Dufour Yacht

Dufour 525 Grand'large - Technical Specifications

Hull

The sandwich design of the hull makes for very good thermal and acoustic insulation. The lamination of the network of ribs reinforces the hull's solidity and in this way makes allows very good spreading of the forces from the keel and rigging. The inner molding liner with its perfect surface finish produces additional stowage space under the floors and makes for easier cleaning. Prevention of osmosis on hull with the use of a NPG gelcoat.

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Deck

The deck is produced by infusion for an optimum rigidity/ lightness ratio along with excellent thermal and acoustic insulation, and has an inner moulding liner for a perfect finish.

All working and traffic areas have a 'diamond-point' nonslip surface.

Localized monolithic reinforcing areas are included under deck fittings (winches, tracks, chain-plates, cleats).

To increase the boat's durability, Dufour's team of engineers have opted to minimize wooden structural inserts beneath deck fittings..

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Hull/Deck Junction

A straight sheer strake forms the join between the hull and the deck. This assembly ensures the watertightness of the hull/deck join and increases safety when moving about on deck.

The wooden toe-board emphasizes the deck line, and offers non-aggressive protection for the feet. The join between the transom/hull is built flat for greater aestheticism.

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Keel

For maximum life, keels undergo factory treatment before fitting (anti-corrosion and improved finish thanks to epoxy-based paint and coatings). The keel with a large sole-plate is fixed to the boat with a system of stainless backing-plate and bolts.

The (bulb) keel is in cast iron: 2.00 m. As an option, a long, mixed cast-iron/lead ballast keel with a draught of 2.35 m allows superior (stiff, close-winded) performance, whilst maintaining an acceptable draught, lowering the centre of gravity, and increasing the boat's stability.

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Helm System

  • 2 leather-sleeved stainless steering wheels, 1100 mm in diameter.
  • The steering wheels are easily controllable from a seated position on the helmsman's side bench seats.
  • Transmission system via chain and cranks connected to the rudder quadrant.
  • The rudder blade is semi-elliptical in shape - taking advantage of the latest research in hydrodynamics - and filled with very high density closed-cell epoxy foam to avoid any ingress of water.
  • The solid stainless rudder stock is mounted on selfaligning bearings for greater precision and lightness of the helm whatever the wind conditions.
  • Stainless steel emergency tiller
  • Access deck-plate for emergency tiller.

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Mooring & Anchoring

The mooring and anchoring system comprises:

  • Self-draining anchor locker forward, with hatch cover.
  • Anchor eyebolt.
  • Vertical 1.5 kW electric windlass with control box in the sail locker for remote electrical control.
  • Gypsy.
  • 2 bow rollers with stainless stemhead fitting (sailing possible with anchor catted).
  • 6 stainless steel mooring cleats for making fast warps and springs.
  • 6 stainless steel rubbing plates on sheer line.
  • Fender stowage provided in stern locker or sail locker.
  • Delta anchor 25kg
  • 30m anchor chain 12, 60m cable Ø 22
  • 2 x 15m mooring lines Ø 18, 1 x 42m mooring line Ø 18
  • 6 fenders (big size)

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Safety

  • Open stainless bow pulpit easing access aboard and spinnaker handling.
  • 2 stainless stern pushpits.
  • Bracket for lifebelt, flag, and outboard bracket. The boat is ringed by 2 rows of guard rails supported on stanchions fixed to bases bolted to the deck.
  • 2 large gates in the guard rails.
  • 2 teak handrails on the coach-roof make getting around easier.
  • Handrail astern of cockpit table.
  • 2 handrails above companionway.
  • Chain-plates for safety harnesses.
  • All running lines pass beneath the deck, leaving the coach-roof clear.

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Cockpit

  • Self-draining cockpit, with floor in non-slip polyester.
  • Large size cockpit benches with teak trim. Very convenient, safe cockpit coamings with winch areas in teak.
  • Large fixed cockpit table fitted with a teak tray and stainless fiddles with hinged leaves: easy movement and lots of seating around the table.
  • A cubby-hole behind each helm console.
  • For keeping ropes tidy, the cockpit has a rope tub at the entrance to the companionway, as well as 2 rope stowages port and starboard for the genoa sheets.
  • Sliding Plexiglass® companionway hatch.
  • Companionway sprayhood (3 brackets) in Dufour Yachts' colors built in to the coach-roof and fitted with leathercovered stainless handrails.
  • Navigation instrument location above companionway.
  • Gas cylinder locker. Cockpit lighting via dedicated spotlight built in under boom.

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Sun Platform & Transom

  • Large sun platform aft with teak trim.
  • Removable bathing ladder with teak steps.
  • Removable ladder with teak steps for side gates.
  • Cockpit shower with hot and cold water.
  • Transom with locker: a hinged door mounted on a hydraulic ram opens to reveal a large stowage space (the size of a tender) above the BIB locker, becoming a pleasant sun platform when closed.

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Mast & Boom

  • 9/10 fractional rig anodized aluminum mast stepped on the deck, carrying 2 levels of 20° swept-back spreaders.
  • Mast equipped with slider system.
  • Mast steps.
  • Anodized aluminum boom.
  • Deck flood light.

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Bowsprit

  • Retractable bowsprit allows attachment of spinnaker tack. Tack position adjustable from cockpit.

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Sails

  • Genoa cut with a horizontal cut suitable for the roller furler with added anti-UV protection, 140% overlap.
  • Standard mainsail with track (sliding rollers) and 2 rows of reef points.
  • Mainsail bearing 'Drakkar' logo
  • Lazy jack.
  • Lazy bag in Dufour Yachts' colours.
  • Mainsail sheet track with tackle return to cockpit.

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Genoa System

FACNOR LS290 twin-slot genoa roller furler and furling line. 2 pulleys for genoa furler line, 6 fairleads and jammer on port side-deck (returned to cockpit). 2 genoa sheet tracks with HARKEN piston-adjustable traveler blocks.

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Standard Rigging

  • Continuous-type stainless rigging.
  • Backstay bridle with twin turnbuckles.
  • Single forestay

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Running Rigging

Mainsheet returned to cockpit. Mainsail halyard returned to cockpit. Boom topping lift with mast cleat. 2 automatic reefing lines returned to cockpit. Mainsail outhaul returned to cockpit. Rigid boom vang with 4:1 tackle returned to cockpit. 2 genoa sheets. Genoa halyard returned to halyard winch. Handling the running rigging. Mainsail track on coach-roof. 10 Spinlock XTS jammers. 2 Spinlock XAS jammers. 2 x 5 sheave deck organisers.

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Winches

Aluminum self-tailing type winches (HARKEN):

  • 2 H 60 STA genoa sheet winches.
  • 2 H 48 STA handling winches on coach-roof.
  • 2 aluminum winch handles with 2 boxes.

Locating the winches aft makes for easy operation by helmsman.

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Ports, Hatches and Covers

5 opening ports in coach-roof. 6 fixed ports in coach-roof. 6 hull ports. 4 opening cockpit ports. 5 Lewmar T60 opening deck hatches with built-in blinds and mosquito screens. 2 Lewmar T44 opening deck hatches with built-in blinds and mosquito screens. Sliding Plexiglass® companionway hatch. Sliding companionway door in floor of cockpit. T70 deck hatch access to sail locker.

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Engine

  • Engine installation: Volvo 75 hp engine with Sail-drive transmission.
  • 110 hp Volvo engine with prop shaft transmission and folding propeller also available as an option.
  • Carefully-designed foam soundproofing.
  • Engine compartment ventilation via 100 mm ducts leading to transom (invisible ventilation openings).
  • Engine sump.
  • Engine control lever and engine control panel built into aft sun platform, aft of the port helm position.
  • Rev counter and hour meter.
  • Fixed three-bladed prop.
  • 2 x 250 liter rotomoulded fuel tank beneath aft bunks, with electric fuel gauge remoted to chart table.
  • Fuel filter with water separator, plus sea-water filter, anti-siphon valve.
  • Engine compartment light.

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Electricity

Supply:

  • Engine starter battery (12 V / 135 Ah)
  • 3 service batteries (12 V / 3 x 135 Ah)
  • The set of batteries is fitted with a relay. Service batteries stowed beneath floor at foot of companionway.
  • 300 W inverter incorporating a socket for a laptop computer.
  • High-output 120 Ah alternator.

Electrical equipment:

Electrical distribution panel with 21 functions on 12 V and 6 functions on 220 V, including:

  • Voltmeter for service battery and engine (220 V and 12 V).
  • Ammeter for consumption.
  • Electrical water level gauges.
  • Electrical fuel gauges.

The 12 V electrical circuit is protected by circuit-breakers. The 220 V circuit has dual protection, via one thermal-magnetic circuit-breaker per function, and an overall 30 mA differential circuit-breaker on the distribution panel.

  • 60 Ah battery charger.
  • Shore supply socket forward of sun platform.
  • Deck flood light.
  • LED cockpit lighting on end of boom.
  • 220 V power sockets in all parts of the yacht - 2 in forward cabin(s), at chart table, one per aft cabin, in galley.
  • Chrome-finish halogen ceiling lights.
  • Chrome-finish reading lamps.
  • Pre-equipment for optional cable installation.

Navigation lights:

  • LED navigation lights port and starboard on bow pulpit.
  • LED stern light on stern pushpit.
  • Steaming and LED anchor lights on mast.

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Water System

  • Hot-water system with 60 liter water-heater located in saloon to starboard. The 750-litre water capacity is stored in:
  • 280 l rigid rotomoulded water tank beneath bunk in forward cabin.
  • 2 x 210 l rigid rotomoulded water tanks in saloon to port and starboard.

The tanks are fitted with electrical level gauges.

  • Fresh-water system with electric pump.
  • Foot pump for fresh and sea water.
  • 2 bilge pumps: one manual and one electric.
  • Cockpit shower with hot and cold water.

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Layout

8 layout versions: 3, 4 or 5 cabins; 2, 3 or 4 heads; L-shaped or linear galley.

Floors are made of Moabi. (Wengé is available - see pricelist). Interior woodwork is in first-grade moabi and Wenge. Beadings, trims and cubby-hole door surrounds are in solid wood. Ventilation louvers are fitted at the top of cupboard doors. Interior lighting via numerous ceiling lights and reading lamps. All cushions have easily-removed covers.

Companionway

  • Headroom below hatch: 2.05 m. Wooden companionway. Engine access beneath companionway (retaining strut for safe opening, compartment light). Stainless hand rail.
  • Companionway closed off by means of sliding Plexiglass ® hatch. Service batteries stowed beneath floor at foot of companionway.

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Chart Table to Starboard

  • Headroom: 1.95 m. Forward-facing chart table.
  • Space provided for laptop computer.
  • Unit with shelf beneath chart table.
  • High-level unit running along side.
  • Bookshelf.
  • Panel for navigation instruments.
  • Chart reader.
  • Electrical distribution panel (12V / 220V)
  • All functions indicated by engraved labels in both French and English.
  • 12 V power socket.
  • 220 V power socket.
  • Water and diesel gauges.
  • Seat with cushions for seat and back.
  • Fixed port in coach-roof side.

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AFT Heads Port/Starboard

  • 1.88 m headroom. Polyester bulkheads to protect woodwork from water. Sea-toilet with lid. Shower tray.
  • Synthetic resin wash-basin, high-level unit, mirror, toilet accessories, single-lever mixer tap and shower-head.
  • Electric shower waste pump discharging into sea
  • 45 l rotomoulded toilet waste tank (deck / sea discharge) in starboard aft cabin. Light fitting.
  • Opening port in coach-roof side.

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AFT Cabins

  • 1.88 m headroom. Double bunk 2.02 m x 1.52 m / 1.03 m. Stowage beneath bunk. Hanging locker with light and shelves. High-level unit running along the hull.
  • Central cubby-hole between the two cabins.
  • Hull / ceiling liner in wood and simulated leather.
  • 4 light fittings. 2 ports opening onto cockpit and 1 hull port. 220 V power socket.

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Sail Locker

T70 deck hatch. Stainless ladder. Rail for hanging ropes. Ceiling light. Lewmar ventilator. Water drainage via floor. 1.87 m headroom.

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Single Foward Cabin Version

(versions 1, 3, 5, 7)

  • 1.92 m headroom
  • Door and access to en-suite head.
  • Closed units running along side to port and starboard.
  • Hanging locker with light and shelves to port, unit to starboard.
  • 6 light fittings.
  • Hull liner.
  • 3 opening deck hatches with ventilators, black-out blinds and mosquito screens.
  • 2 hull ports.
  • Central bunk.
  • Seat in front of port hanging locker.
  • Accessible stowage under bunk with 2 drawers on bunk face.
  • 2 off 220 V sockets.

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Forward Head

  • Headroom: 1.92 m.
  • Polyester bulkheads to protect woodwork from water.
  • Sea-toilet with lid.
  • Bulkhead-separated shower with Plexiglass® door.
  • Synthetic resin wash-basin, high-level unit, mirror, toilet accessories.
  • Electric shower waste pump discharging into sea.
  • T44 deck hatch.

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Twin Forward Cabin Version

(versions 2, 4, 6, 8)

  • 1.92 m headroom
  • Door and access to en-suite heads.
  • Closed units running along side.
  • Hanging locker with light and shelves in port cabin; unit in starboard cabin.
  • 4 light fittings.
  • Hull liner.
  • Opening deck hatch in each cabin with ventilator, blackout blind and mosquito screens.
  • 2 hull ports.
  • Bunk.
  • Seat with cushion against side at foot of each bunk.
  • Accessible stowage under bunks.
  • 220 V socket in each cabin.

Forward Head

  • Headroom: 1.92 m.
  • Polyester bulkheads to protect woodwork from water.
  • Sea-toilet with lid.
  • Shower tray.
  • Synthetic resin wash-basin, high-level unit, mirror, toilet accessories.
  • Electric shower waste pump discharging into sea.
  • T44 deck hatch.

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L Shaped Galley Version

(versions 1, 2, 5, 6)

Saloon

  • Headroom: 1.96 m.
  • Saloon with U-shaped banquette seat to starboard and long banquette seat to port. A central settee allows 2 extra guests to sit at the table.
  • 2 low units acting as arms for the port banquette offer extra stowage.
  • Fitted unit against forward bulkhead.
  • Stowage in port banquette, accessible by lowering the back.
  • Fixed saloon table: 1.2 m x 0.9 m with bar built in to center of table.
  • Aluminum table legs.
  • Cubby-holes and closed stowage units running along the side of the hull, behind the banquette backs.
  • Hull liner in wood.
  • 6 ceiling lights and 4 bulkhead lights.
  • T60 opening deck hatch with built-in black-out blind and mosquito screen. 1 ventilator. 2 hull ports.

L Shaped Galley

  • Headroom: 1.96 m
  • Corian® worktop with wooden fiddle round it.
  • Double sink with synthetic resin cover doubling as a chopping-board.
  • Waste bin below sink.
  • Under-sink storage and cutlery drawer.
  • Sliding storage bins. Stowage cubby holes along side of hull.
  • Gimbal-mounted stainless 'Bretagne Evolution' 3-burner gas cooker with grill/oven, with stainless fiddle and anchor-point for safety strap.
  • Bottle stowage.
  • System for securing crockery in dedicated unit fitted with pegs.
  • 2 opening ports in coach-roof side.
  • 6 ceiling lights and one spotlight.
  • 100 l top-opening 12 V-operated cool-box.
  • 75 l freezer available as an option.
  • 130 l front-opening 12 V refrigerator.

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Linear Galley Version

Saloon

  • Headroom: 1.96 m.
  • Saloon with U-shaped banquette seat to starboard and central banquette seat allowing 2 extra guests to sit at the table.
  • Stowage unit to port of companionway and large oilskin locker.
  • Fitted unit to starboard against forward bulkhead.
  • Fixed saloon table: 1.2 m x 0.9 m with bar built in to centre of table.
  • Aluminum table legs.
  • Cubby-holes and closed stowage units running along the side of the hull, with central bookshelf, behind the banquette backs.
  • Hull liner in wood.
  • 5 ceiling lights and 2 bulkhead lights.
  • T60 opening deck hatch with built-in black-out blind and mosquito netting.
  • 1 ventilator.
  • Hull port to starboard.

Linear Galley

  • Headroom: 1.96 m
  • Corian® worktop with wooden fiddle.
  • Double sink with synthetic resin cover doubling as a chopping-board.
  • Waste bin below sink. Table waste bin built in to worktop.
  • Under-sink storage and cutlery drawer.
  • Sliding storage bins.
  • Stowage cubby holes along side of hull.
  • Gimbal-mounted stainless 'Bretagne Evolution' 3-ring gas cooker with grill/oven, with stainless fiddle and anchor- point for safety strop.
  • Bottle stowage.
  • System for securing crockery in dedicated unit fitted with pegs
  • Central hull port.
  • T60 deck hatch 5 ceiling lights and one spotlight.
  • 175 l top-opening 12 V-operated cool-box.
  • 100 l freezer available as an option.
  • 130 l front-opening 12 V refrigerator.

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Miscellaneous

  • Crockery set: Design square monogrammed diner service for 10 person
  • GPS Inmarsat D+ This system will enable the Dufour 525 grand'large owner to remotely locate his yacht from Internet in real time, and be informed of any intrusion on board.

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Technical Data

Architects Umberto Felci / Patrick Roséo
L.O.A. 15.32 m
Hull length 14.99 m
LWL 13.74 m
Max beam 4.90 m
Light displacement (approx.): 16,200 Kg
Draft, standard cast-iron keel (shallow): 2.00 m
Ballast weight (shallow): 4,850 Kg
Draft, optional cast-iron/lead keel (long): 2.35 m
Ballast weight (long): 4,500 kg
Fuel capacity 500 L
Water capacity 750 L
Engine power 75 hp

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Sail Area

Sail area, close-hauled 128.30 m2
Mainsail 59.50 m2
Genoa (140%) 68.80 m2
Asymmetric spinnaker (approx.) 164.00 m2

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Sail Plan

I 17.60 m
J 5.58 m
P 17.25 m
E 5.78 m
LP (140 % overlap) 7.81 m

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