BENETEAU OCEANIS 31 User manual

OCEANIS 31
Code: 082494
Index G
Owner's Manual

Welcome aboard
Madam, Sir,
You have just taken delivery of your new BENETEAU boat and we thank you for the confidence you have shown us in ordering a vessel
of our brand. The whole BENETEAU team welcomes you aboard.
A BENETEAU is made to last, in order to bring you all the pleasure you expect from a vessel over a period of many years. Each boat is
subject to the utmost attention to detail from the design stage right through to launching.
This manual is meant to help you to enjoy your boat comfortably and safely. It includes the boat specifications, the equipment provided or
installed, the systems and tips on her operation and maintenance. Some of the equipment described in this manual may be optional.
Your BENETEAU dealer will be able to help and advise you in the use and maintenance of your boat.
Read this user's guide/owner's manual carefully and get to know your boat before using it.
The better you know your vessel the more pleasure you will get from being at the helm.
The sea is a source for learning. Caution based on a knowledge of one's own limits and those of the boat is the pre-requisite for an
accomplished sailor.
Even when your boat has been adapted for them, the sea and wind conditions corresponding to the design categories A, B, C and D may
vary, ranging from severe conditions to strong storms subject to the risks of exceptional waves and gusts of wind, this meaning they are
dangerous conditions in which only an experienced, fit and well trained crew manoeuvring a well maintained boat can sail in a satisfactory
manner.
This user's guide/owner's manual is not a course in safety at sea or about sailing sense. If this is your first boat or if you change to a new
type of boat which you are not used to, get some training in boat control and sailing to ensure your safety and comfort. Your dealer, your
international sailing association or your yacht club will be very happy to recommend local sailing schools or professional instructors.
Make sure the sea and wind conditions will correspond to the category of your boat and you and your crew are able to handle the
boat in these conditions.
Always listen to the weather forecast before you put out to sea.
Keep this user's guide/owner's manual in a safe place and hand it over to the new owner if you sell your boat.
You are advised to keep all the instructions and manuals provided by the boat equipment manufacturers (accessories...) in
the same place as this manual

1
Introduction
The users of the boat are informed of the following:
This user guide/owner's manual is not a maintenance or repair guide.
In case of difficulty do not hesitate to call on the services of your
concessionaire BENETEAU.
Any alterations which may affect the safety specifications of the boat
must be assessed, carried out and recorded by persons qualified to do so.
Any change in the distribution of the vessel's mass (adding a radar, altering
the mast, changing an engine, etc) may affect the stability, trim and
performance of your boat.
The BENETEAU shipyards may not beheld responsible forany alterations
which they have not approved.
The complete crew must be equipped appropriately.
In numerous countries, a licence, an authorization or a training course
is requested. Make sure you have this legal authorization before you use
your boat.
Adaptthe useof yourboat toher conditionthatwearsoutwithtimeand
use.Any boat, however solid she may be, may be severely damaged if
badly used. This is not compatible with safe navigation. Always adapt the
speed and direction of your boat to the conditions of the sea.
The boat shall not be loaded more with than the maximum load
recommended by the builder, in particular the total weight of the food
supplies, of the different equipment that are not supplied by the builder and
of the persons on board.
The weight of the boat shall be properly distributed.
The stability is reduced when you add weight in the upper parts.
In case of heavy weather, the hatches, lockers and doors shall be
closed in order to minimize the risk of water coming in.
Breaking waves are a serious threat to stability.
The water in the bilge shall be kept at its minimum.
The stability may be reduced when you tow a boat or when you lift
heavy weights with the davits or the boom.
If your boat is equipped with a liferaft, carefully read the instructions.
The boat must have on board all the proper safety equipment (lifejackets,
buoys, harness, flares, liferafts, etc.) depending on the type of vessel, its
certification, the country, the weather conditions encountered, etc.
The crew must be familiar with the use of all the safety equipment and
the emergency safety procedures (MOB, towing etc.). Sailing schools
organise regular training sessions.
Anyone on the deck shall wear a life jacket or a buoyancy aid.
The safety regulations as defined by the sailing code and enforced by the
’’COLREG’’ should be observed.

2
Introduction
Name plate:
Some of the data is shown on the manufacturer's plate fixed to the
boat. The explanation of the data is given in the appropriate chapters
of this manual.
Identification of vessel:
The vessel's identification is found on the builder's certificate
delivered with the boat and is engraved on the starboard aft side.
So as to be able to continuously improve their product the
BENETEAU shipyards reserve the right to make any alterations in
design, layout or equipment which they judge necessary.
That is the reason why the specifications and information given are
not contractual, they may be modified without prior notice or up dates.
This owner's manual is designed in accordance with the ISO 10240
standard requirements, it has a general purpose and it may
sometimes list some equipment or accessories or deal with some
points or questions that are not relevant to your own boat.
Thedifferentwarningsusedthroughout thisguidearebrokendownas
follows.
DANGER
Indicates the existence of a serious inherent danger with a high
risk of death or serious injury if the appropriate precautions are
not taken
WARNING
Indicates the existence of a danger which could lead to injury or
death if the appropriate precautions are not taken
PRECAUTION
Indicates a reminder of safety practice or draws attention to
dangerous practices which could cause injury to persons or
damage to the vessel or to its components
ADVICE -RECOMMENDATION
Indicates a recommendation or advice for carrying out
manoeuvres appropriate for the planned manoeuvres

3
Introduction
HISTORY OF UPDATES
•Index A........................................................................................01/2008
•Index B.......................Page 16................................................... 11/2008
•Index C ......................Page 16, 52, 54.......................................12/2008
•Index D .......................................................................................07/2009
•Index E........................................................................................ 11/2009
•Index F........................................................................................09/2010
•Index G.......................................................................................09/2012

5
Contents
............................................................. Introduction
7 ..........................................General specifications
13 .................................................................Safety
31 .....................................................................Hull
35 ...................................................................Deck
45 ................................................. Steering system
59 ................................................Rigging and sails
73 ................................................................Interior
79 ................................... Water and sewage water
93 ...........................................Electrical equipment
107 ..............................................................Engine
123 .........................................................Launching
129 .................................................Winter Storage
........................................................Personal notes
1
2
3
4
5
6
7
8
9
10
10
11
11
12
12

7
General specifications
Technical specifications
Certification
Design category
Your boat
1

8
TECHNICAL SPECIFICATIONS OCEANIS 31
L.O.A...........................................................................................9,66 m
Hull length ...................................................................................9,30 m
L.W.L...........................................................................................8,69 m
Overall width ...............................................................................3,39 m
Beam...........................................................................................3,39 m
Waterline beam...........................................................................2,70 m
Air draught -Empty vessel.........................................................14,20 m
KEELED VERSION
Draught Deep draught keel.........................................................1,80 m
Ballast weight Deep draught keel................................................994 kg
Light displacement - Deep keel................................................4 530 kg
Maximum load displacement - deep keel.................................6 320 kg
Draught Shallow draught keel.....................................................1,30 m
Ballast weight shallow draught.................................................1 091 kg
Light displacement - Shallow keel............................................4 530 kg
Maximum load displacement - shallow keel.............................6 410 kg
Maximum load recommended by the builder ...........................1 790 kg
DRIFTER VERSION
Ballast weight...........................................................................1 355 kg
Draught - Drift observed..............................................................1,30 m
Draught - Low drift.......................................................................2,20 m
Light displacement ...................................................................4 850 kg
Displacement with maximum load............................................6 640 kg
Maximum load recommended by the builder ...........................1 790 kg
Including the mass of the persons who are authorized on board (75 kg/
165 lbsperadult),the supplies,the liquidsthat canbeused(fresh water
and fuel) in fixed completely full tanks, the additional loads, the optional
equipments, the liferaft and the scope for load.
Total mass of liquids (all tanks full) .........................................474 kg
Freshwater capacity.......................................................130 l + 160 l
Sewage water capacity ................................................................80 l
Fuel oil tank capacity..................................................................130 l
Refrigeration unit capacity..........................................................100 l
Recommended maximum power..............................................25 kW
Battery capacity - Engine ........................................................... 70 A
Battery capacity - Service........................................................... 70 A
Battery capacity - additional....................................................... 70 A
Cabins..............................................................................................2
Sleeping capacity......................................................4 (+ 2 in option)
Build material: ................................................... Laminated polyester
Architect ................................................................Jean-Marie FINOT
Interior design
...................................................................Nauta Design
Note: The capacities indicated are maximum (including
options).
General specifications

9
General specifications
1
CERTIFICATION
KEELED VERSION
DRIFTER VERSION
DEFINITION OF DESIGN CATEGORIES
The OCEANIS 31 model conforms to the directive 2003/44/CE
CE Category Persons Maximum
A-
B 6 persons
C 8 persons
D 10 persons
CE Category Persons Maximum
A-
B 6 persons
C 8 persons
D 10 persons
Design category Wind force (Beaufort scale) Significant height of waves to be consi- dered
(in metres H 1/3)
Vessel designed for navigation:
A - "At high sea"
B - "In open sea"
C - "Near to the coast"
D - "In sheltered waters"
Over 8
Up to and including 8
Up to and including 6
Up to and including 4
Over 4
Up to and including 4
Up to and including 2
Up to and including 0,3
SAILS - VERSION CLASSIC VERSION -JIB REEFER
Mainsail (classic) .......
24,60 m²
Genoa...........24,60 m²
Spinnaker...........75 m²
I......................11,80 m
J.......................3,67 m
P ...................10,90 m
E ......................3,90 m
Mainsail (classic) .......
19,50 m²
Genoa........... 24,60 m²
Spinnaker .......... 75 m²
I ..................... 11,80 m
J....................... 3,67 m
P ................... 10,69 m
E...................... 3,90 m
The sails are the main propulsion means of the OCEANIS 31.

10
Category A: At high sea
This craft is designed to operate in winds that may exceed wind force 8
(Beaufort scale) and in significant wave heights of 4 m and above.
This craft is largely self-sufficient. Abnormal conditions such as
hurricanes are excluded.
Such conditions may be encountered on extended voyages, for
example across oceans, or inshore when unsheltered from the wind
and waves for several hundred nautical miles.
Category B: In open sea
This craft is designedto operate in windsup to Beaufort force 8 and the
associated wave heights (significant wave height up to 4 m, see Note 1
below).
Such conditions may be encountered on offshore voyages of sufficient
length,oroncoastalwaterswhenunshelteredfromthewindandwaves
for several dozens of nautical miles.
These conditions may also be experienced on inland seas of sufficient
size for the wave height to be generated.
Category C: Near to the coast
This craft is designedto operate in windsup to Beaufort force 6 and the
associated wave heights (significant wave height up to 2 m, see Note 1
below). You may meet with such conditions in exposed inland waters,
in estuaries and in coastal waters with moderate weather conditions.
Category D: In sheltered waters
This craft is designed to operate in winds up to Beaufort force 4 and the
associated wave heights (occasional maximum waves of 0,5 m height).
Such conditions may be encountered in sheltered inland waters, and in
coastal waters in fine weather.
NOTE:
- The significant wave height is the mean height of the highest one-
thirdofthewaves,whichapproximatelycorresponds tothewaveheight
estimated by an experienced observer. Some waves will be double this
height.
- The creation of different design categories results from the need to
distinguishbetweendifferentlevelsofrisk accordingtothe construction
of the boats.
The parameters for the characteristics are established to define the
conditions of navigation which each category may encounter; they
serve purely to evaluate the boat designs and are not to be used to limit
the geographical areas in which these boats may operate..
- One boat may be classed in several design categories at the same
time, each with their different maximum capabilities.
General specifications

11
BENETEAU (Establishment of the company SPBI)
Z.I. des Mares - BP 66 - 85270 St - Hilaire - de - Riez - FRANCE - Tèl. + 33 (0)2 51 60 50 10 - http://www.beneteau.com
Your boat
Name of the owner:.......................................................................
Address: ........................................................................................
.......................................................................................................
Telephone:.....................................................................................
email:....................................................................................
Name of the boat: ..........................................................................
Delivery date:.................................................................................
Registration number:.......................................................................
Serial number (C.I.N):....................................................................
Entrance door key n°: .....................................................................
Telephone N° / Address to be contacted in case of emer-
gency Engine type
Serial number
Engine key number

13
Safety
Safety Equipment
General information
Gas system
Recommendations for gas
Fight against fire
Bilge pump system
Emergency tiller
2

14
SAFETY EQUIPMENT
REF Designation
1 Swimming ladder (means of coming back onboard)
2 Position of the liferaft (not supplied)
Swimming ladder (Reference 1) Storage locker for liferaft (Reference 2)
Safety

15
Safety
2
DANGER
-Fuel leaks or vapour represent a danger of fire and
explosion.
-Leave the engine compartment ventilated for a long
time before starting the engine.
-There may be danger of fire or explosion if direct
current systems are incorrectly used.
-Some boats are equipped with a retractable ladder or
removable. Make sure the ladder is in place and
deployed as soon as you are on board.
-Reduce speed in waves.
WARNING
-Before you sail, list the compulsory safety equipment.
-Don't exceed the number of persons indicated in the
chapter 'Specifications'.
-The total weight of the persons and equipment must
never exceed the maximum load recommended by
the manufacturer.
-Use the seats provided.
ADVICE -RECOMMENDATION
-When sailing, never padlock or lock the liferaft locker.
-Before putting to sea, carefully read the launching
instructions shown on the liferaft.
-Close the deck hatches and portholes before each trip
(including the companionway hatch in heavy
weather).
-Don't store anything below the floorboards.
-Ensure that movable items are firmly secured when
the boat is under way.
GENERAL INFORMATION
DANGERS
The major hazards concern:
- The gas system.
- The electrical system.
- Manoeuvring the vessel and the sails.
- The motorisation.
Please refer to the relevant paragraphs.

16
GAS SYSTEM
OPERATION
Note: Same position for the other layouts.
Supply valve - Gas
Reference 2 Valve
6. Open valve
7. Closed valve
5 4 1 23
Gas cylinder locker
Reference 1
Safety
REF Designation
1 Supply valve - Gas
2 Cooker / Oven
3 Gas cylinder locker
4 Regulator valve
5 Drain - Gas cylinder locker