MAREX 375 User manual

Our quality
Your safety and boat pleasure
You are now the owner of quality product from MAREX. Your boat is built by the
highest standards of safety and quality for your safety and pleasure.
The owner’s manual is written so that you as a boat owner can have the best
possibilities to get experienced with the boat and its functions. The owner’s manual
contains important information about handling, safety, systems, equipment
mounted or delivered with the boat. You will also find useful information about use
and maintenance.
It is recommended that you make yourself acquainted with the boats maneuvering
ability and properties before you start to use it, regardless of previous boating
experience. Your local dealer can assist you in finding an instructor or boating
school.
Please study the owner’s manual carefully before using the boat.
Producer:
MAREX Boats UAB
Eglių g. 1, Ilgakiemio km., Garliavos sen.,
LT-53288 Kauno r.,
Lithuania
Phone: [phone]
Fax: [phone]
E-mail: [email protected]t
MAREX
CONGRATULATES YOU
WITH YOUR NEW
Marex 375

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Contents
1.0 GENERAL INTRODUCTION...................................................................................4
1.1 INSTALLED EQUIPMENT ...............................................................................................................6
1.2 SYMBOLS USED IN THE OWNER’S MANUAL ..............................................................................6
1.3 CONSTRUCTION CATEGORIES....................................................................................................7
1.4 ABOUT THIS OWNER’S MANUAL..................................................................................................8
2.0 TECHNICAL DATA.................................................................................................9
2.1 GENERAL TECHNICAL DATA........................................................................................................9
2.2 HULL ................................................................................................................................................9
2.3 WINDSCREEN...............................................................................................................................11
2.4 ENGINE..........................................................................................................................................11
2.5 ELECTRIC SYSTEM......................................................................................................................11
2.6 CAPACITIES..................................................................................................................................12
3.0 SAFETY ................................................................................................................13
3.1 GENERAL......................................................................................................................................13
3.2 FIRE ...............................................................................................................................................14
3.2.1 PORTABLE FIRE EXTINGUISHER .......................................................................................14
3.2.2 AUTOMATIC FIRE EXTINGUISHER .....................................................................................15
3.2.3 FIRE ALARM ..........................................................................................................................17
3.3 COOKER AND OVEN....................................................................................................................17
3.3.1 GAS INSTALLATION AND LEAKAGE TEST INSTRUCTION..............................................20
3.4 ELECTRIC SYSTEM......................................................................................................................21
3.5 BATTERIES ...................................................................................................................................21
3.6 ENGINE ROOM .............................................................................................................................22
3.7 FUEL TANK....................................................................................................................................22
3.8 THROUGH HULL LEADS - UNDER THE WATERLINE................................................................23
3.8.1 CLOSING VALVE - SEAWATER INLET FOR THE TOILET SYSTEM..................................23
3.8.2 CLOSING VALVE - BLACKWATER OUTLET........................................................................24
3.8.3 CLOSING VALVE - SEAWATER INLET FOR ENGINE COOLING.......................................25
3.9 STABILITY AND BUOYANCY .......................................................................................................25
3.10 SAFETY EQUIPMENT.................................................................................................................26
3.11 EMERGENCY EXITS...................................................................................................................27
3.12 EMERGENCY STEERING...........................................................................................................27
4.0 DRAWINGS AND TECHNICAL DESCRIPTIONS OFTHE BOAT ........................28
4.1 ARRANGEMENT AND EXTERIOR DRAWINGS..........................................................................28
4.2 TECHNICAL SYSTEMS.................................................................................................................28

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4.2.1 DRAWINGS OF THE TECHNICAL SYSTEMS......................................................................28
4.2.2 PICTURES AND DESCRIPTION OF INSTALLED COMPONENTS......................................29
4.3 FUEL SYSTEM ..............................................................................................................................29
4.4 DRAINING SYSTEM......................................................................................................................31
4.5 LENSING SYSTEM........................................................................................................................32
4.5.1 MANUAL LENSING SYSTEM ................................................................................................32
4.5.2 AUTOMATIC LENSING SYSTEM..........................................................................................32
4.6 FRESH WATER SYSTEM.............................................................................................................34
4.7 SEPTIC SYSTEM/BLACK WATER SYSTEM................................................................................36
4.8 ELECTRIC SYSTEM......................................................................................................................39
4.9 EXHAUST SYSTEM ......................................................................................................................41
4.10 VENTILATION SYSTEM FOR THE ENGINE..............................................................................42
4.11 FIRE EXTINGUISHING SYSTEM................................................................................................42
5.0 OPERATION .........................................................................................................44
5.1 STARTING OF THE ENGINE........................................................................................................44
5.2 BATTERIES (LEAD ACCUMULATORS).......................................................................................45
5.3 FUSE PANEL & CONNECTION SCHEMES .................................................................................47
5.4 MAIN SWITCH PANEL ..................................................................................................................47
5.5 WINDSCREEN WIPERS ...............................................................................................................48
5.6 DASHBOARD INSTRUMENTS INSTALLATION ACCESS...........................................................48
5.7 ELECTRIC SYSTEM......................................................................................................................49
5.8 SEPTIC SYSTEM ..........................................................................................................................52
5.9 OPERATING OTHER EQUIPMENT..............................................................................................55
5.9.1 COOKER AND OVEN ............................................................................................................55
5.9.2 DEFROSTER..........................................................................................................................55
5.9.3 DIESEL HEATER....................................................................................................................56
5.10 MANOEUVRING OF THE BOAT.................................................................................................57
5.11 HINTS AND ADVICES.................................................................................................................60
5.11.1 LIFTING AND STORAGE IN A “CRADLE”...........................................................................60
5.11.2 BOAT TRANSPORT.............................................................................................................61
5.11.3 BOAT MOORING..................................................................................................................61
5.11.4 BOAT ANCHORING.............................................................................................................62
5.11.5 TOWING AND BEING TOWED............................................................................................62
6.0 PERIODIC MAINTENANCE..................................................................................63
6.1 MAINTENANCE OF THE HULL.....................................................................................................63
6.1.1 BEFORE PLACING THE BOAT ON WATER.........................................................................63
6.1.2 BEFORE WINTER STORAGE...............................................................................................63

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6.1.3 NORMAL MAINTENANCE .....................................................................................................64
6.2 MAINTENANCE OF THE TEAK DECK .........................................................................................64
6.3 MAINTENANCE OF THE ENGINE AND THE DRIVE...................................................................64
6.4 MAINTENANCE OF THE STEERING SYSTEM ...........................................................................64
6.5 MAINTENANCE AND CONTROLLING OF THE ELECTRIC SYSTEM........................................65
6.6 MAINTENANCE OF THE GAS SYSTEM ......................................................................................66
6.7 MAINTENANCE OF THE FUEL SYSTEM.....................................................................................67
6.8 MAINTENANCE OF THE LENSING SYSTEM..............................................................................68
6.9 MAINTENANCE OF THE FIRE EXTINGUISHERS.......................................................................69
6.10 MAINTENANCE OF THE FRESH WATER TANKS ....................................................................69
6.11 MAINTENANCE OF THE FENDER LIST ....................................................................................69
7.0 PREPARING FOR THE SEASON.........................................................................70
7.1 GENERAL PREPARATION...........................................................................................................70
7.2 PREPARING THE ENGINE AND THE DRIVE..............................................................................70
7.3 PREPARING THE STEERING ......................................................................................................70
7.4 OTHER EQUIPMENT ....................................................................................................................71
7.5 REMOVING RUST/CORROSION..................................................................................................71
8.0 WINTER STORAGE PREPARATION...................................................................72
8.1 BATTERIES ...................................................................................................................................72
8.2 HULL ..............................................................................................................................................72
8.3 STEERING SYSTEM.....................................................................................................................72
8.4 SEPTIC SYSTEM ..........................................................................................................................73
8.5 FRESHWATER SYSTEM..............................................................................................................73
8.6 ENGINE AND DRIVE.....................................................................................................................73
9.0 ENVIRONMENTAL ISSUES.................................................................................74
10.0 POSITIONS OF THROUGH HULL AND DECK FITTINGS ................................75
10.1 STARBOARD SIDE .....................................................................................................................75
10.2 PORT SIDE..................................................................................................................................76
10.3 TOP VIEW - HULL BOTTOM.......................................................................................................77
10.4 TOP VIEW - DECK ......................................................................................................................77
11.0 OVERVIEW .........................................................................................................78
ANNEX 1: A CHECKLIST OF ALL NECESSARY ACTIONS BEFORE USE ............80
ANNEX 2: A CHECKLIST OF ALL NECESSARY ACTIONS AFTER THE WINTER
STORAGE...................................................................................................................81

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1.0 GENERAL INTRODUCTION
This manual has been compiled to help you to operate your craft with safety and
pleasure. It is not a course on boating safety or seamanship. If this is your first boat, or
if you are changing to a type of boat you are not familiar with, for your own comfort and
safety, please ensure that you obtain handling and operating experience before
“assuming command” of the boat.
Ensure that the anticipated wind and sea conditions will correspond to the design
category of your boat, and that you and your crew are able to handle the boat in these
conditions. Even when your boat is categorized for them, the sea and wind conditions
corresponding to the design categories A, B and C range from severe storm conditions
for category A, to strong conditions for the top of category C, open to the hazards of a
freak wave or gust. These are therefore dangerous conditions, where only a competent,
fit and trained crew using a well maintained boat can satisfactorily operate.
This owner's manual is not a fully detailed maintenance or trouble-shooting guide. In the
case of difficulty, refer to the boat builder or his representative.
Always use trained and competent people for maintenance, fixing or modifications.
Modifications that may affect the safety characteristics of the boat shall be assessed,
executed and documented by competent people. The boat builder cannot be held
responsible for modifications that have not been approved.
Always maintain your boat properly and make allowance for the deterioration that will
occur in time and as a result of heavy use or misuse of the boat.
Any boat, no matter how strong it may be, can be severely damaged if not used properly.
This is not compatible with safe boating. Always adjust the speed and direction of the
boat to sea conditions.
The boat should have appropriate safety equipment (lifejackets, harness, etc.) on board
according to the type of boat, weather conditions, etc. This equipment is mandatory in
some countries. The crew should be familiar with the use of all safety equipment and
emergency manoeuvring (man overboard recovery, towing, etc.), sailing schools and
clubs regularly organize drill sessions.
All persons should wear a suitable buoyancy aid (life jacket/personal floatation device)
when on deck. Note that, in some countries, it is a legal requirement to wear a buoyancy
aid that complies with their national regulations at all times.
The owner’s manual is written according to the following standard:
EN-ISO-10240:2004.

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Type: Marex 375
Construction category: B
Approval: EC TYPE EXAMINATION BY DET IMSI (INTERNATIONAL
MARINE CERTIFICATION INSTITUTE)
Certificate number:_______________
See copy enclosed in divider number 5.
The boat’s CIN number (Craft Identification Number) is engraved aft of the boat, under
the fender-list, on the starboard side.
Picture 1: The boat’s CIN number location
PLEASE KEEP THIS MANUAL IN A SECURE PLACE, AND HAND IT OVER TO
THE NEW OWNER IF YOU SELL THE BOAT.

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1.1 INSTALLED EQUIPMENT
Divider number 4 contains a list of installed equipment in your boat.
1.2 SYMBOLS USED IN THE OWNER’S MANUAL
DANGER:
The “Danger” warnings in the owner’s manual or in the installed component MUST
be followed to avoid personal injury or serious material damage.
WARNING:
The warnings must be followed to avoid damage on boat or on equipment.
CAUTION:
This should be remembered to avoid damage on persons or equipment.
 DESCRIPTION:
This is the description of location of the equipment or component.
INSTRUCTION MANUAL:
Read the separate instruction manual/user manual for this equipment. This is
placed in the “User bag” enclosed in the boat.

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1.3 CONSTRUCTION CATEGORIES
EU-directive 94/25/EC defines the following construction categories:
A. OCEAN: This craft is designed for extended voyages where conditions may exceed
wind force 8 (Beaufort scale) and significant wave heights of 4 m and above but
excluding abnormal conditions, and vessels largely self-sufficient.
B. OFFSHORE: This craft is designed to operate in winds up to Beaufort force 8
and the associated wave heights (significant wave height up to 4 m). Such
conditions may be encountered on offshore voyages of sufficient length, or on
coastal waters when unsheltered from the wind and waves 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.
C. INSHORE: This craft is designed to operate in winds up to Beaufort force 6 and the
associated wave heights (significant wave height up to 2 m). Such conditions may be
encountered in exposed inland waters, in estuaries, and in coastal waters in moderate
weather conditions.
D. SHELTERED WATERS: This craft is designed for voyages on sheltered coastal
waters, small bays, small lakes, rivers and canals when conditions up to, and including,
wind force 4 and significant wave heights up to, and including, 0,3 m may be
experienced, with occasional waves of 0,5 m maximum height, for example from passing
vessels.
Boats in each category must be designed and constructed to withstand these
parameters in respect of stability, buoyancy, and other relevant essential requirements,
and to have good handling characteristics.
CAUTION:
THE ACTUAL USE OF THE BOAT IS ON OWN RISK. READ ALL THE WARNINGS
IN THE OWNER’S MANUAL.

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1.4 ABOUT THIS OWNER’S MANUAL
✓This owner’s manual is a part of the documentation that follows the boat.
✓Included in the boat is a “user bag”that contains the owner’s manual and
separate instructions.
Picture 2: The user bag
✓This “user bag” is considered a part of the boat and must be included in the boat
for future owners.
✓Marex is continuously developing the quality of its products. This owner’s manual
contains information updated at the time of the print of this book and may
therefore deviate from your boat. Please contact Marex or your local dealer if
questions regarding the owner manual appear.
✓This owner’s manual is adjusted to a standard equipped boat.
✓Many Marex boats are custom made. Equipment that is not of significant
importance to the safety or stability of the boat is not incorporated in this owner’s
manual.

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2.0 TECHNICAL DATA
Part of the information is given on the builder’s plate fixed on the craft. A full
explanation of this information is given in the relevant sections of this manual.
2.1 GENERAL TECHNICAL DATA
Boat type: Marex 375
Construction category: B
2.2 HULL
Type
Measurement
Unit
Length over all, including bowsprit and platform (LOA)
11,99
m
Length of hull (Lh)
11,90
m
Length hull waterline (LWL)
9,68
m*
Transport height without lantern mast and mounted
extra equipment (Transport height excluding the rudder
and propeller)
3.49
m*
Transport height without lantern mast and mounted
extra equipment (Transport height including the rudder,
propeller and propeller protector)
3.83
m
Total height from bottom to top lantern mast, including
flagpole
4.3
m*
Height from the waterline (Sailing height) with lantern
mast, including flagpole
3.71
m*
Height from the waterline (Sailing height) with lantern
mast, excluding flagpole
3.71
m*
Height from the hulls keel to the top of the lantern mast,
including top lantern
4.3
m
Height of the mounted and removable lantern mast
0.81
m
Marex cradle height
0.10
m
Beam excluding fender list BOA
3.45
m
Beam including fender list BOA
3.49
m
Beam of the boat waterline BWL
3.075
m
Displacement of empty boat (twin engine)
7400
kg *
Maximum recommended load**
2400
kg
Maximum allowed displacement***
9800
kg
- m*/ kg* standard boat and weight with twin engine installation (2 x Volvo D4)
- ** Maximum recommended load includes the weight of all persons onboard, all
provisions and personal effects, any equipment not included in the light craft mass,
cargo (if any) and all consumable liquids (water, fuel, etc.).
- *** see section 2.5 Capacities for detailed loading condition.