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Dufour Yachts 350 Grand Large 2015 Owner's Manual

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OWNER'S MANUAL
YACHT DESIGN CATEGORY: A
IN ACCORDANCE WITH EUROPEAN DIRECTIVE 94/25/CE
AS AMENDED BY EUROPEAN DIRECTIVE 2003/44/CE
ENGLISH 09/04/2015
1/81
DUFOUR 350 Grand Large

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Questions and answers

Bjørnar Haugland
May 15, 2025

Where do I measure water and diesel tanks? The dieseltank contains 159 liters or 200 liters. K.R. Bjørnar H.

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2 comments:
Bjørnar Haugland
May 16, 2025

bjornarhaugland@hotmail.com

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Mr. Anderson
May 22, 2025

To measure the water and diesel tanks on a Dufour Yachts 350 Grand Large 2015, refer to the filler deck plates. These are labeled as part of the tank system and connect to the filler hoses and vent hoses. The forward water tank has a capacity of 180 liters. Specific measurement procedures are not detailed, but standard practice includes checking tank gauges if available or visually inspecting levels through the filler opening.

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Summary of Contents for Dufour Yachts 350 Grand Large 2015

  • Page 1 OWNER'S MANUAL YACHT DESIGN CATEGORY: A IN ACCORDANCE WITH EUROPEAN DIRECTIVE 94/25/CE AS AMENDED BY EUROPEAN DIRECTIVE 2003/44/CE ENGLISH 09/04/2015 1/81 DUFOUR 350 Grand Large...
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  • Page 3 I have received the DUFOUR 350 Owner's Manual and accept its being written in the English language. Dated: Signature: Detach along dotted line ………………………………………………………………………………………………………………… Owner's Manual receipt acknowledgement to be returned to DUFOUR YACHTS 11, Rue Blaise Pascal- 17187 PERIGNY CEDEX- FRANCE I, the undersigned: Name Address owner of DUFOUR 350 no.
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  • Page 5: Table Of Contents

    CONTENTS INTRODUCTION ..............................7 GENERAL INFORMATION ......................8 Design category _______________________________________________________ 8 Certification __________________________________________________________ 8 Identification _________________________________________________________ 8 Builder's plate ________________________________________________________ 9 Degrees of danger _____________________________________________________ 9 PRINCIPAL SPECIFICATIONS ....................10 III. ELECTRICAL SYSTEMS ......................... 12 Safety and operating instructions for the electrical system _________________ 12 Fitting new equipment ________________________________________________ 12 Batteries ___________________________________________________________ 13 Electric windlass _____________________________________________________ 13...
  • Page 6 XIV. ENVIRONMENTAL PROTECTION & SAFETY ..............25 SAFETY FACILITIES ......................... 26 XVI. HANDLING, TRANSPORTING, HAULOUT ................26 XVII. MOORING, ANCHORING, AND TOWING ................27 Responsibility _______________________________________________________ 27 XVIII. GUARANTEE, TRANSFER OF OWNERSHIP ..............30 Presentation plan ..........................35 Accommodation layout .........................
  • Page 7 DUFOUR YACHTS is pleased to present you with this Manual which will help you get to know your boat better. This Manual has been produced to help you use your boat safely and enjoyably. It contains details of the boat, the equipment supplied or fitted, its systems and information about their use. Read it carefully and familiarize yourself with the boat before using it.

  • Page 8: Design Category

    So always take care before putting to sea. DUFOUR YACHTS is not able to guarantee perfect functioning of the boat in exceptional sea conditions (violent storms, hurricanes, cyclones, waterspouts, etc.) SUMMARY OF DESIGN CATEGORIES...

  • Page 9: Builder's Plate

    Builder's plate Part of this information is given on the builder’s plate attached to the boat. A full explanation of this information is given below. Design category = A : Ocean-going (see 1.1) Maximum number of people: : Recommended by the builder for navigation in sea Category A = 6 conditions for category for which it was built.
  • Page 10 Model: DUFOUR 350 Grand Large Boatbuilder Dufour Yachts 11, Rue Blaise Pascal 17187 Périgny cedex FRANCE Designer: Umberto Felci Interior design DUFOUR Design Design category Notified body no. CE/0607 Engine # FR-DUFGXXX2XXXX Primary means of propulsion Sail LOA * (with overhang stemhead) 10.30 m (10.73 m)
  • Page 11 : the maximum draft is measured at the lowest points of ballast on board the vessel The Maximum Load is the sum of the maximum recommended load and the total mass of the various liquids (potable or not). Nota bene: due to the trim and loading of the boat, is it not usually possible to use the whole of the various tank capacities for fresh water and diesel.

  • Page 12: Safety And Operating Instructions For The Electrical System

    Safety and operating instructions for the electrical system WARNING Improper use of the DC and/or AC systems may give rise to fire or explosion hazards. Improper use of the AC systems may give rise to electric shock hazards. Always: ● Check the condition of the batteries (charge and electrolyte level) and the charging system before putting to sea.

  • Page 13: Batteries

    Batteries The battery system comprises one 75 Ah auxiliary battery as standard (and 1 additional 75 Ah battery as an option) and one 75 Ah battery for starting the engine. Their capacities have been designed to handle the power requirements of the on-board accessories.

  • Page 14: 220 / 110 Volt Installation (Iso 13297: 2000)

    220 / 110 volt installation (ISO 13297: 2000) DANGER! The on-board 220 V installation is protected by a circuit breaker and fitted with a residual current device. The wiring of additional 220 V on-board accessories must be carried out by professionals, and the master circuit-breaker uprated if necessary.

  • Page 15: Gas Installation

    Operating advice Read carefully all instructions for cooker and regulator before use or maintenance. Ensure that the gas cylinder and regulator are in accordance with the requirements of the cooker (flow rate, pressure, type of gas) and with the regulations in force in the country where it is being used.

  • Page 16: Checking The System(Iso 10239: 2000)

    Checking the system(ISO 10239: 2000) Check the LPG installation for leaks regularly. Test the LPG system for leaks before use. Check that all connections are gas-tight as follows: close all valves on appliances open the valve on the cylinder wait for the pressure to stabilize close the valve on the cylinder watch the pressure level for 3 minutes;...

  • Page 17: Drainage System Characteristics(Iso 15083: 2003)

    Drainage system characteristics (ISO 15083: 2003) Pump type Theoretical flow rate Manual 38 L @ 45 strokes/minute 12V Electrical 2000 L / h Read the operating and maintenance instructions for your boat’s bilge pump carefully. WARNING The bilge pump system is not designed to handle water entering as a result of holing of the hull.

  • Page 18: Seacocks

    Seacocks Seacocks are of the ¼-turn type: - OPEN position: handle in line with seacock body, - CLOSED position: handle perpendicular to seacock body. Vanne ouverte Vanne fermée OPEN position CLOSED position ATTENTION! ● Never interfere with the tightening of the seacocks to the hull. In the event of a leak, consult a professional.

  • Page 19: Installation

    To avoid the risk of flooding the boat: - Before putting to sea, always check that portholes, deck hatches and any other openings that could allow flooding are shut. - While under way, close all seacocks when they are not in use, except for the engine water intake.

  • Page 20: Safety Instructions

    WARNING If a CO extinguisher is fitted, the following information must be displayed close to its location: “This extinguisher contains CO - use only on electrical or cooker fires. To avoid suffocation after discharging, leave the area immediately. Ventilate before re- entering."...

  • Page 21: General Precautions

    Regular maintenance must be carried out in accordance with the engine manufacturer’s recommendations. Read carefully the engine operating instructions that come with the boat. Do not hesitate to consult your agent or a qualified professional. In particular, follow the instructions for wintering. General precautions ATTENTION! Do not use sail and engine if the heel angle is more than 10°.

  • Page 22: Wintering

    Wintering Read carefully the operating and maintenance instructions for the engine that goes with your boat and the instructions for wintering. In the absence of other instructions, proceed as follows: Close the engine water intake seacock, Disconnect the pipe from the engine water intake seacock, Drain the sea-water circuit, Place the pipe into a drum of –25°...

  • Page 23: Emergency Tiller

    Emergency tiller ATTENTION! ● The Dufour 382 is fitted with an emergency tiller which must be kept readily accessible; we advise stowing it in one of the nacelle cockpit lockers. ● It is designed only for sailing at reduced speed in the event of damage to the helm. To use it: - Unscrew the deck-plate to reveal the head of the rudder stock - Fit the tiller onto the head of the rudder stock.

  • Page 24: Maintenance

    While underway, it is recommended to move about on deck only in areas provided for this purpose. These areas (gangways, cockpit, roof, side seats, etc.) are provided with non-skid coatings or teak (depending on option selected) making it safe to move about. On the DUFOUR 350, it is safe to walk on the whole of the working deck within the life-lines.

  • Page 25: Protection Of People During A Thunderstorm

    Protection of people during a thunderstorm WARNING During a thunderstorm, it is recommended that you should comply with the following instructions: ● People should stay below as much as possible. ● People should stay out of the water and not let their arms or legs hang into the water. ●...
  • Page 26 There is no harmonization of mandatory safety equipment across the European Community. You should find out about current national requirements for CE-marked vessels. In France, the skipper is responsible for ensuring that recreational craft bearing the CE mark carry aboard the mandatory handling and safety equipment stipulated for the relevant sailing category.
  • Page 27 ATTENTION! (ISO 15084:2003) ● The anchor points for mooring and / or towing are the 2 front cleats that have a breaking strain of about 6,400 kg. The aft and central cleats can also be used for docking. They have a breaking strain of approximately 6000 kg.
  • Page 28 ENGLISH 09/04/2015 28/81 DUFOUR 350 Grand Large...
  • Page 29 ENGLISH 09/04/2015 29/81 DUFOUR 350 Grand Large...
  • Page 30 It is stipulated that any handling, transport, parking, or convoying costs incurred in carrying out these operations remain the sole liability of the buyer/user, unless DUFOUR YACHTS yacht-builders offer to waive them in full or in part. A) CONTRACTUAL GUARANTEES ...
  • Page 31 Any claim under these guarantee conditions must be when he is liable for this under the contract or it has made formally to DUFOUR YACHTS in writing as soon as been carried out under his responsibility.” the defect is discovered, and within eight (8) days for claims under the contractual guarantee.
  • Page 32 Date of Purchase: ..................... Signed at ........date ............Le vendeur / Seller Buyer Signed for DUFOUR YACHTS on: ... Return the copy within 15 days of completing the transaction to: SAV DUFOUR YACHTS 11 rue Blaise Pascal 17187 PERIGNY CEDEX FRANCE...
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  • Page 34 DRAWINGS Presentation plan ..........................35 Accommodation layout ......................... 36 Deck fittings plan ..........................38 Sail plan ..............................40 Halyard and sheet operating diagram ................. 42 220 V circuit diagram ........................44 Charging and power system diagram .................. 46 12 V electric panel ...........................
  • Page 35 ENGLISH 09/04/2015 Page 35/81 DUFOUR 350 GRAND LARGE...
  • Page 36 Label Description 2 cabin version 3 cabin version ENGLISH 09/04/2015 Page 36/81 DUFOUR 350 GRAND LARGE...
  • Page 37 ENGLISH 09/04/2015 Page 37/81 DUFOUR 350 GRAND LARGE...
  • Page 38 Description remarks LIFE-LINE ANCHOR Cleats, port & starboard TOWING POINTS Port & Starboard HATCHES MUST BE CLOSED WHEN UNDERWAY "MAN OVERBOARD" REBOARDING LADDER LIFE RAFT STOWAGE ANCHOR POINT FOR SAFETY HARNESS LOCKER THAT MUST BE CLOSED WHEN UNDERWAY DINGHY STOWAGE STEMHEAD FITTING Watertight chainplate, 8 mm Ø...
  • Page 39 ENGLISH 09/04/2015 Page 39/81 DUFOUR 350 GRAND LARGE...
  • Page 40 12.70 m 3.75 m 12.07 m 4.50 m Self-tacking jib LP 3.17 m Mainsail area 34.5 m² Self-tacking jib surface area 20.5 m² Genoa area * 25.5 m² * Optional ENGLISH 09/04/2015 Page 40/81 DUFOUR 350 GRAND LARGE...
  • Page 41 ENGLISH 09/04/2015 Page 41/81 DUFOUR 350 GRAND LARGE...
  • Page 42 Label Description standard mast Self-tacking jib sheet Main halyard Reef 2 Rigid boom vang* Mainsheet Reef 1 Spinnaker halyard * Genoa halyard Genoa sheet * Spinnaker sheet * Spinnaker tack * Furling line Option ENGLISH 09/04/2015 Page 42/81 DUFOUR 350 GRAND LARGE...
  • Page 43 ENGLISH 09/04/2015 Page 43/81 DUFOUR 350 GRAND LARGE...
  • Page 44 Label Description Facilities 220V Shore cable ** Shore AC connection 16A Electrical box with main circuit breaker Charger CE waterproof plug connection Water heater 220V10A outlets Connector (back panel of electrical cabinet) 12-way connector Electrical wiring colours light blue green brown black green/yellow...
  • Page 45 ENGLISH 09/04/2015 Page 45/81 DUFOUR 350 GRAND LARGE...
  • Page 46 Label Description Windlass * Windlass remote control * Remote control relay * 8 A fuse Battery charger * 12V distribution panel Single-pole 70 A circuit breaker* Auxiliary batteries (1 as std + 1 as option*) 125 A fuse (auxiliary) House batteries switch 5 A fuse* Alternator Distributor...
  • Page 47 ENGLISH 09/04/2015 Page 47/81 DUFOUR 350 GRAND LARGE...
  • Page 48 Label Description Protection 12 V distribution panel Deck light / Spares 1 Miscellaneous 2 Windlass Pressurized water system Bilge pump Shower pump Navigation lights Mooring light Steaming light Fridge unit Navigation instrument pack Auto pilot Saloon lights Cabins lighting Hifi / 12 V outlet ENGLISH 09/04/2015 Page 48/81 DUFOUR 350 GRAND LARGE...
  • Page 49 ENGLISH 09/04/2015 Page 49/81 DUFOUR 350 GRAND LARGE...
  • Page 50 Label Description A Connector Pressurized water system Battery positive Fridge thermostat relay Bilge pump Navigation equipment * Shower drain pump Battery negative Autopilot B connector Navigation lights and compass Battery positive Saloon and chart table lights Mooring light Cabin and toilet lights Steaming light* Battery negative HIFI *...
  • Page 51 ENGLISH 09/04/2015 Page 51/81 DUFOUR 350 GRAND LARGE...
  • Page 52 A-Layout 2 cabins B-Layout 3 cabins Label Description Windlass * Windlass relay * Windlass remote control* Navigation lights * Fresh-water gauge * Reading lights Water pump unit Saloon loudspeaker 12V electric panel Switch for LED gooseneck Gas solenoid valve* Submersible bilge pump Steaming light Mooring light Deck light...
  • Page 53 ENGLISH 09/04/2015 Page 53/81 DUFOUR 350 GRAND LARGE...
  • Page 54 ENGLISH 09/04/2015 Page 54/81 DUFOUR 350 GRAND LARGE...
  • Page 55 A-Layout 2 cabins B-Layout 3 cabins Label Description 220 V (or 110 V) outlet Water heater Battery charger Main circuit-breaker box G Connectors Shore AC connection Water-heater waterproof plug ENGLISH 09/04/2015 Page 55/81 DUFOUR 350 GRAND LARGE...
  • Page 56 ENGLISH 09/04/2015 Page 56/81 DUFOUR 350 GRAND LARGE...
  • Page 57 ENGLISH 09/04/2015 Page 57/81 DUFOUR 350 GRAND LARGE...
  • Page 58 Label Description Zone A - 12 V Strip fuse 500A: optional bow thruster* Zone B - 12 V Differential circuit-breaker 70A: windlass* Blade fuse 1A: with gas solenoid valve* Blade fuse 40A: with auto-pilot option* Blade fuse 3A: with heating option* Blade fuse 5A: with windlass option* Blade fuse 5A: with navigation instrument pack option* Blade fuse 30A: optional inverter *...
  • Page 59 ENGLISH 09/04/2015 Page 59/81 DUFOUR 350 GRAND LARGE...
  • Page 60 13 - Label Description Rudder blade + stock Rudder trunk Lower bearing Rudder bearings assembly Top bearing 80 deg section Section stop Chain and rudder cable kit Rudder cable sheaves Spacer sheaves Steering cable guide plates Port bulkhead device Starboard bulkhead fitting + brake Steering wheel Autopilot motor* Helm angle indicator*...
  • Page 61 ENGLISH 09/04/2015 Page 61/81 DUFOUR 350 GRAND LARGE...
  • Page 62 14 - Label Description 11 lbs (1.8 kg) gas cylinder ** CE shut-off valve (Fr. or Ger.) ** 30 mbar CE regulator (Fr. or Ger.) ** / Pressure gauge Medium-length connecting hose Spacer / tube 6 x 8 Watertight bulkhead fitting PVC pipe 6x8 copper pipe CE gas shut-off valve...
  • Page 63 ENGLISH 09/04/2015 Page 63/81 DUFOUR 350 GRAND LARGE...
  • Page 64 Label Description Recommended fire-extinguishers locations Cockpit locker: 1 kg powder fire-extinguisher 5A/34B Saloon banquette: 1 kg powder fire-extinguisher 5A/34B ** Starboard aft Cabin: 1 kg powder fire-extinguisher 5A/34B ** Engine compartment extinguishing hole Emergency exit Fire blanket (recommended location) Not supplied ENGLISH 09/04/2015 Page 64/81 DUFOUR 350 GRAND LARGE...
  • Page 65 ENGLISH 09/04/2015 Page 65/81 DUFOUR 350 GRAND LARGE...
  • Page 66 Label Description Filler deck plate Filler hose Vent Vent hose Foreward water tank 180 l* Aft water tank, 200 L Hot water pipe Cold water pipe Pressurized water pump unit Fresh-water pump Water heater Head shower single-lever mixer tap Galley single-lever mixer tap Deck shower Tank selection valves set 1/2"...
  • Page 67 ENGLISH 09/04/2015 Page 67/81 DUFOUR 350 GRAND LARGE...
  • Page 68 17 - Label Description Electric bilge pump Ø25 discharge hose SuperSub submersible bilge pump Skin fitting 1" Manual bilge pump Strainer with non-return valve D25 Ø25 discharge hose Manual bilge pump Skin fitting 1" ENGLISH 09/04/2015 Page 68/81 DUFOUR 350 GRAND LARGE...
  • Page 69 ENGLISH 09/04/2015 Page 69/81 DUFOUR 350 GRAND LARGE...
  • Page 70 18 - A-Layout 2 cabins B-Layout 3 cabins Label Description Ø Skin-fittings + seacocks Galley sink discharge 1" Wash-basin / shower outlet 1" Toilet sea-water intake 3/4" Toilet discharge 1-1/2" Foot pump sea water intake* 1/2" Skin-fitting Anchor locker discharge 1"...
  • Page 71 ENGLISH 09/04/2015 Page 71/81 DUFOUR 350 GRAND LARGE...
  • Page 72 ENGLISH 09/04/2015 Page 72/81 DUFOUR 350 GRAND LARGE...
  • Page 73 Label Description Engine Polyester frame Sail Drive Anode Propeller Foam insulation Anti-siphon elbow Waterlock silencer Exhaust outlet Bilge fan Ventilation grilles Starting battery Isolator Charge splitter Engine lever Engine instruments ENGLISH 09/04/2015 Page 73/81 DUFOUR 350 GRAND LARGE...
  • Page 74 ENGLISH 09/04/2015 Page 74/81 DUFOUR 350 GRAND LARGE...
  • Page 75 Label Description Fuel tank Fuel shut-off valve Overflow vent Fuel deck plate Tank vent Fuel pre-filter ENGLISH 09/04/2015 Page 75/81 DUFOUR 350 GRAND LARGE...
  • Page 76 ENGLISH 09/04/2015 Page 76/81 DUFOUR 350 GRAND LARGE...
  • Page 77 Label Description Skin fitting & seacock, ¾" Waste deck plate 50 mm Ø Skin fittings & 1-½" seacock 20 mm Ø hose 38 mm Ø anti-odour hose 51 D anti-odor hose ¾" chromed brass vent Holding Tank, 50 L 50 L polythene holding tank* U-bend * Optional ENGLISH 09/04/2015...
  • Page 78 ENGLISH 09/04/2015 Page 78/81 DUFOUR 350 GRAND LARGE...
  • Page 79 Label Description See red triangular marker under deck-line Light displacement: 5,764 kg Midship beam: 3.54 m Standard Draught: 1.90 m ENGLISH 09/04/2015 Page 79/81 DUFOUR 350 GRAND LARGE...
  • Page 80 ENGLISH 09/04/2015 Page 80/81 DUFOUR 350 GRAND LARGE...
  • Page 81 NOTES ENGLISH 09/04/2015 Page 81/81 DUFOUR 350 GRAND LARGE...

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