Dufour Yachts Grand Large 455 User manual

ENGLISH 22.04.2005
OWNER’S MANUAL

ENGLISH 22-04-05 Page2
DUFOUR 455
Your agent
Name
is DUFOUR YACHTS' representative and will give you all the help you need to solve any
problems you might have during launching and masting, as well as with technical checks for
bringing your boat into service and maintaining it. If necessary, he will help you with the
administrative process of registering your boat.
As soon as you become the owner, familiarize yourself with the manual supplied with your boat,
sign and date the receipt acknowledgements below, and give (or send) the last one to your agent.
Owner’s Manual receipt acknowledgement to be kept in your Manual
I, the undersigned:
Name
Address
owner of DUFOUR 455 no.
confirm that I have received the DUFOUR 455 Owner's Manual and accept its being
written in the French language.
Dated:
Signature:
Detach along dotted line
…………………………………………………………………………………………………………………
Owner's Manual receipt acknowledgement to be returned to DUFOUR YACHTS
1, Rue Blaise Pascal- 17187 PERIGNY CEDEX - FRANCE
I, the undersigned:
Name
Address
owner of DUFOUR 455 no.
confirm that I have received the DUFOUR 455 Owner's Manual and accept its being
written in the French language.
Dated:
Signature:

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DUFOUR 455
CONTENTS
INTRODUCTION___________________________________________________________________________5
I. GENERAL INFORMATION______________________________________________________________ 6
A. Design category ____________________________________________________________________6
B. Certification _______________________________________________________________________6
C. Identification ______________________________________________________________________ 6
D. Builder's plate _____________________________________________________________________7
II. MAIN SPECIFICATIONS______________________________________________________________ 8
III. ELECTRICAL SYSTEMS ______________________________________________________________9
A. Safety and operating instructions for the electrical system _________________________________ 9
B. Installing new equipment ____________________________________________________________ 9
C. Batteries _________________________________________________________________________ 10
D. Electric winch_____________________________________________________________________10
E. 220/110 Volts Installation ___________________________________________________________ 11
IV. GAS INSTALLATION ________________________________________________________________ 12
A. Operating advice __________________________________________________________________ 12
B. Checking the system _______________________________________________________________ 13
C. Changing the gas cylinder___________________________________________________________ 13
V. DRAIN AND SANITATION SYSTEM ___________________________________________________ 14
A. Specifications of the drain system ____________________________________________________ 14
B. Pressurized fresh-water pump _______________________________________________________ 14
C. Sea-cocks_________________________________________________________________________ 15
D. Operation of the sea toilets __________________________________________________________15
VI. FLOODING ________________________________________________________________________ 16
VII. FIRE PROTECTION _________________________________________________________________ 16
A. Installation _______________________________________________________________________ 16
B. Safety instructions _________________________________________________________________ 17
VIII. PROPULSION ENGINE ____________________________________________________________ 18
A. General precautions. _______________________________________________________________ 18
B. Exhaust gas emission _______________________________________________________________ 18
C. Safety____________________________________________________________________________ 18
D. Wintering ________________________________________________________________________19
IX. FUEL INSTALLATION_______________________________________________________________ 19
X. STEERING SYSTEM_________________________________________________________________ 19
A. Steering wheel ____________________________________________________________________19
B. Emergency tiller___________________________________________________________________ 20
XI. NAVIGATION ______________________________________________________________________ 20
XII. LIGHTNING PROTECTION __________________________________________________________ 21
A. Maintenance______________________________________________________________________ 21
B. Protection of people during a thunderstorm____________________________________________ 21
XIII. ENVIRONMENTAL PROTECTION AND SAFETY______________________________________ 21
XIV. SAFETY FACILITIES______________________________________________________________ 22
XV. HANDLING, TRANSPORTING, HAULOUT _____________________________________________ 23
XVI. GUARANTEE, TRANSFER OF OWNERSHIP_________________________________________ 24

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DUFOUR 455
I. Presentation plan ______________________________________________________________________ 28
II. Accommodation layout’ _______________________________________________________________ 29
III. Deck fittings plan ____________________________________________________________________ 30
IV. Sail plan____________________________________________________________________________ 32
V. Halyard and sheet rigging plan _________________________________________________________ 34
VI. 110V Circuit diagram _________________________________________________________________ 36
VII. 220V Circuit diagram _________________________________________________________________ 38
VIII. Charging and power circuit diagram___________________________________________________ 40
IX. 12 V / 220 V Electrical panel diagram____________________________________________________ 42
X. Electrical panel terminal diagram _______________________________________________________ 44
XI. 12 V Electrical installation drawing______________________________________________________46
XII. 220 V Electrical installation drawing_____________________________________________________48
XIII. Steering system drawing _____________________________________________________________50
XIV. Gas system diagram ________________________________________________________________ 52
XV. Abandon ship plan ___________________________________________________________________ 54
XVI. Fresh water system diagram__________________________________________________________ 56
XVII. Drainage system diagram____________________________________________________________ 58
XVIII. Skin fitting location diagram _________________________________________________________ 60
XIX. Engine installation drawing __________________________________________________________ 62
XX. Holding tank fitting drawing - layout 3 cabins _____________________________________________ 64
XXI. Holding tank fitting drawing - layout 4 cabins ___________________________________________ 66

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DUFOUR 455
I
IN NT TR RO OD DU UC CT TI IO ON N
DUFOUR YACHTS is delighted to present you with this manual that will enable you to get
to know your boat better.
This manual has been produced to help you enjoy the use of your boat in complete safety. It
contains details about on board fittings and installations as well as information for use and
maintenance. Read it carefully, in particular to avoid fire and flooding risks, and familiarize
yourself with your boat before using it.
If this is your first boat, or if you are changing to a type of boat you are unfamiliar with, for your
convenience and safety, make sure you gain experience in handling and use before taking
command of your boat. Your agent, your national yachting federation or your yacht club will be
more than happy to recommend local sailing schools or qualified instructors.
KEEP THIS MANUAL IN A SAFE PLACE AND PASS IT ON TO THE NEW OWNER
IF YOU SELL YOUR BOAT.
NOTICE: Our boats are regularly improved in the light of our customers’ experiences and
research by the shipyard, and so the specifications given in this Owner’s Manual are not
contractually binding and may be changed without notice and without any obligation to
update.
This manual is intended to cover as much information as possible, so certain equipment or
paragraphs might not apply to your boat. In case of doubt, please refer to the inventory which
should have been given to you by your agent when you placed your order.

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DUFOUR 455
I
I. . G GE EN NE ER RA AL L I IN NF FO OR RM MA AT TI IO ON N
A
A. . D DE ES SI IG GN N C CA AT TE EG GO OR RY Y
Your DUFOUR 455 comes under the OCEAN-GOING design category (category A).
Under normal conditions of use, your boat is designed to sail in waves higher than 4 m and winds
that are stronger than force 8 (Beaufort scale), for which is it largely self-sufficient.
This sailing capability is equally dependent on the skills of the crew, their physical capacities, the
maintenance of the boat and its equipment.
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,...)
SUMMARY OF DESIGN CATEGORIES
Design
Categories Type of sailing Wind strength (Beaufort) Wind speed Effective wave height to be taken into account
A Ocean-going Superior to 8 Stronger than
21m/s Higher than 4 m
B Open sea Up to and
including Force 8 Up to 21 m/s Up to and including 4 m
C Inshore Up to and
including Force 6 Up to 17 m/s Up to and including 2 m
D Sheltered waters Up to and
including Force 4 Up to 13 m/s Up to and including 0·3 m
B
B. . C CE ER RT TI IF FI IC CA AT TI IO ON N
For ships with hulls longer than 12 m, European Directives require module B (standard EC
exam) combined with module C (builder's affidavit that manufactured boats are conform to
certified ship).
ICNN (Institut pour la Certification et la Normalisation dans le Nautisme) is responsible for
certification. (refer to Safety Compliance Declaration)
C
C. . I ID DE EN NT TI IF FI IC CA AT TI IO ON N
Hull identification number is located on starboard side of rear panel. It contains a series of letters
and numbers that begin with FR-DUF...

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DUFOUR 455
D
D. . B BU UI IL LD DE ER R' 'S S P PL LA AT TE E
Design category of yacht = A: Ocean-going (refer to 1.1)
Maximum number of people = 10
Additional maximum load = 2610 kg
CE 0607
Builder identification plate is located in the cockpit. It
contains important information that is explained below.
: Recommended by the builder for navigation in se
a
conditions for category for which it was built.
: includes 10 people with equipment, personal belongings
and supplies. (includes various tank capacities (water,
diesel fuel,...)
:CE label indicates that the boat complies with all
regulations in the Directive. The sequence of numbers
is the Certification institution's code. In this case, ICNN
(Institut pour la Certification et la Normalisation dans le
N
autisme), La Rochelle (refer to Safety Compliance
Declaration)

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DUFOUR 455
I
II I. . M
MA AI IN N S SP PE EC CI IF FI IC CA AT TI IO ON NS S
Model: DUFOUR 455
Designer: Umberto Felci
Design category A
Notified organization no. CE/0607
LOA: 13·75 m
Hull length: 13·45 m
LWL: 11·91 m
Maximum beam: 4·30 m
Draught: 2·00 m
Mast height clearance: 17·90 m
Ballast weight: 3,000 kg
Light displacement: ( safety) : (incl. safety
equipment): 10,426 kg
Displacement at maximum loading: 13035 kg
Standard mainsail area (approximate) 41·20 m²
Roller-furl Genoa area (approximate) 55·00 m²
Water capacity excluding water-heater
(approximate) 530 L
Diesel capacity (approximate) 250 L
Holding tank (depending on option) 45 L/ 90L
Engine battery 100 Ah
Auxiliary battery (standard version) 200 Ah
Primary means of propulsion Sail
Maximum permissible engine power 55 kW
Nb: in general, various tank capacities for fresh water and diesel fuel are not completely
usable due to trim and ship's load. It is recommended to maintain a diesel fuel reserve
equal to 20%.

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DUFOUR 455
I
II II I. . E EL LE EC CT TR RI IC CA AL L S SY YS ST TE EM MS S
A
A. . S SA AF FE ET TY Y A AN ND D O OP PE ER RA AT TI IN NG G I IN NS ST TR RU UC CT TI IO ON NS S F FO OR R T TH HE E
E
EL LE EC CT TR
RI IC CA AL L S SY YS ST TE EM M
WARNING
Always:
- Check the condition of the batteries (charge and electrolyte level) and the charging
system before putting to sea.
- Disconnect and remove batteries for wintering.
- Do not let battery voltage drop below 10·5 V during wintering.
- Carry spare lamps for all navigation lights and interior lighting. Respect power
ratings, particularly for navigation lights.
- Check operation of the navigational instruments.
- Check operation of navigation lights before night sailings
Never:
- Work on an electrical installation that is live.
- Make any modification to an installation and the relevant diagrams, unless it is
carried out by a electrician qualified in marine electrics.
Check the system every 2 years.
- Change or modify the breaking capacity of overload protection devices.
- Install or replace electrical apparatus or equipment with units requiring higher
current than circuit's minimum current.
- Leave the boat unattended when the electrical installation is powered, with the
exception when applicable of the automatic bilge pump and the fire or theft
protection circuits.
If a fuse or circuit-breaker blows continually, a specialist must be consulted to determine
the origin of the short-circuit.
B
B. . I IN NS ST TA AL LL LI IN NG G N NE EW W E EQ QU UI IP PM ME EN NT T
Since the 1st January 1996, electrical equipment is subject to the European
"electromagnetic compatibility" directive (Ref 89/336/CEE). Hence it is necessary to install
new equipment meeting this standard and bearing the CE mark. Equipment must also be
supplied with a compliance certificate and instructions for use.
In the case of 220 or 110 V installations, use only double-insulated or earthed equipment.
When such equipment is being installed, respect the fitting instructions (conductor size,
protection).
To avoid maintenance problems, be sure to mark in the manual and modifications that may
be made to the electrical diagram.

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DUFOUR 455
C
C. . B BA AT TT TE ER RI IE ES S
The battery capacity has been designed to meet the power requirements of the on-board
accessories. To avoid any problems, it is necessary to keep a close eye on the maintenance
and correct charging of the batteries.
NOTE
- When installing new electrical appliances, take care that the overall consumption of
these appliances remains within the capacity of your batteries.
- Always disconnect the -ve battery terminal before the +ve battery terminal
- Never allow a conductive object (tools, etc…) to bridge the two battery terminals
- When handling batteries, keep them horizontal to avoid spillage of electrolyte. Wear
gloves and protective clothing that will prevent any risk of contact with electrolyte in
the event of a leak.
- In the event of electrolyte splashes, rinse the affected part of the body copiously and
consult a doctor.
D
D. . E EL LE EC CT TR RI IC C W WI IN NC CH H
NOTE
It is essential to run the engine with the throttle slightly open when using the electric
winch.

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DUFOUR 455
E
E. . 2 22 20 0/ /1 11 10 0 V VO OL LT TS S I IN NS ST TA AL LL LA AT TI IO ON N
- Your boat is not supplied with a shore/boat supply cable or a plug for the shore outlet.
The cable must be suitable for outdoor use. Its cross-sectional area must be adjusted
according to its length and the rating of the main circuit-breaker (see electrical
diagram). The plug must be suitable for the socket on the shore (if necessary, seek the
advice of a professional. It should be as near as possible to the IP 67 / IEC529 type
- Disconnect boat's power supply when system is not in use.
- Connect electrical cases or metallic covers for installed electrical equipment to ship's
protective conductor (green wire, or green with yellow stripe wire).
- Use double-insulated or earthed equipment.
WARNING
In order to reduce the risk of electrical shock and fire
- Switch off the shore supply at the on-board isolator before connecting or
disconnecting the shore/boat supply cable.
- Connect the shore/boat supply cable at the boat end before connecting it to
the shore outlet
- Disconnect the shore/boat supply cable at the shore outlet before
disconnecting it at the boat end
- Close the shore outlet cover properly
- Do not modify power connections ship/shore only use compatible
connectors.
WARNING
Never let a ship/shore supply line hang in the water. It may create an electrical field
that could injure or kill nearby swimmers.

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DUFOUR 455
I
IV V. . G GA AS S I IN NS ST TA AL LL LA AT TI IO ON N
A
A. . O OP PE ER RA AT TI IN NG G A AD DV VI IC CE E
- 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.
- Make sure that appliance taps are closed before opening valve on gas cylinder.
ATTENTION!
Appliances burning fuel use up the oxygen in the cabin and release combustion
Products into the boat. Ventilation is required when appliances are alight.
Open the coachroof ports while you are cooking.
-Do not use the stove as a heater.
- Do not obstruct quick access to the elements of the gas installation (cylinder locker,
shut-off valve).
- The gas cylinder must always be stowed in the appropriate and ventilated space
provided. Do the same for spare or empty cylinders. No other equipment should be
stored in this space.
ATTENTION!
Never leave the boat unattended when gas appliances are alight.
- Close all valves in the circuit when the boat is left empty (shut-off valve, regulator
valve), even if the cylinder is considered to be empty.
- After the boat has been shut up, never smoke when going below, and ensure that there
is no smell of gas.
- If you smell gas, close the circuit valves and the cooker taps, ventilate the boat, and
find the leak before using the installation again.
WARNING
In the event of an emergency, the circuit valves must be closed immediately.

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DUFOUR 455
B
B. . C CH HE EC CK KI IN NG G T TH HE E S SY YS ST TE EM M
- The gas system must be tested periodically:
°Close all the cooker taps.
°Open the cooker supply and regulator valves.
°Check all connections are gas-tight using a leak detector or by applying soapy
water.
ATTENTION!
Do not use solutions containing ammonia.
DANGER!
Never use a naked light to look for leaks.
Repairs and modifications to the system should be carried out by a qualified person.
Flexible hoses must be:
- checked regularly, at least once a year,
- replaced if the expiry date marked on the hose is passed,
- replaced five years after the date of manufacture that may be marked on them,
- replaced in the event of deterioration.
C
C. . C CH HA AN NG GI IN NG G T TH HE E G GA AS S C CY YL LI IN ND DE ER R
ATTENTION!
-Close the cooker taps and the one upstream of the cooker.
- Do not smoke nor use a naked light during replacement of the gas cylinder.

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DUFOUR 455
V
V. . D DR RA AI IN N A AN ND D S SA AN NI IT TA AT TI IO ON N S SY YS ST TE EM M
A
A. . S SP PE EC CI IF FI IC CA AT TI IO ON NS S O OF F T TH HE E D DR RA AI IN N S SY YS ST TE EM M
Pump type Theoretical flow rate
Manual 40.5 l / 45 strokes/min
Electric 32 L / min
Read carefully the operating and maintenance instructions for the bilge pump that goes
with your boat.
WARNING!
- Ensure that bilge pumps are in working order before putting to sea
- Know where to find the hand pump and its handle
- Know where to find the switch for the electric pump on the electrical panel
- Clean the well and pump filters regularly
- The bilge pump system is not intended to keep the boat afloat in the event of damage. It is
intended to remove water coming from spray, leaks from seacocks or any other moderate
leaks.
B
B. . P PR RE ES SS SU UR RI IZ ZE ED D F FR RE ES SH H- -W WA AT TE ER R P PU UM MP P
Fresh water is supplied to the sink and washbasins by an electric pump. A filter is
installed upstream of the pump, and must be cleaned regularly. A filter is installed
upstream of the pump, and must be cleaned regularly.
Never allow the pump to run if the tank is empty. Change over to the other tank or
fill up.
Hot water is produced by a water-heater connected to the engine cooling circuit and the
shore electric supply.
After the water-heater has been emptied, make sure that the element is covered before
power is re-applied.

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DUFOUR 455
C
C. . S SE EA A- -C CO OC CK KS S
Sea-cocks are of the ¼-turn type:
- OPEN position: handle in line with sea-cock body,
- CLOSED position: handle perpendicular to sea-cock body.
ATTENTION!
- Never interfere with the tightening of the sea-cocks to the hull. In the event of a leak,
consult a professional.
- In bad weather or when leaving your boat, close all the sanitation system sea-cocks.
- Keep seacocks closed when not being used.
- During wintering, clean and rinse the sea-cocks and skin fittings. Inspect the brass
accessories; slight surface corrosion is normal.
- In the event of more serious corrosion, consult your agent.
D
D. . O OP PE ER RA AT TI IO ON N O OF F T TH HE E H HE EA AD D
- Open the sea water inlet sea-cock.
- Open the bowl emptying sea-cock.
- Set the lever to the “FLUSH” position.
- Operate the pump.
- To empty the bowl and avoid any water slopping when heeling, set the lever to the
"DRY BOWL" position.
- Operate the pump until the bowl is dry.
- Repeat these flushing / emptying operations as many times as is necessary to
ensure complete emptying of the pipes.
- When toilets are not being used, set the lever to the "DRY BOWL" position, or the
"CLEF" position for certain models.
- Close seacocks after use, as the toilet is below the waterline
- Change the toilet seals regularly
Vanne ouverte Vanne fermée
OPEN position CLOSED position

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DUFOUR 455
V
VI I. . F FL LO OO OD DI IN NG G
Boat flooding risks:
- Before putting to sea, always check that portholes, deck hatches and any other
openings that could allow flooding are shut.
- When under sail, close all seacocks, except the engine water intake.
- Periodically check:
- Skin fittings, sea-cocks and pipes are watertight
- Proper emptying of the cockpit drains
- Watertightness of the stern gland.
WARNING!
Cockpit locker lids must be fastened shut before putting to sea. This is particularly
important for the lockers representing a major flooding risk (e.g. starboard helm seat
locker)
V
VI II I. . F FI IR RE E P PR RO OT TE EC CT TI IO ON N
A
A. . I IN NS ST TA AL LL LA AT TI IO ON N
- Fire extinguishers are subject to national regulations, and for this reason they are
not supplied with your boat.
- We recommend you to equip your boat with fire extinguishers meeting the ISO
9094-1 standard, with the following specifications:
a) Minimum capacity per extinguisher: 5A/34B,
b) Minimum combined extinguisher capacity: 10A/68B,
c) 1 extinguisher within:
1 m from cockpit for boat <10 m or 2 m for boat >10m
- 2 m of the extinguisher opening for dowsing the engine,
d) 1 extinguisher within 2 m of the cooker,
e) 1 extinguisher within 5 m of the bunks.
f) CO2 extinguishers may be placed in accommodation areas only where flammable
liquids are present (e.g. galley) or where there is powered electrical equipment.
There must not be more than one CO2 extinguisher per area at risk, and its
maximum capacity must not exceed 2 kg.
Only compatible replacement parts must be used in fire protection systems. They must
bear the same markings and be technically equivalent.
In addition, a fire blanket should be stored close to the galley, very useful in case the
cooker catches fire with oil.

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DUFOUR 455
B
B. . S SA AF FE ET TY Y I IN NS ST TR RU UC CT TI IO ON NS S
NOTE
It is the responsibility of the owner / captain to:
- Have fire-fighting equipment checked in accordance with the stipulations of the
builder and the regulations in your country.
- Replace fire-fighting equipment if it has expired or been discharged, by
extinguishers of equal or greater capacity.
- Show members of the crew:
•The location and operation of fire-fighting equipment
•The location of the engine compartment extinguishing hole (located on the
companionway).
- Ensure that fire-fighting equipment is readily accessible whenever the boat is
occupied.
Never:
- Change any installation on the boat (especially electrical, fuel or gas installations) or
allow unqualified person modify these installations
- Obstruct gangways to emergency exits (deck hatches)
- Obstruct safety controls (gas valves, fuel valves, electrical switches).
- Obstruct fire extinguisher stowages.
- Leave the boat unattended with a cooker or heater alight.
- Use a gas lamp in the boat
- Fill a fuel tank or change a gas cylinder while the engine is running, or the cooker or
heater are alight.
- Smoke while handling fuel or gas.
- Fit free-hanging curtains near the cooker or any other appliance with an open flame.
- Store flammable products in the engine compartment.
Always keep the bilges clean and check that there is no fuel vapor or gas.
WARNING
- If a CO2extinguisher is fitted, the following information must be displayed close to its
location:
"This extinguisher contains CO2 - use only on electrical or cooker fires. To avoid
suffocation after discharging, leave the area immediately. Ventilate before re-entering.”
- Do not open the engine compartment immediately after putting out a fire, to avoid the
release of toxic smoke or spraying of burning materials (oil, water).

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DUFOUR 455
V
VI II II I. . P PR RO OP PU UL LS SI IO ON N E EN NG GI IN NE E
Regular maintenance must be carried out in accordance with the engineer's
recommendations. Read carefully the operating and maintenance instructions for the engine
that goes with your boat. Do not hesitate to consult your agent or a qualified professional.
A
A. . G GE EN NE ER RA AL L P PR RE EC CA AU UT TI IO ON NS S
NOTE
- Ensure that the cooling circuit water intake seacock is open, and that water is coming
out of the engine exhaust.
- Boats fitted with rotating seal stern gland: bleed the air from the gland after each
launch.
- Do not obstruct ventilation openings (vents, engine ventilation grilles).
- Avoid all contact between inflammable materials and hot motor parts.
Regularly check the condition of the anodes and ensure that they are suitable for the boat's
environment (fresh water, salt water).
Any engine change must respect the capacities of the boat and be performed by an engineer
specializing in marine mechanics.
B
B. . E EX XH HA AU US ST T G GA AS S E EM MI IS SS SI IO ON N
DANGER!
Internal combustion engines produce carbon monoxide. Prolonged exposure to exhaust
gasses can have serious consequences, and may even cause death.
C
C. . S SA AF FE ET TY Y
DANGER!
- In order to avoid all risk of serious injury from the propeller, the engine must not be
started when there are swimmers near the boat.
- Whenever possible, the engine must be stopped for any engine maintenance or
checking operations. If not, special attention must be paid to moving items (belts,
shaft, etc...) in order to avoid any risk of injury.
- Do not use sail and engine if the heel angle is more than 10°

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DUFOUR 455
D
D. . W WI IN NT TE ER RI IN NG G
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° anti-freeze coolant,
- Run the engine until the fluid comes out of the exhaust,
- At the end of this operation, re-connect the pipe to the seacock,
- Attach a notice to the electrical panel and the battery isolator to the effect that
the engine water intake seacock is closed.
I
IX X. . F FU UE EL L I IN NS ST TA AL LL LA AT TI IO ON N
In the event of deterioration flexible fuel pipes must be replaced by pipes bearing the same
markings.
ATTENTION!
- Depending on the trim and loading of your boat, the whole of the nominal fuel capacity
may not be usable. Always maintain a 20% reserve for safety.
Never:
- Store flammable materials in unventilated spaces.
- Smoke while filling tanks.
- Modify the installation, unless this is carried out by a technician qualified in this
field.
X
X. . S ST TE EE ER RI IN NG G S SY YS ST TE EM M
The steering system plays a vital rôle in the safety and comfort of your boat.
A
A. . S ST TE EE ER RI IN NG G W WH HE EE EL L
The Dufour 455 is fitted with a dual wheel with a system of rudder cables and chains.
Periodic checks to be performed: check the play in the various components (rudder
stock/bearings, rudder cable tension and wear).
In the event of doubt or a problem, consult your agent.

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DUFOUR 455
B
B. . E EM ME ER RG GE EN NC CY Y T TI IL LL LE ER R
NOTE
- The Dufour 455 is equipped with an emergency tiller that must be kept readily
accessible, we advise you to stow it in a cockpit locker near the tiller deck plate.
- It is only designed for sailing at reduced speed in the event of damage to the helm.
To use it:
- Unscrew the tiller deck plate cover located in the cockpit floor,
- Fit the tiller onto the head of the rudder stock.
X
XI I. . N NA AV VI IG GA AT TI IO ON N
WARNING
- In all situations, suit the speed of your boat to the surrounding conditions and always
maintain a safety margin. Pay particular attention to:
The state of the sea, currents, the strength of the wind.
Other boat movements
Manœuvres in port
When passing through mooring areas.
- Obey the rules of priority as defined in the rules of the road and imposed by the COLREG
- Ensure that you always leave enough room for stopping or manœuvring if necessary to
avoid a collision
- Respect speed limit zones
- Out of courtesy and for the safety of other boats, take care not to create a large wash near
other boats
WARNING
- You must fit your boat with grab lines. Fixing points are provided on the deck. Refer to
your boat's deck fittings drawings.
- The stability of your boat was designed taking into account the shipyard catalogue
options. Any alteration to on-board weight distribution (for example: adding a radar,
changing the engine, etc...) can affect the stability, trim and performance of your boat.
- Towing a boat causes a significant extra strain that will have an unfavourable effect on
the stability of your boat.
- Never:
Use the boom to lift heavy weights.