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

LWL 10.63

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 alarm

Galley

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 utensils

Cabins

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)