MARKER ONE m25 User manual

MARKER ONE
Owner’s Manual

We Wish You Safe and Happy Boating!
Your Marker One boat was built to meet or exceed all applicable boat building standards at the time of
manufacture. Your Marker One boat was inspected and certified prior to introduction, and periodic
inspections of this model are conducted in-plant to ensure continued compliance. Marker One is affiliated
with the following organizations for your safety and pleasure.
The American Boat and Yacht Council, Inc. (ABYC) is an independent organization dedicated to developing
and maintaining the highest level of marine equipment safety standards for U.S. boat manufacturers.
Working closely with the U.S. Coast Guard (USCG) and other authorities, the ABYC reviews marine
equipment and systems, including electrical systems, ventilation, steering, flotation, load capacity, fuel
system and others that may have an impact on your safety.
The National Marine Manufacturers Association (NMMA) is an independent organization involved in a wide
range of activities aimed toward the promotion and improvement of all aspects of boating. Members include
manufacturers of boats, engines and marine equipment of all types.
One division of the NMMA provides an inspection and certification program to members. Inspections are
performed to the rigid and detailed standards of the USCG and ABYC. Certification requires compliance with
all applicable standards and recommendations.

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M25/M27 Owner’s Manual
T ABLE OF C ONTENTS
GENERAL INFORMATION
WELCOME................................................................................................. 1-1
CERTIFICATE OF LIMITED WARRANTY................................................. 1-2
INTRODUCTION........................................................................................ 1-4
Intended Use ........................................................................................ 1-4
Craft Design Category.......................................................................... 1-4
OWNER RESPONSIBILITY/WARRANTY PROCEDURE ......................... 1-5
Before Operating .................................................................................. 1-5
Warranty Service Requirements .......................................................... 1-5
If You Sell Your Marker One Boat ........................................................ 1-5
CERTIFICATIONS ..................................................................................... 1-5
NMMA .................................................................................................. 1-5
FEATURES/CONSTRUCTION .................................................................. 1-6
Amenities.............................................................................................. 1-6
Construction Standards/Certifications .................................................. 1-6
Serial Number Locations ...................................................................... 1-6
WARNING LABELS ................................................................................... 1-7
PUBLICATIONS......................................................................................... 1-9
NAUTICAL TERMS.................................................................................... 1-9
SYMBOLS................................................................................................ 1-12
SPECIFICATIONS ................................................................................... 1-13
LAYOUT (M-SERIES) .............................................................................. 1-14
PROPELLER APPLICATION CHART ..................................................... 1-15
M25 .................................................................................................... 1-15
M27 .................................................................................................... 1-15
ALPHABETICAL INDEX .......................................................................... 1-16

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MARKER ONE PLATFORM SERIES
RESPONSIBILITIES AND SAFETY
OWNER/OPERATOR RESPONSIBILITIES .............................................. 2-1
Registration/Documentation................................................................. 2-1
Required Safety Equipment ................................................................. 2-2
Recommended Safety Equipment ....................................................... 2-2
Recommended Spare Parts................................................................. 2-3
Education Opportunities....................................................................... 2-3
Insurance ............................................................................................. 2-3
BOAT THEORY ......................................................................................... 2-3
Remote Control System ....................................................................... 2-3
Steering System ................................................................................... 2-3
Fuel System ......................................................................................... 2-3
Freshwater System (Optional) ............................................................. 2-3
DC Electrical System ........................................................................... 2-4
Seaworthiness Inspection .................................................................... 2-4
Operation Checklist.............................................................................. 2-4
Environmental Considerations ............................................................. 2-4
Components, Maintenance and Repairs.............................................. 2-6
Emergency Considerations .................................................................. 2-6
Lifesaving Equipment........................................................................... 2-8
SAFETY ................................................................................................... 2-10
Signal Words/Definitions .................................................................... 2-10
General Safety ................................................................................... 2-11
Water Sports Safety ........................................................................... 2-15
Safety Alert From August 28, 2001: ................................................... 2-17
Navigation ......................................................................................... 2-17
Aids to Navigation .............................................................................. 2-19
OPERATING INFORMATION
PRECAUTIONS ......................................................................................... 3-1
Before You Start................................................................................... 3-1
Fire/Explosion ...................................................................................... 3-1
FIRST-TIME OPERATION......................................................................... 3-1
FUEL .......................................................................................................... 3-2
Fuel Requirements............................................................................... 3-2
Fueling ................................................................................................. 3-2
LAUNCHING .............................................................................................. 3-5
Launching Checklist ............................................................................. 3-5
On the Water........................................................................................ 3-5
Boarding............................................................................................... 3-5
Loading ................................................................................................ 3-5
Shipshape ............................................................................................ 3-5

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T ABLE OF C ONTENTS
GETTING UNDERWAY ............................................................................. 3-6
Before Starting Checklist...................................................................... 3-6
Handling Dock and Mooring Lines ....................................................... 3-6
Starting/Shifting/Steering/Stopping ...................................................... 3-7
Basic Maneuvering............................................................................. 3-12
Environmental Considerations ........................................................... 3-16
Entertainment System ........................................................................ 3-17
HELM AND INSTRUMENTATION ........................................................... 3-18
STANDARD AND OPTIONAL EQUIPMENT ........................................... 3-21
EXTENDED SWIM LADDER ................................................................... 3-24
FLIP-DOWN SWIM STEP - OPTIONAL .................................................. 3-24
COCKPIT DINETTE TABLE - OPTIONAL ............................................... 3-25
ANCHOR LIGHT ...................................................................................... 3-25
WATER SYSTEM .................................................................................... 3-25
TRANSOM SHOWER .............................................................................. 3-26
BIMINI TOP - OPTIONAL ........................................................................ 3-27
ARCH - OPTIONAL.................................................................................. 3-27
TIE-DOWN LOCATIONS ......................................................................... 3-27
TOOL KIT - OPTIONAL ........................................................................... 3-28
STANDARD HEAD OR OPTIONAL PUMP-OUT HEAD.......................... 3-28
Porta Potti........................................................................................... 3-28
SKI TOW - OPTIONAL............................................................................. 3-28
SYSTEMS
INTRODUCTION........................................................................................ 4-1
FUEL AND WATER/PLUMBING ROUTING .............................................. 4-2
Water System....................................................................................... 4-3
FIRE EXTINGUISHER ............................................................................... 4-3
ELECTRICAL SYSTEM ............................................................................. 4-3
BATTERY BOARD..................................................................................... 4-3
BATTERY SWITCH ................................................................................... 4-4
AUTOMATIC CHARGING RELAY (ACR) .................................................. 4-4
BATTERY CHARGER - OPTIONAL .......................................................... 4-4
BREAKER PANEL ..................................................................................... 4-5
BATTERY CONNECTIONS ....................................................................... 4-5
INTERIOR/EXTERIOR CARE
VINYL INTERIOR AND UPHOLSTERY..................................................... 5-1
Care and Cleaning of Vinyl................................................................... 5-1
SEA GRASS FLOOR COVERING CLEANING INSTRUCTIONS.............. 5-2
General Maintenance Instructions........................................................ 5-2
Maintenance Techniques ..................................................................... 5-2
Spot and Stain Removal....................................................................... 5-4

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MARKER ONE PLATFORM SERIES
CABINETRY AND WOOD ......................................................................... 5-5
Cabinetry.............................................................................................. 5-5
Woodgrain Dash .................................................................................. 5-5
Teak Dinette Table............................................................................... 5-5
CARPET..................................................................................................... 5-5
WOODGRAIN HULL PANELS................................................................... 5-5
DECK AND SIDE WALLS .......................................................................... 5-5
ALUMINUM HULLS ................................................................................... 5-5
Cleaning Deck and Hull........................................................................ 5-6
Deck and Hull Care .............................................................................. 5-6
STAINLESS STEEL AND CHROME ......................................................... 5-6
Preventive Steps .................................................................................. 5-6
Cleaning Stainless Steel ...................................................................... 5-6
CORROSION PROTECTION .................................................................... 5-7
Galvanic Corrosion............................................................................... 5-7
Salt Water ............................................................................................ 5-7
CANVAS .................................................................................................... 5-7
Cleaning Canvas.................................................................................. 5-8
Special Cleaning Problems .................................................................. 5-8
Zippers ................................................................................................. 5-8
Snap Fasteners.................................................................................... 5-8
WINDSHIELD............................................................................................. 5-8
STORAGE AREA....................................................................................... 5-8
MAINTENANCE AND TROUBLESHOOTING
SCHEDULED MAINTENANCE AND SERVICE ........................................ 6-1
Maintenance Schedule......................................................................... 6-1
Break-In................................................................................................ 6-1
Before Each Use .................................................................................. 6-1
Every 50 Hours .................................................................................... 6-2
Every 100 Hours .................................................................................. 6-2
Quarterly .............................................................................................. 6-2
UNSCHEDULED MAINTENANCE............................................................. 6-2
Outboard .............................................................................................. 6-2
Electrical System.................................................................................. 6-2
Fuel System ......................................................................................... 6-2
Freshwater System (if equipped) ......................................................... 6-3
LIFTING THE BOAT .................................................................................. 6-3
Boat Support Recommendations (for Trailering, Storage and Lifts) .... 6-3
Lifting Procedure .................................................................................. 6-3
Storage Cradle ..................................................................................... 6-4
STORAGE/WINTERIZATION .................................................................... 6-4
Reactivating the Boat After Storage..................................................... 6-5

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T ABLE OF C ONTENTS
TROUBLESHOOTING ............................................................................... 6-5
Engine .................................................................................................. 6-5
Electrical............................................................................................... 6-6
Plumbing .............................................................................................. 6-6
REFERENCE AND FORMS
OPERATION QUICK REFERENCE .......................................................... 7-1
Before Launching ................................................................................. 7-1
Pre-Operation....................................................................................... 7-1
Starting Engine..................................................................................... 7-2
Casting Off ........................................................................................... 7-2
During Operation .................................................................................. 7-2
Returning to Port .................................................................................. 7-2
Stopping the Engine ............................................................................. 7-2
After Boating......................................................................................... 7-2
SERVICE LOG ........................................................................................... 7-3
FUEL LOG ................................................................................................. 7-4
FLOAT PLAN ............................................................................................. 7-5
BOAT INFORMATION ............................................................................... 7-6
WARRANTY TRANSFER FORM............................................................... 7-7

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NOTES

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M25/M27 Owner’s Manual
S ECTION 1
G ENERAL
I NFORMATION
WELCOME
Dear New Marker One Owner,
From all of us at the factory and from your authorized Marker One dealer, thank
you for purchasing a Marker One boat. We greatly appreciate your business and
look forward to a long and enjoyable relationship with you as part of the Marker
One family.
This manual is designed to help you maximize the enjoyment of your Marker One
boat, and to acquaint you with proper operation, care, storage and maintenance
of your investment.
Even if you’re a seasoned boater and have previously owned a Marker One boat,
I recommend you take time to read through this Owner’s manual. As you read
this manual, please remember that “common sense” and “courtesy” are the
most valuable traits you can have to fully enjoy safe boating. It is also to your
personal advantage to become well acquainted with the rules and general “know
how” of boating.
For service and for assistance, contact your authorized Marker One dealer. The
dealership staff will be happy to answer questions concerning maintenance,
warranty or any other operational questions you may have about your Marker
One boat.
All the best in boating,
Pack St. Clair, Chairman and C.E.O.

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M25/M27 Owner’s Manual
CERTIFICATE OF LIMITED WARRANTY
Subject to the terms and conditions in this warranty, Marker One, a division of Cobalt Boats, LLC, a
Delaware limited liability corporation (“Marker One”), warrants to the original retail purchaser (and any
subsequent owner) of a new Marker One purchased from an authorized Marker One dealer for personal,
non-racing and non-commercial use (“Owner”), as follows:
Five (5) Year Limited Transferable Warranty on Aluminum Hull. Marker One warrants the aluminum hull
structure, fiberglass deck and side walls of a new Marker One to be free from structural defects in material
and workmanship under normal, non-racing and non-commercial use for a period of (5) years from the date
of delivery to the original retail purchaser.
Three (3) Year Limited Transferable Warranty on Gelcoat Finish, Upholstery, Canvas, Components
Not Separately Warranted by the Manufacturer and All Components Manufactured by Marker One
Other Than the Aluminum Hull. Marker One warrants that the gelcoat finish, upholstery, canvas,
components not separately warranted by the manufacturers thereof and all components manufactured by
Marker One with respect to a new Marker One are free from structural defects in material and workmanship
under normal, non-racing and non-commercial use for a period of three (3) years from the date of delivery of
such Marker One to the original retail purchaser. Because local area operating conditions and customer care
have an effect on gelcoat finishes, the gelcoat finish warranty does not include damage or deterioration (i.e.:
fading, oxidation, discoloration) due to in-water storage or improper care of the gelcoat surface;
THERE ARE NO EXPRESS WARRANTIES OTHER THAN THE ABOVE LIMITED EXPRESS
WARRANTIES. IN THE EVENT ANY LAW DOES NOT PERMIT THE DISCLAIMER OF ANY IMPLIED
WARRANTY, THEN IN NO EVENT SHALL ANY IMPLIED WARRANTIES, INCLUDING ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE, EXTEND
BEYOND THE DURATION OF THESE EXPRESS WRITTEN WARRANTIES.
Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not
apply to you.
Exclusions. The above described limited warranties do not apply if such Marker One has been used at any
time commercially, industrially, for racing or other competition or for revenue producing purposes, and also
do not apply to: (1) outboards, propellers, controls, batteries, or other equipment or accessories which are
separately warranted by the manufacturers thereof; (2) outboards, propellers, controls, trailers, equipment or
accessories installed by persons or parties other than Marker One or an authorized Marker One dealer; (3)
rainwater leakage, windscreen damage or breakage; (4) deterioration or damage, fading or shrinkage of
upholstery, carpet or canvas; (5) damage related to the alteration or modification of such Marker One with
any structurally affecting addition, component or accessory not specifically in accordance with Marker One’s
specifications or offered as an option by Marker One; (6) damage, deterioration (i.e.: fading, oxidation,
corrosion) of surface finishes, vinyls, fabrics, aluminum and stainless steel finishes; (7) damage or failures
caused by operation of the Marker One outside of the maximum horsepower specifications recommended
by Marker One; (8) damage or failure related to repairs made by any service provider not approved by
Marker One; (9) damage (i.e.: scratches, fading, oxidation, discoloration) to the gelcoat finish; 10) damage or
failure related to alteration, modification, misuse, neglect, negligence, accident or failure to provide
reasonable care and maintenance of such Marker One.

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Remedies. During the applicable limited warranty period, as set forth above, covered warranty repairs shall
be made without charge by an authorized Marker One dealer or, at the option of Marker One, by Marker One
at its plant in Neodesha, Kansas or at a facility specifically authorized by Marker One. All warranty repairs
shall be subject to the authorization of factory trained personnel of Marker One, whose decision shall be
final. Transportation to and from an authorized Marker One dealer, and/or to and from the Marker One plant
in Neodesha, Kansas, for warranty repairs, shall be at Owner’s expense. The rights and benefits granted
under the above described limited warranty extend to (1) the original retail purchaser of a new Marker One,
and (2) any owner of such Marker One during the applicable warranty period, commencing with the date of
delivery of such Marker One to the original retail purchaser provided that such limited warranty is validated
by such subsequent owner, as set forth herein.
MARKER ONE’S ONLY RESPONSIBILITY, AND THE
OWNER’S ONLY REMEDY, IS REPAIR AS DESCRIBED IN THIS WARRANTY. MARKER ONE SHALL
NOT BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT OR SPECIAL DAMAGES.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above
exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other
legal rights which vary from state to state.
How to obtain Warranty Service. To validate the above described limited warranty, (1) the original retail
purchaser or authorized Marker One dealer must register the new owner online with Marker One at 1715 N.
8th Street, Neodesha, KS 66757, within ten (10) days after purchase of any new Marker One covered by
such limited warranty, and (2) any subsequent owner of a Marker One during the applicable limited warranty
period must give written notice of the acquisition of a Marker One to Marker One within ten (10) days after
such purchase. Notification of any warranty claim arising within the applicable warranty period, as set forth
above, must be made in writing by the owner of such Marker One or by an authorized Marker One dealer to
Marker One within thirty (30) days after the discovery of the alleged basis for any warranty claim. All
warranties are transferable.

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M25/M27 Owner’s Manual
INTRODUCTION
This manual was created following International
Organization for Standards (ISO) 10240:2004 as a
guideline. Not all information to conform to the
standards set forth by ISO can be included in this
manual without certain manufacturer’s consent of
the equipment included on your boat.
This owner’s manual contains information that is
necessary to run the boat properly, safety topics,
and operation and maintenance hints.
Even if everything has been planned and designed
for the safety of the boat and its users, boating is
highly dependent on the weather conditions, the
sea state, and the experience and physical shape
of the crew, and one can never ensure full safety. It
is your responsibility as the owner or user to know
the boat’s equipment, its capabilities and the boat’s
intended use.
The specific information on the operation of the
equipment and systems your boat is supplied with
or fitted with should be supplied by that
manufacturer. Read, understand and keep all the
information supplied, and familiarize yourself and
all users with the boat before you put it into use.
All persons should wear a suitable life
preserver/personal flotation device when on deck.
In some countries it is a legal requirement to wear a
suitable life preserver/personal flotation device that
complies with those countries’ regulations at all
times.
Intended Use
Your Marker One boat is intended for use as a
pleasure and sport craft.
Craft Design Category
Significant Wave Height – is the mean height of the
highest one-third of the waves, which
approximately corresponds to the wave height
estimated by an experienced observer. Some
waves will be double this height.
OCEAN – Category A
Craft designed to operate in winds that may exceed
wind Beaufort force 8 and in significant wave
heights of 13' 1.44" (4 m) and above, and 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.
AWARNING
Avoid serious injury or death.
• Children, disabled people and
non-swimmers should wear a personal
flotation device at all times. Children
and non-swimmers need special
instruction in the use of life
preservers. Inform all passengers on
the proper use of personal flotation
devices and of the location of safety
equipment, man overboard recovery
equipment, and the location and
deployment of the ladder.
• Avoid contact with any running
machinery moving parts, such as an
engine, generator or propeller. Contact
can result in loss of body parts,
strangulation, burns and/or severe
loss of blood. Keep all machinery
guards in place when machinery is
operating.

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OFFSHORE – Category B
Craft designed to operate in winds up to Beaufort
force 8 and the associated wave heights and in
significant wave heights up to 13' 1.44" (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.
INSHORE – Category C
Craft designed to operate in winds up to Beaufort
force 6 and the associated wave heights and
significant wave heights up to 6' 6.7" (2 m). Such
conditions may be encountered in exposed inland
waters, in estuaries and in coastal waters in
moderate weather conditions.
SHELTERED WATERS – Category D
Craft designed to operate in winds up to Beaufort
force 4 and the associated wave heights
(occasional maximum waves of 1' 7.7" [0.5 m]
height). Such conditions may be encountered in
sheltered inland waters, and in coastal waters in
fine weather.
OWNER RESPONSIBILITY/
WARRANTY PROCEDURE
Before Operating
Before operating your new Marker One boat, it is
necessary that you read and understand this
manual. Also, take the time to read the other
component manuals supplied to you in your
owner’s packet.
Warranty Service Requirements
All Marker One warranty service must be
completed by an authorized Marker One dealer. If
you are not able to return your boat to your selling
dealership, you must contact him so he may assist
you in coordinating the warranty repairs. Any claims
against Marker One Boats without prior approval
from Marker One Boats on repairs completed by an
unauthorized dealership may be denied.
If You Sell Your Marker One Boat
Your warranty is transferable. If you sell your Marker
One boat to anyone other than an authorized
Marker One dealer, please refer to the Warranty
Transfer Form on the last page of this manual. If the
proper transfer procedure is not followed, future
warranty may be denied.
CERTIFICATIONS
NMMA
Marker One Boats is a member of the National
Marine Manufacturers Association (NMMA). This
independent organization’s members include boat,
engine and marine equipment manufacturers that
are focused on the improvement and safety of
boating.
Your new Marker One boat is NMMA certified. An
NMMA certification not only satisfies the U.S. Coast
Guard (USCG) regulations but also the more
rigorous equipment and system standards based
on those established by the American Boat and
Yacht Council, Inc. (ABYC).Your Marker One boat
meets or exceeds NMMA safety-based
certifications.

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M25/M27 Owner’s Manual
FEATURES/CONSTRUCTION
Amenities
Your Marker One boat incorporates classic styling
with the long, clean lines that have defined Marker
One design for over 40 years.
Construction Standards/Certifications
A Warranty Statement explaining terms and
conditions is supplied in this section. Please
familiarize yourself with this statement. Failure to
follow operating instructions and proper
maintenance can void the warranty.
Construction Standards detailing industry
standards followed in building your Marker One
boat are explained in this section. Please contact
your authorized Marker One dealer for additional
construction information.
Serial Number Locations
Your Marker One boat, its engine and other
equipment onboard will have a serial number for
identification. It is a good practice to prepare a list
of all serial number items and store it in a safe
place other than onboard the boat. A page is
supplied at the end of this manual for this purpose.
Please refer to the equipment operator’s manuals
supplied in your owner’s packet for location of serial
numbers.

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WARNING LABELS
The warning labels on your Marker One boat must
remain legible. If a label is damaged or you suspect
a label is missing, contact your authorized Marker
One dealer for immediate replacement.
There are several labels used to point out hazards.
All of these labels shown may not be included on
your boat. The general location of the labels is as
follows:
Hydraulic Swim Step
Helm (U.S. Only)
COB_0421_A
COBALT BOATS “MEET U.S. EPA EVAP
STANDARDS USING CERTIFIED COMPONENTS”
ROTATING PROPELLER MAY CAUSE
SERIOUS INJURY OR DEATH.
SHUT OFF ENGINE WHEN
NEAR PERSONS IN THE WATER.
NW-207-14
Transom of Boat and Below the Helm
AVOID PERSONAL INJURY
DO NOT OCCUPY THIS AREA
OR AFT FACING SEATS
WHEN BOAT IS UNDERWAY
Walk-Through Area
BATTERY SWITCH OPERATIONS:
NORMAL BOATING PLACE IN
“ON” POSITION.
EMERGENCY START ONLY:
PLACE IN “COMBINE BATTERIES”
POSITION. RETURN TO “ON”
POSITION AFTER STARTING.
AVOID PERSONAL INJURY
STAY INSIDE DECK RAILS AND GATES
WHEN BOAT IS UNDERWAY
taoBfomosnarT
taoBfokcaBdnatnorFnogniliaR
AVOID DAMAGE OR INJURY. DO NOT EXCEED
TOW POINT MAXIMUM LOAD OF 1000 POUNDS.
Transom of Boat
Rear Walkway Starboard Side
Bow Starboard Side
Port Side Seat

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M25/M27 Owner’s Manual
Helm Seat Wall
Below the Helm
Transom
Transom Port Side
Below the Helm
Helm Seat Wall
COB_0423_A
Port Side
Transom Ladder
Arch

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PUBLICATIONS
Your owner’s packet includes information about
onboard systems and equipment furnished by
suppliers other than Marker One Boats. Please
refer to these manufacturer’s manuals for additional
operation and maintenance instructions not
covered in this manual.
NAUTICAL TERMS
ABOARD – On or in the boat.
ABYC – American Boat and Yacht Council, Inc.
AFLOAT – On the water.
AFT – Toward the rear or stern of the boat.
AGROUND – Touching bottom.
AMIDSHIP – Center or middle of the boat.
ANCHOR – (1) An iron casting shaped to grip the
lake bottom to hold the boat. (2) The act of setting
the anchor.
ASHORE – On the shore.
ASTERN – Toward the stern.
BAIL – To remove water from the bottom of the
boat with a pump, bucket, sponge, etc.
BEAM – The widest point on the boat.
BEARING – Relative position or direction of an
object from the boat.
BILGE – The lowest interior section of the boat hull.
BOARDING – To enter the boat.
BOUNDARY WATERS – A body of water between
two areas of jurisdiction; i.e., a river between two
states.
BOW – The front of the boat.
BULKHEAD – Vertical partition (wall) in a boat.
BUNKS – Carpeted trailer hull supports.
BURDENED BOAT – Term for the boat that must
“give-way” to boats with the right-of-way.
CAPACITY PLATE – A plate that provides
maximum weight capacity and engine horsepower
rating information. It is located in full view of the
helm.
CAPSIZE – To turn over.
CAST-OFF – To unfasten mooring lines in
preparation for departure.
CENTER LINE – A lengthwise imaginary line which
runs fore and aft with the boat’s keel.
CHINE – The point on a boat where the side
intersects (meets) the bottom.
CLEAT – A deck fitting with ears to which lines are
fastened.
CONSOLE – Also called helm. The steering wheel
area of the boat.
CRANKING BATTERY – The main battery used for
engine starting and electrical circuits.
CURRENT – Water moving in a horizontal
direction.
DECK – The open surface on the boat where the
passengers walk.
DEEP CYCLE BATTERIES – Special long-running
batteries which can be repeatedly discharged and
recharged without significant loss of power.
DOLLY WHEEL – A rolling jack assembly at the
front of the trailer used for positioning the coupler
during trailer hookup.
DRAFT – The depth of the boat below the water
line, measured vertically to the lowest part of the
hull.
ELECTROLYSIS – The break-up of metals due to
the effects of galvanic corrosion.
EPIRB – Emergency Position Indicating Radio
Beacon.
FATHOM – Unit of depth or measure; 1 fathom
equals 6 feet.
FENDERS – Objects placed alongside the boat for
cushioning. Sometimes called bumpers.

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MARKER ONE PLATFORM SERIES S ECTION 1
1-10
M25/M27 Owner’s Manual
FORE – Toward the front or bow of the boat.
Opposite of aft.
FREEBOARD – The distance from the water to the
gunwale.
FUEL SENDING UNIT – The electrical device that
is mounted on the outside of a built-in fuel tank and
controls the dashboard fuel gauge.
GIVE-WAY BOAT – (1) Term for the boat that must
take whatever action necessary to keep well clear
of the boat with the right-of-way in meeting or
crossing situations. (2) The burdened boat.
GUNWALE – The rail or upper edge of a boat’s
side.
HEAD – A marine toilet.
HELM – The steering wheel or command area.
HULL – The body of the boat.
HYPOTHERMIA – A physical condition where the
body loses heat faster than it can produce it.
IN-LINE FUSE – A type of protective fuse located
in the power wire of a direct current (DC) circuit
usually near the battery.
KEEL – The lowest portion of the boat; extends
fore and aft along the boat’s bottom.
LIST – Leaning or tilt of a boat toward the side.
LOA – Length overall.
MAKING WAY – Making progress through the
water.
MARINE CHART – Seagoing maps showing
depths, buoys, navigation aids, etc.
MOORING – An anchor, chain, or similar device
that holds a boat in one location.
NAVIGATION AID – Recognizable objects on land
or sea such as buoys, towers or lights which are
used to fix position to identify safe and unsafe
waters.
NMMA – National Marine Manufacturers
Association.
NO-WAKE SPEED – The speed at which a boat
travels to produce an imperceptible wake.
PFD – Personal flotation device.
PITOT TUBE – See SPEEDOMETER PICKUP
TUBE.
PLANING HULL – A hull designed to lift, thereby
reducing friction and increasing efficiency.
PORPOISE – A condition in which the bow
bounces up and down caused by trimming the
engine too far out.
PORT – (1) The left side of a boat when facing the
bow. (2) A destination or harbor.
PRIVILEGED BOAT – Term used for the boat with
the right-of-way.
RIGHT-OF-WAY – Term for the boat that has
priority in meeting or crossing situations. The stand
on or privileged boat.
RULES OF THE ROAD – Regulations for
preventing collisions on the water.
SPEEDOMETER PICKUP TUBE – Also called
pitot tube. The plastic device that extends below the
bottom of the boat. It connects to the speedometer
with plastic flexible tubing.
STAND ON BOAT – Term for the boat that must
maintain course and speed in meeting or crossing
situations. The privileged boat.
STARBOARD – The right side of the boat when
looking toward the bow.
STERN – The back of the boat.
STOW – To pack the cargo.
SURGE BRAKES – A type of trailer braking system
designed to automatically actuate when the tow
vehicle’s brakes are applied.
TRANSDUCER – The unit that sends/receives
signals for the depth sounder.
TRANSOM – The transverse beam across the
stern.
TRIM – Fore to aft and side to side balance of the
boat when loaded.

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G ENERAL I NFORMATION
M25/M27 Owner’s Manual
1-11
UNDERWAY – Boat in motion, i.e., not moored or
anchored.
USCG – United States Coast Guard.
VISUAL DISTRESS SIGNAL – A device used to
signal the need for assistance such as flags, lights
and flares.
WAKE – The waves that a boat leaves behind
when moving through the water.
WATERWAY – A navigable body of water.
WINDLASS – An electric winch to raise the anchor.

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MARKER ONE PLATFORM SERIES S ECTION 1
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M25/M27 Owner’s Manual
SYMBOLS
STOP
Light Filter Sling Point Compass Anchor
Lights
Blower Boat
Boat
Profile
Bow
Tr i m
Do Not
Use Water
Draft Engine
Caution
Engine
Hour Meter
Engine
Key
Engine
Stop
Engine Fuel
Tank
Grease Height
Above Water
Holding
Tank
Horn
Ignition
Switch
Overall
Length
Lift
Point
Light Navigation
Lights
Oil Tank
Tr i m
Tabs
Water
Tank
Windshield
Wipers
Safety Alert
Symbol COB_0030_A