The 405 Grand Large proved to be one of the many success stories from the Dufour yard. Marrying a performance orientated hull with a high quality interior, the 405 is arguably the perfect size for cruising couples and families. "Seaclusion" is the "Adventure" Version, and has been in the same single, private ownership from new. The yacht benefits from an high level of specification, to include Webasto air-conditioning/heating, retractable dinghy davits, bow-thruster and a comprehensive navigation set-up. Fully British registered and EU VAT paid. Immediate purchase available.PLEASE NOTE: THE YACHT IS BASED NEAR MARSEILLE, BUT WILL BE CRUISING BALEARICS JULY 2026, THEN SOUTH FRANCE AUGUST/SEPTEMBER 2026. THE SELLERS WILL MAKE THE YACHT AVAILABLE FOR VIEWINGS DURING THIS PERIOD. Construction
Built by Dufour Yachts
Aft cockpit cruiser
GRP Hull - coppercoat first applied 2015, renewed 2024
Bow thruster cavity epoxy re-enforced 2024
Professionally polished 2026
Stainless steel bow protector
Fin keel - standard antifoul (2026)
Blade Rudder - bearings replacement 2023
Folding transom/swim platform
Dimensions
Twin helm wheel steering
LOA 11.9M
LWL 10.63
Beam 3.98m
Draft: 2.03m
Light Displacement: 8,080 kg
Ballast 2,336kg
Air draft 16.95m
Mechanics
Volvo D2-55 engine
Hours: Approx 1700 hrs
Volvo sail drive to 3 blade folding prop
Last full official Volvo Penta service September 2024 (no use during 2025)
Major Engine works Diaphragm seal replacement 2022
Flywheel replacement 2023
Engine mounts replacement 2023
Cooling System & injectors overhaul 2023
Prop Shaft overhaul 2023
Exhaust replacement 2023
Exhaust elbow Repair 2023
MDU Unit replacement 2024
Installation of emergency engine start 2024
New Sea water pump 2026
Retractable Sidepower SR80/185T bowthruster
Tool Kit, cordless polisher/various spare parts including sidepower controller, pumps, jabsco service kits etc
Rig and Sails
Last full check (Waypoint Marine, lefkas, Greece) 2023
Sloop rigged
Continuous standard rigging in single strand stainless steel cable and chrome plated bronze turnbuckles including forestay, double backstay, cap shrouds, inter and lower shrouds
Aluminium Z-spars
In mast Mainsail - Elvstrom Sail (new 2018, last serviced in 2023)
Genoa Furler - Falcnor LS 180 with Elvstom Genoa (new in 2019, last serviced 2023)
Asymetrical Spinnaker on furler system (2012)
All control lines lead back to the cockpit for ease of handling
4 Lewmar winches. 2 x 44ST & 2 x 32ST
Adjustable genoa car leads
Electrics
Domestic Batteries: 3 x AGM 12V l30 A/h (2023)
Engine Battery: 1 x 72 A/h AGM (2026)
Bow Thruster Battery: 1 x 95 A/h AGM (2024
Adjustable Solar Panels: 2 x 100w, (2016)
Victron Inverter 220/12v
Victron Battery Monitor
Cristec Main Battery Charger 25 a/h
Isolation Transformer
Webasto Air-conditioning / heating in cabins and salon 220v
Shore power – 12v & 220v systems
Stereo with loudspeakers in saloon and cockpit
Installation of emergency engine start
Tankage & Plumbing
Fuel Tank Size: 200 Ltr in Plastic tank
Holding: 1 x 50 ltr holding tanks
Polyethylene water tanks have a total capacity of approximately 380 litres with inspection plates and electric gauges on tanks . (1 x 200lt in stern, 1 x 180lts in bow)
Pressurised water system, 20 litre water heater
Electric bilge pump with strainer and controls on switchboard
Manual bilge pump operated from the cockpit
Drainage of shower water by pumps direct to the sea, easily accessible under the washbasins.
Deck
Teak decking - side decks, coach roof and cockpit, plus teak handrails on coach roof & wooden toe rails
Quick electric windlass
25kg Delta Anchor with 80 m of 10 mm chain, 20m of warp & swivel connection
Spare Bruce 15 kg anchor with warp
Abundance of warps/ropes (6) and fenders (12+2).
Passerelle
Chrome frame supporting solar panels
Chrome Retractable and removable Davits for the dinghy
Flagpole for 1 1/4 yard flag
Sprayhood with removable shades for the windows (2023)
Bimini with removable side and stern shade panels (2023)
Cockpit Table with storage unit, power outlet & lamp
Deep Sunbrella cushions for cockpit seats (2023)
Sunbrella Wheel and Winch covers
Drop-down swim platform with hot and cold shower
Outboard engine bracket
Outboard engine hoist
2 large side lockers with lids fitted with padlock hasps
GRP steering pedestals
Rudder stock head for installing the emergency tiller
Engine lever and control panel easily to hand for the helmsman on the starboard side
Gas cylinder locker starboard aft with 2 gas bottles
Life raft stowage in dedicated locker
Cockpit shower in port aft locker
Telescopic stainless steel bathing ladder
Water filter system, 25m hose and numerous adapters
2 x Electric Cable (25 m) with various adapters
Navigation
Raymarine C90w Chart Plotters- (European chart installed) 2 in cockpit, & in saloon
Raymarine ST 60 autopilot display
Raymarine autopilot - ST70 linear dirve
Raymarine ST70 colour displays 2- port & starboard
Raymarine wind
Raymarine speed and sonar
AIS Comar CSB 200 (2012)
Radar
Compass on each steering wheel
VHF - Ray 49E with antenna
VHF Loud speaker and extra handset in cockpit
Handheld VHF & Garmin
Navigation lights
Numerous Pilots Guides covering the Mediterranean (Spain, France, Italy, Croatia, Albania, Greece, Turkey) - by separate negotiation
Extensive Charts - Imray from the UK through the Mediterranean, and the full set of Eagle Ray Charts for Greece - by separate negotiation
Tenders
Highfield 240 UL tender with aluminium hull (new in 2022) - by separate negotiation
Sunbrella cover - by separate negotiation
4hp Yahama outboard (new in 2024) - by separate negotiation
Huilke Paddleboard (new in 2024) - by separate negotiation
Safety
Epirb - last serviced and battery replaced 2023
6 person Seatec OFFSHORE PLUS Life Raft / ISO9650-1 Type 2, in canister, (new in 2026)
Grab bag with flares and emergency provisions
Jonbuoy (last serviced 2023)
Danbuoy (last serviced 2023)
Fire blankets (1)
Fire extinguishers (3)
6 x life jackets (last serviced 2023)
Jack stays
Manual & electric bilge pumps
Radar reflector
Emergency tiller
Interior
All joinery work is finished in Moabi mahogany, with fiddles, mouldings and framings in solid wood
Cabin doors have a blocking system in order to keep them open where necessary.
Floor in laminated Moabi wood.
The cabin linings are in stylish white marine plywood.

LED lighting throughout
Companionway

Sliding companionway hatch and washboard in Plexiglas with stops and lock
Curved wooden steps and access to engine by lifting stair case on jacks
Two handrails

Dedicated stowage for companionway door inside the boat
Saloon

Wine cellar embedded in Saloon floor (for 20 bottles)
Seating for 8 with washable Cream suedette cushions
Solid wood table with small centre cupboard
Roller blinds/mosquito nets for hatches and windows throughout
Chart table with hinged desktop and 12v electrical switch panel
Smoke alarmGalley

Corian worktop
1 1/2 stainless steel sinks with corian covers & mixer tap
2 burners cooker on gimbals, plus corian cover
Inset microwave
Large (180litrs) 12V fridge with top and front access
Nespresso machine
Full set of Dufour crockery, cutlery, saucepans and utensilsCabins

Master cabin (forward) with 195cm long double berth, made to measure mattress cover, duvet, pillows and 2 sets of white egyptian cotton bed linen

2 Double cabins in the stern, with made to measure mattress cover, duvet, pillows and 2 sets of white egyptian cotton bed linen
Heads

Master ensuite heads, including Jabsco electric marine toilet
Heads with marine toilet, and 50ltr black water tank
Bath and hand towels for 6 (2 sets)

This 2012 Dufour 405 Grand Large is listed for sale in Marseille, Provence-Alpes-Côte d'Azur. With a 39ft layout and used condition, this boat is suited to buyers looking for sail options in this location. View full details, photos and specifications for reference RB702084 on Rightboat.