Dufour 412 different from other 40-footers?
Its unique outdoor galley at the transom and the beam-forward design that creates an exceptionally spacious interior for its class.
- Does the Dufour 412 come with a self-tacking jib?
Yes, a self-tacking jib is standard, making it very easy to handle for couples or solo sailors, though a larger overlapping genoa is an option for light-air performance.
- What should I look for when buying a used Dufour 412?
Check the condition of the transom grill, the age of the saildrive diaphragm, and inspect the bonded windows for any signs of leaks.
- How is the engine access on the 412?
Engine access is excellent via the lifting companionway steps, with additional side access panels in the aft cabins.
- Is the Dufour 412 a good boat for chartering?
Yes, it is a very popular charter model due to its spacious layout and social cockpit, but private versions are often better maintained.
Design History
Dufour 412 Grand Large emerged when Scandinavian and North Sea yards were scaling reliable GRP cruising platforms for owner crews rather than charter fleets. French production shaped the hull lines and interior volume for predictable manners in Baltic chop and North Sea swell. Production ran from 2019 to present; registry and owner-club sources cite approximately ~440–980 completed hulls.
Dufour positioned the Dufour 412 Grand Large for coastal and offshore use in the 2019–ongoing production window — explaining mixed maintenance histories on the secondary market today.
Mid-production changes were mostly interior trim, engine options, and deck hardware rather than fundamental hull revisions. That means survey condition, winter storage history, and rigging invoices usually matter more than the model year printed on the brochure. When you evaluate a Dufour 412 Grand Large on Blocket, treat the maintenance story as part of the specification — not a footnote after the asking price.
Annual Ownership Costs
| Cost item | Low (SEK) | High (SEK) | Notes |
|---|---|---|---|
| Marina berth | 22,000 | 48,000 | 12.26 m class, Stockholm/Gothenburg |
| Insurance | 8 000 | 22 000 | Agreed value and cruising area |
| Haul-out + winter | 12 000 | 28 000 | Yard package varies by region |
| Antifouling + hull care | 6 000 | 16 000 | Materials and labour |
| Engine / drivetrain | 5 000 | 16 000 | Service intervals and saildrive |
| Rigging reserve | 7 000 | 20 000 | Standing rigging age |
| Deck / structural reserve | 6 000 | 22 000 | Bedding, moisture follow-up |
| Total annual | 62 000 | 172 000 | Excludes major refit years |
Annual ownership for Dufour 412 Grand Large is predictable when service records are complete. Berth, storage, and insurance dominate fixed costs in Sweden. The largest variables are rigging replacement timing and any survey-led deck or drivetrain work triggered after purchase. Keep a separate technical reserve so routine season costs stay stable — especially on Blocket boats marketed as "ready to sail" without invoices.
Pre-Purchase Survey Checklist
Pre-Purchase Inspection Checklist: Dufour 412 Grand Large
Hull, Keel and Underwater Body
- Moisture-map the underwater hull; document osmosis or barrier-coat history on Dufour 412 Grand Large GRP of this era.
- Inspect keel-to-hull joint, keel bolts (if external iron), and backing structure for movement or recurring fairing cracks.
- Check rudder bearings and steering linkage under load during sea trial.
Deck and Hardware
- Test bedding at stanchions, tracks, and winches; open nearby interior access if damp stains appear.
- Inspect hatches and portlights for seal compression and core moisture at corners.
- Verify chainplate areas internally for rust staining or soft laminate.
Rig and Sail Systems
- Confirm standing rigging age with invoices; treat unknown age as near-term replacement on club-used hulls.
- Inspect mast step, spreaders, and terminals for corrosion or fatigue marks.
- Operate furling and reefing systems under realistic load.
Machinery and Systems
- Review engine and saildrive service including cooling, exhaust elbow, and mounts.
- Audit batteries, charging, and owner-added electrical work for safe fusing.
- Check tanks, bilges, and hoses for age-related seepage.