Sleipner VECTOR FINS VF1050 User manual

SLEIPNER MOTOR AS
P.O. Box 519
N-1612 Fredrikstad
Norway
www.sleipnergroup.com
DOCUMENT ID:
REVISION:
DATE:
LANGUAGE:
Installation Guide
For Vector Fin Stabiliser Systems
STABILISER 67B, 94B, 97B
VECTOR FINS VF1050, VF1350, VF1650,
VF1950
EN
I M
6463
2
2022

26463 22022
-
SPS-B
Sleipner Motor AS
P.O. Box 519, Arne Svendsensgt. 6-8
N-1612 Fredrikstad, Norway
MC_0020
Contents
MC_0203
For stabiliser systems
Reducing the roll of the boat, and how effi ciently fi ns achieve this will depend on several factors.
• First, the size of the fi ns compared to the boats “stabilizing requirements”.
• Fin positioning on the hull which in turn decides the angle they work.
• Leverage arm length around the vessel centre of gravity.
The bigger the stabilizer fi ns, the more boat roll is reduced. There are limitations to the size of fi n stabilizers you can install depending on the size of
the boat. Limitations are typically decided by:
• space requirements compared to available space in the boat,
• Added drag and potential speed loss
The typical/ default size recommendation is calculated based on the provided data to reduce the roll at your chosen “minimum stabilizing speed” of
approximately 5 degrees. (NB: that this is not a guaranteed fi gure as there many factors that could affect performance at varying speeds.)
The “AnySpeed”, “zero speed” or “at anchor” stabilization, is by default calculated to reduce the roll by approximately 4 degrees.
Please follow this general guide for steps to prepare and plan your installation process:
• Find the best possible position of the fi ns based on the information provided in the sections about:
• Safety and General precautions Measurements.
• Please note the very flexible installation methods possible including off-set angle installation.
• Possible with Sleipner stabilizers as this might enable installation in positions more suited and effi cient than possible with some other brands or
types of fi n stabilizers.
• Fin positioning
• Hull forces
• Ensure that it is space to do the reinforcement of the hull if necessary
Plan the installation of the hydraulic parts including hose/pipe runs based on the information provided in the sections:
• Basic hydraulic installation
• AC power pack
• Noise considerations
• Relevant hydraulic diagram with hose specifi cations for your particular system
Plan the installation of the electrical parts including the control panel and wiring runs based on the information in the sections:
• Power supply
• S-link wiring
• Control panel installation
Your Sleipner representative will be able to help make an educated decision for what is the best solution for your boat and your preferences. Before
starting the installation the Sleipner representative can ensure that you are not installing parts and products that will not meet your expectations.
The installer must read this document to ensure necessary familiarity with the product before installation.
Instructions in this document cannot be guaranteed to comply with all international and national regulations. It is the responsibility of the
installer to follow all applicable international and national regulations when installing Sleipner products.
The recommendations given in this document are guidelines ONLY, and Sleipner strongly recommends that advice is obtained from a person
familiar with the particular vessel and applicable regulations.
This document contains general installation instructions intended to support experienced installers. If you are not skilled in this type of work,
please contact professional installers for assistance.
If required by local regulation, electrical work must be done by a licensed professional.
Appropriate health and safety procedures must be followed during installation.
Faulty installation of Sleipner products will render all warranties given by Sleipner Motor AS.
MC_0038
Responsibility of the Installer
Failure to follow the considerations and precautions can cause serious injury,
damage and will render all warranties given by Sleipner Motor as VOID.
MC_0411
MC_0440
General Installation Considerations and Precautions Guidelines
Installation Manual
Responsibility of the Installer................................................................................................................................................................... 3
General Installation Considerations and Precautions Guidelines ......................................................................................................3 - 4
Addition Supporting Manuals.................................................................................................................................................................. 5
Key Components.................................................................................................................................................................................... 6
Actuator Measurements ......................................................................................................................................................................... 7
Vector Fin Measurements....................................................................................................................................................................... 8
Measurement Clearance ........................................................................................................................................................................ 9
Hull Forces ........................................................................................................................................................................................... 10
Fin Positioning............................................................................................................................................................................... 11 - 13
Fin Modication Tunnel ends................................................................................................................................................................ 14
Mechanical Installation ................................................................................................................................................................. 15 - 19
Hydraulic Installation ..................................................................................................................................................................... 20 - 27
Electrical Installation...................................................................................................................................................................... 28 - 35
S-Link System Description ................................................................................................................................................................... 36
Electrical Installation...................................................................................................................................................................... 37 - 41
Fin Installation ............................................................................................................................................................................... 42 - 49
Fin Location Label ................................................................................................................................................................................ 50
Fin System Interface...................................................................................................................................................................... 51 - 52
Start-Up ......................................................................................................................................................................................... 53 - 59
Sea Trial ........................................................................................................................................................................................ 60 - 61
Fin Removal ......................................................................................................................................................................................... 62
Installation Checklist...................................................................................................................................................................... 63 - 64
Service and Support........................................................................................................................................................................... 65
Product Spare Parts and Additional Resources.............................................................................................................................. 65
Warranty Statement............................................................................................................................................................................ 65

3
6463 22022
-
SPS-B
MC_0203
For stabiliser systems
Reducing the roll of the boat, and how effi ciently fi ns achieve this will depend on several factors.
• First, the size of the fi ns compared to the boats “stabilizing requirements”.
• Fin positioning on the hull which in turn decides the angle they work.
• Leverage arm length around the vessel centre of gravity.
The bigger the stabilizer fi ns, the more boat roll is reduced. There are limitations to the size of fi n stabilizers you can install depending on the size of
the boat. Limitations are typically decided by:
• space requirements compared to available space in the boat,
• Added drag and potential speed loss
The typical/ default size recommendation is calculated based on the provided data to reduce the roll at your chosen “minimum stabilizing speed” of
approximately 5 degrees. (NB: that this is not a guaranteed fi gure as there many factors that could affect performance at varying speeds.)
The “AnySpeed”, “zero speed” or “at anchor” stabilization, is by default calculated to reduce the roll by approximately 4 degrees.
Please follow this general guide for steps to prepare and plan your installation process:
• Find the best possible position of the fi ns based on the information provided in the sections about:
• Safety and General precautions Measurements.
• Please note the very flexible installation methods possible including off-set angle installation.
• Possible with Sleipner stabilizers as this might enable installation in positions more suited and effi cient than possible with some other brands or
types of fi n stabilizers.
• Fin positioning
• Hull forces
• Ensure that it is space to do the reinforcement of the hull if necessary
Plan the installation of the hydraulic parts including hose/pipe runs based on the information provided in the sections:
• Basic hydraulic installation
• AC power pack
• Noise considerations
• Relevant hydraulic diagram with hose specifi cations for your particular system
Plan the installation of the electrical parts including the control panel and wiring runs based on the information in the sections:
• Power supply
• S-link wiring
• Control panel installation
Your Sleipner representative will be able to help make an educated decision for what is the best solution for your boat and your preferences. Before
starting the installation the Sleipner representative can ensure that you are not installing parts and products that will not meet your expectations.
The installer must read this document to ensure necessary familiarity with the product before installation.
Instructions in this document cannot be guaranteed to comply with all international and national regulations. It is the responsibility of the
installer to follow all applicable international and national regulations when installing Sleipner products.
The recommendations given in this document are guidelines ONLY, and Sleipner strongly recommends that advice is obtained from a person
familiar with the particular vessel and applicable regulations.
This document contains general installation instructions intended to support experienced installers. If you are not skilled in this type of work,
please contact professional installers for assistance.
If required by local regulation, electrical work must be done by a licensed professional.
Appropriate health and safety procedures must be followed during installation.
Faulty installation of Sleipner products will render all warranties given by Sleipner Motor AS.
MC_0038
Responsibility of the Installer
Failure to follow the considerations and precautions can cause serious injury,
damage and will render all warranties given by Sleipner Motor as VOID.
MC_0411
MC_0440
General Installation Considerations and Precautions Guidelines

46463 22022
-
SPS-B
Addition Supporting Manuals
Follow the addition of supporting manuals to aid in the installation process of this product.
MC_0308
Hydraulic Systems
Installation Guide
MC_0302
MC_0302
For stabiliser systems
Sleipner Motor AS is a manufacturing company of marine equipment and not a Naval Architectural company & therefore take no responsibility in
regards to the installation of our products onto seagoing vessels. This includes any requirement for the vessels:
• hull reinforcement.
• Change in the vessel’s stability.
• Dynamic performance.
• Weight and moment.
• Noise proofi ng.
• Watertight integrity after installation during normal operations or in the event of a collision.
It is the responsibility of the installer/boat builder to determine hull reinforcement requirements, ensuring that suffi cient strengthening measures
are in place & the vessel’s hull will withstand & maintain watertight integrity in the event of a collision of our product, impacting an object when the
vessel is underway.
For special yacht design stabilisers
Provide servicing access hatches to stabilizer actuator assemblies for the removal & installation of Stabilizer fi n shafts if & when required.
When the Stabilizer System ‘At Anchor’ function (optional) is installed, position and soundproof the hydraulic power pack (AC generator & pump), the
actuator assembly compartments and hydraulic hoses, to ensure excess noise will not disturb sleeping passengers.
Ensure provisions to maintain the yachts watertight integrity in the event of a fi n collision.
The stabilizer product includes heavy parts. Ensure suitable lifting and support equipment is available during installation & removal to prevent
material damage or personnel injury.
During yacht lifting operations:
• Ensure the stabilizer fi ns are in the locked/neutral position.
• Lifting personnel are informed that stabilizer fi ns are installed preventing the danger of snagging the lifting slings & damage to the yacht, its
equipment or injury to personnel.
Yacht transportation overland with road vehicles may require the removal of the stabilizer fi ns & shafts. Please contact Sleipner representatives for
instruction procedures.
Do not remove the equipment orifi ce protection blanks or covers until ready for use, preventing the ingress of undesired contamination.
(NB: Hydraulic operated equipment must be clean and debris free at all times.)
Avoid applying anti-corrosion protection lubricants to the hydraulic actuator cylinder rods as this can attract dirt and debris causing oil leaks due to
damaged seals. On completion of the installation and yacht launch thoroughly check for leakages & the yachts hull watertight integrity is maintained.
IMPORTANT
The installer must use the Hydraulic system manual and specifi c system manual as a supplement to ensure necessary knowledge to
complete the installation.
WARNING
Ensure electrical & hydraulic power is switched off before any servicing work is carried out on the stabilizer system.
With power, the Stabilizer systems with ‘at anchor’ function installed & ‘Auto’ selected can suddenly operate & move without
warning.
Hydraulic equipment (including Nitrogen pressure-fi lled accumulator) operates at high pressure. Ensure that all system pressure
is released before carrying out any servicing work. Never carry out any welding, soldering or mechanical work on the accumulator
unit.
MC_0440
General Installation Considerations and Precautions Guidelines

5
6463 22022
-
SPS-B
Addition Supporting Manuals
Follow the addition of supporting manuals to aid in the installation process of this product.
MC_0308
Hydraulic Systems
Installation Guide

66463 22022
-
SPS-B
MG_0305
IMPORTANT
Consider and plan the positioning/orientation of the
actuator to achieve the full fin range of movement in
both directions.
Also, ensure to achieve the correct fin alignment parallel
to the keel of the yacht.
The fin actuator assembly may be installed in any
convenient radial 360° position in the hull.
A
B
C
E
F
G H
I
D
MG_0304
Hull boss
Actuator
mounting
plate
Ribs
Hull
Shaft sealant hub
Shaft
Twin yoke
Rod end pin Cover, encoder
Actuator valve unit
Cylinder
Top sealant plate
Hull boss
Rod end
Key Components
IMPORTANT
Bearings must NOT be lubricated with any kind lubrication.
This will damage the function of the bearings.

7
6463 22022
-
SPS-B
MG_0305
IMPORTANT
Consider and plan the positioning/orientation of the
actuator to achieve the full fin range of movement in
both directions.
Also, ensure to achieve the correct fin alignment parallel
to the keel of the yacht.
The fin actuator assembly may be installed in any
convenient radial 360° position in the hull.
A
B
C
E
F
G H
I
D
MC_0302
Actuator Measurements
mm inch mm inch mm inch
346 13.6 496 19.5 576 22.7
260 10.2 - - - -
90 3.5 240 9.4 320 12.6
235 9.3 - - - -
172 6.8 - - - -
600 23.6 - - - -
300 11.8 - - - -
571 22.5 - - - -
700 27.6 - - - -
90 3.5 - - - -
mm inch mm inch mm inch
346 13.6 496 19.5 576 22.7
260 10.2 - - - -
90 3.5 240 9.4 320 12.6
235 9.3 - - - -
172 6.8 - - - -
600 23.6 - - - -
300 11.8 - - - -
571 22.5 - - - -
700 27.6 - - - -
90 3.5 - - - -
Measurement
code Measurement description mm inch mm inch mm inch
ATotal actuator height 260 10.2 357 14.1 398 15.7
B Actuator height inside the hull 190 7.5 - - - -
C Hull thickness (sealant included) 70 2.8 167 6.6 208 8.2
D Diameter of the actuator shaft sealant hub 175 6.9 - - - -
E Height of valve unit 146 5.7 - - - -
F Actuator Width 495 19.5 - - - -
G Actuator Length 247.5 9.7 - - - -
H Actuator Length 521 20.5 - - - -
I Swing Distance 650 25.6 - - - -
Shaft Ø 65 2.6 - - - -
Weight (kg / lbs) 105 231.5
105 231.5 105 231.5
*67b *94b *97b
*67b HULL
THICKNESS *94b HULL
THICKNESS
*97b HULL
THICKNESS
*67b HULL
THICKNESS *94b HULL
THICKNESS
*97b HULL
THICKNESS
MG_0304
Hull boss
Actuator
mounting
plate
Ribs
Hull
Shaft sealant hub
Shaft
Twin yoke
Rod end pin Cover, encoder
Actuator valve unit
Cylinder
Top sealant plate
Hull boss
Rod end
Key Components
IMPORTANT
Bearings must NOT be lubricated with any kind lubrication.
This will damage the function of the bearings.

86463 22022
-
SPS-B
MG_0308
Min 70 mm
D
C
A
B
IMPORTANT
Ensure that all equipment with physical functions (actuators, valves, electrical & hydraulic connection points) are
installed so that you allow space in the boat after reasonable dismantling of other parts or interior / furniture (fit
service hatch or similar) for service access as per the following illustrations to get ample room for maintenance and any
necessary service or repairs.
This is the installer/boat builders full responsibility
MG_0210
D
A
B
C
Fins have zero weight in water
MC_0251
Vector Fin Measurements
Measurement
code Measurement description
mm inch mm inch mm inch mm inch mm inch mm inch
ATotal Length 1618 63.7 1835 72.2 2081 81.9 2081 81.9 2081 81.9 2081 81.9
B Length to Shaft centre 1186 46.7 1345 53 1481 58.3 1371 58.3 1481 58.3 1591 58.3
CTotal Height 847 33.3 956.5 37.7 1054.1 41.5 1054.1 41.5 1054.1 41.5 1054.1 41.5
D Width 429 16.9 485 19.1 533 21 533 21 533 21 533 21
*VF 1050 *VF 1950
HS
*VF 1950
MIX
*VF 1950
AA
*VF 1350
*HS - High Speed priority
*MIX - Balanced priority
*AA - At Anchor priority
*VF 1650
Size m² 1.1 10.9 1.35 14.5 1.65 17.8 1.65 17.8 1.65 17.8 1.65 17.8

9
6463 22022
-
SPS-B
MG_0308
Min 70 mm
D
C
A
B
IMPORTANT
Ensure that all equipment with physical functions (actuators, valves, electrical & hydraulic connection points) are
installed so that you allow space in the boat after reasonable dismantling of other parts or interior / furniture (fit
service hatch or similar) for service access as per the following illustrations to get ample room for maintenance and any
necessary service or repairs.
This is the installer/boat builders full responsibility
Measurement
code Measurement description mm inch mm inch mm inch
ATotal actuator length 770 30.3 - - - -
BTotal actuator width 650 65.6 - - - -
C Actuator height inside the hull 190 7.5 - - - -
D Length of actuator shaft from inside the hull 450 12.5 547 21.5 588 23.2
MC_0304
Measurement Clearance
mm inch mm inch mm inch
871 34.3 - - - -
700 27.6 - - - -
260 10.2 - - - -
? ? ? ? ? ?
mm inch mm inch mm inch
871 34.3 - - - -
700 27.6 - - - -
260 10.2 - - - -
? ? ? ? ? ?
*94b*67b *97b
*94b
HULL
THICKNESS
*67b
HULL
THICKNESS
*97b
HULL
THICKNESS
*94b
HULL
THICKNESS
*67b
HULL
THICKNESS
*97b
HULL
THICKNESS
MG_0210
D
A
B
C
Fins have zero weight in water
MC_0251
Vector Fin Measurements
Measurement
code Measurement description
mm inch mm inch mm inch mm inch mm inch mm inch
ATotal Length 1618 63.7 1835 72.2 2081 81.9 2081 81.9 2081 81.9 2081 81.9
B Length to Shaft centre 1186 46.7 1345 53 1481 58.3 1371 58.3 1481 58.3 1591 58.3
CTotal Height 847 33.3 956.5 37.7 1054.1 41.5 1054.1 41.5 1054.1 41.5 1054.1 41.5
D Width 429 16.9 485 19.1 533 21 533 21 533 21 533 21
*VF 1050 *VF 1950
HS
*VF 1950
MIX
*VF 1950
AA
*VF 1350
*HS - High Speed priority
*MIX - Balanced priority
*AA - At Anchor priority
*VF 1650
Size m² 1.1 10.9 1.35 14.5 1.65 17.8 1.65 17.8 1.65 17.8 1.65 17.8

10 6463 22022
-
SPS-B
MC_0207
Hull Forces
All calculated values are normalised, determined by equilibrium considerations and also that various coeffi cients are inaccurate as hull design etc will
affect the actual fi n effect.
Dynamic effects such as jumps/impacts with waves, back flow closing of valve etc could further increase the hull/shaft loads. Therefore all
dimensioning should account for this by using a safety factor.
The aft top face of the fi n is deliberately made weaker than the rest of the fi n so it will break easier in case of an impact with the hull.
It is advised to strengthen the hull or ensure it is manufactured with materials suitable to sustaining impacts over the total length of the fi n within an
area of approximately 10 degrees of fi n rotation in each direction from its centre.
(NB: This is a safety measure to ensure the fi n will not break through the hull in a collision situation.)
Sleipner curved Vector Fin design comes with additional benefi ts in hull safety. Any impact with the ground will not only bend the shaft backwards and
outward, allowing the fi n to break away with less stress on the hull.
MG_0284
Bending moment
(Mx and My
components)
Shear force
(FX and Fy
components)
Axial shaft
force (fz)
Torque
moment (Mz)
Outer surface
hull
MC_0253
Fin Loads on Hull
Fin size Speed Bending
moment
(Mx+My)
Twisting
torque
(Mz)
Axial
shaft
(Fz)
Shear
force
(Fx+Fy)
Shaft
breakaway
SPS66/67
VF1050
10 kn 5500 Nm 3400 Nm 5000 N 10200 N 350 kN
15 kn 6500 Nm 3400 Nm 6000 N 11200 N 350 kN
20 kn 8200 Nm 3400 Nm 7300 N 12200 N 350 kN
25 kn 9600 Nm 3400 Nm 8600 N 14200 N 350 kN
30 kn 10000 Nm 3400 Nm 9000 N 15500 N 350 kN
35 kn 10000 Nm 3400 Nm 9000 N 23300 N 350 kN
40 kn 10000 Nm 3400 Nm 9000 N 23300 N 350 kN
SPS92
VF1350
10 kn /
Min
10500 Nm 7000 Nm 6500 N 19000 N 940 kN
15 kn 12500 Nm 7000 Nm 10000 N 20000 N 940 kN
20 kn 15000 Nm 7000 Nm 12000 N 21000 N 940 kN
25 kn 17500 Nm 7000 Nm 13700 N 22500 N 940 kN
30 kn 18000 Nm 7000 Nm 14600 N 27500 N 940 kN
35 kn 18000 Nm 7000 Nm 14600 N 35000 N 940 kN
40 kn 18000 Nm 7000 Nm 14600 N 35000 N 940 kN
SPS93
VF1650
10 kn /
Min
11500 Nm 7000 Nm 8000 N 18000 N 940 kN
15 kn 13500 Nm 7000 Nm 10500 N 19000 N 940 kN
20 kn 17500 Nm 7000 Nm 12500 N 21000 N 940 kN
25 kn 20000 Nm 7000 Nm 14500 N 23000 N 940 kN
30 kn 20500 Nm 7000 Nm 15000 N 28000 N 940 kN
35 kn 20500 Nm 7000 Nm 15000 N 38000 N 940 kN
40 kn 20500 Nm 7000 Nm 15000 N 38000 N 940 kN
Fin size Speed Bending
moment
(Mx+My)
Twisting
torque
(Mz)
Axial
shaft
(Fz)
Shear
force
(Fx+Fy)
Shaft
breakaway
SPS95B
VFS1950
22%
SHAFT
POSI-
TION
10 kn /
Min
7800 Nm 7800 Nm 3800 N 18000 N 940 kN
15 kn 12600 Nm 7800 Nm 8500 N 31000 N 940 kN
20 kn 14600 Nm 7800 Nm 10600 N 34000 N 940 kN
25 kn 15100 Nm 7800 Nm 16500 N 37000 N 940 kN
30 kn 17000 Nm 7800 Nm 18200 N 41500 N 940 kN
35 kn 18350 Nm 7800 Nm 24800 N 43500 N 940 kN
40 kn 20000 Nm 7800 Nm 32000 N 47000 N 940 kN
SPS95B
VFS1950
26%
SHAFT
POSI-
TION
10 kn /
Min
7600 Nm 7800 Nm 3800 N 18000 N 940 kN
15 kn 16000 Nm 7800 Nm 8500 N 40000 N 940 kN
20 kn 19600 Nm 7800 Nm 10600 N 49000 N 940 kN
25 kn 20200 Nm 7800 Nm 16500 N 50488 N 940 kN
30 kn 22700 Nm 7800 Nm 18200 N 57000 N 940 kN
35 kn 24300 Nm 7800 Nm 24800 N 60000 N 940 kN
40 kn 26300 Nm 7800 Nm 32000 N 64200 N 940 kN
SPS95B
VFS1950
30%
SHAFT
POSI-
TION
10 kn /
Min
7500 Nm 7800 Nm 3800 N 18000 N 940 kN
15 kn 17000 Nm 7800 Nm 8500 N 40000 N 940 kN
20 kn 28600 Nm 7800 Nm 10600 N 64000 N 940 kN
25 kn 31700 Nm 7800 Nm 16500 N 81000 N 940 kN
30 kn 35900 Nm 7800 Nm 18200 N 92000 N 940 kN
35 kn 38200 Nm 7800 Nm 24800 N 99000 N 940 kN
40 kn 41100 Nm 7800 Nm 32000 N 105000 N 940 kN
Maximum 30 knots top speed for SPS55 / VF1050 combination

11
6463 22022
-
SPS-B
MC_0207
Fin Positioning
No part of the fi n should be above water level during normal roll motion/under normal sea conditions.
Fins should not extend outside the beam or below the keel when in neutral position.
Fins should be placed as far outboard as possible, and NOT in-line with the propellers, to ensure avoiding possible disturbance of the water flow to
the props which in the worst case can cause vibrations / cavitation.
MC_0207
Hull Forces
All calculated values are normalised, determined by equilibrium considerations and also that various coeffi cients are inaccurate as hull design etc will
affect the actual fi n effect.
Dynamic effects such as jumps/impacts with waves, back flow closing of valve etc could further increase the hull/shaft loads. Therefore all
dimensioning should account for this by using a safety factor.
The aft top face of the fi n is deliberately made weaker than the rest of the fi n so it will break easier in case of an impact with the hull.
It is advised to strengthen the hull or ensure it is manufactured with materials suitable to sustaining impacts over the total length of the fi n within an
area of approximately 10 degrees of fi n rotation in each direction from its centre.
(NB: This is a safety measure to ensure the fi n will not break through the hull in a collision situation.)
Sleipner curved Vector Fin design comes with additional benefi ts in hull safety. Any impact with the ground will not only bend the shaft backwards and
outward, allowing the fi n to break away with less stress on the hull.
MG_0284
Bending moment
(Mx and My
components)
Shear force
(FX and Fy
components)
Axial shaft
force (fz)
Torque
moment (Mz)
Outer surface
hull

12 6463 22022
-
SPS-B
To avoid unwanted influences on the steering characteristics, the fi ns should be placed close to the vessel longitudinal centre of gravity (LCG)
- If unknown, this is usually a little aft of 50% of the waterline length.
For high speed vessels, the fi ns should be placed with trailing/leading edge within middle 1/4 of waterline length at speed and not in front of the
LCG.
For vessels with top speed under 15 knots, fi n may be placed within the middle 1/4 of waterline length.
Waterline at rest
Waterline at speed
Middle 1/4 of
Waterline at speed
Middle 1/4
of Waterline
MC_0207
Fin Positioning
IMPORTANT
These are general guidelines and some hull types might allow for an installation position outside of this recommendation.

13
6463 22022
-
SPS-B
MC_0207
Fin Positioning
Transversal fi n positioning of Vector FinsTM
With Vector fi nsTM it is a priority to push the fi ns as far outboard as possible to achieve the most leverage for the fi ns forces unlike standard fi ns.
With Sleipner stabilizers enable installation of the fi ns to have different stroke angles inboard and outboard as the locked centre and cruising centre is
flexible because they are locked hydraulically.
Avoid cutting off any of the back top section of the fi n (normal on most fi ns on hard-chine boats) as this will cause added resistance/ drag by the fi n.
(NB: Common on fi ns on hard-chine boats). This will create a recess area that will allow water at higher speeds and anchor stabilization to lose force
also as part of the water will pass easier between the hull and the fi n. Additional due to the outward ”bend” of the fi ns keeping the lower part inside
the boats ”envelope” it will result in the upper part of the fi ns being further inboard that creates less of an outboard stroke in the upper part of the fi n
(along the hull).
Finding the best position for the fi n and actuator positioning often is related to the inside confi guration and space that is required for proper
installation.
General Rules:
–Push the actuators as far as possible outboard, keeping at least 22 degrees of outboard stroke as a minimum (NB: if less, and the lower part is within
boat envelope, a small cut-away of the back upper part can be done as a compromise).
It is also acceptable installing the fi ns further inboard If inside confi guration/ access to inside parts of actuators is required. (NB: Performance will be
reduced slightly due to less leverage arm for the stabilizing force applied by the fi ns.)
MG_0214
VF650 575 / 810 350 / 625
VF800 642 / 900 390 / 695
VF1050 731 / 1016 444 / 791
VF1350 828 / 1150 504 / 897
VF1650 914 / 1305 557 / 1001
*VF1950 *991 / *1386 674 / 1112
Measurements along hull bottom outwards to chine(upper) and outside boat ”envelope” (lower) in mm,
center shaft to chine start / outside envelope:
At maximum: 38o o
At minimum : 22
Fin size Upper / lower Upper / Lower
“Top” view“Boat” view
38°
Lower
at min:
22
Lower
at max:
38
Upper
at min:
22
Upper
at max:
38
Upper limit for Fin
Lower limit for Fin
W.L
o
o
o
o
To avoid unwanted influences on the steering characteristics, the fi ns should be placed close to the vessel longitudinal centre of gravity (LCG)
- If unknown, this is usually a little aft of 50% of the waterline length.
For high speed vessels, the fi ns should be placed with trailing/leading edge within middle 1/4 of waterline length at speed and not in front of the
LCG.
For vessels with top speed under 15 knots, fi n may be placed within the middle 1/4 of waterline length.
Waterline at rest
Waterline at speed
Middle 1/4 of
Waterline at speed
Middle 1/4
of Waterline
MC_0207
Fin Positioning
IMPORTANT
These are general guidelines and some hull types might allow for an installation position outside of this recommendation.

14 6463 22022
-
SPS-B
MC_0207
Fin Modifi cation
Stabilizor fin GRP Repair.pdf 1 28.04.2011 13:49:06
In case of the fi n positioning being so that you need to cut down some
of the top aft end of the fi n to avoid it hitting the hull (very typical on
planning boats with hard chines), please do so as per the instructions
below.

15
6463 22022
-
SPS-B
MG_0300
2
1
3
IMPORTANT
The hull boss axis must be
perpendicular to the outer hull
surface.
IMPORTANT
Inner hull boss diameter to be snug
fit with actuator shaft sleeve.
IMPORTANT
Hole diameter can vary depending on
outer dimensions of hull boss to be used.
Machined surface to fit
actuator shaft sleeve diameter
Mechanical Installation
Defi ne the optimal position of the stabilizer fi ns.
1. Prepare a suitable hole xx mm diameter hole in the yachts hull, matching the outer dimensions of hull boss.
2. Insert the hull boss, ensuring it is level with the outside hull surface.
3. Spot weld the hull boss to the hull on the inside of the yacht.
MC_0261
!Please refer to the graphic for special considerations relating to your model !
IMPORTANT
Following steel/aluminium installation instructions and reinforcement parts are only a principal suggestion on how to install the system
and therefore will bear no responsibility in regards to the installation of our products onto sea going vessels. This includes any requirement
for the vessels hull reinforcement, change in stability, its dynamic performance, its weight and moment, its noise proofi ng or its watertight
integrity after installation during normal operations or in the event of a collision.
It is the responsibility of the installer/boat builder to determine hull reinforcement requirements and materials, ensuring that suffi cient
strengthening measures are in place & the vessels hull will withstand & maintain watertight integrity after installation.
The recommendations made in this manual are to be used as starting guidelines only, and Sleipner strongly recommend that advise prior to
installation should be obtained from a naval architect familiar with the particular materials, vessel brand, prior to installation.
(Actuator details that are illustrated in this document can differ from current actuator model/version. Also the height of the hull boss
illustrated can differ from actual hull boss used. However, it will not affect the installation principles suggested in this document.)
MC_0207
Fin Modifi cation
Stabilizor fin GRP Repair.pdf 1 28.04.2011 13:49:06
In case of the fi n positioning being so that you need to cut down some
of the top aft end of the fi n to avoid it hitting the hull (very typical on
planning boats with hard chines), please do so as per the instructions
below.

16 6463 22022
-
SPS-B
MG_0309
2
1
3 4
IMPORTANT
DO NOT weld the hull
plate at this point.
IMPORTANT
Tolerances for the reinforced hull
frame height is +0/-5mm.
The height of the frame must
NOT be larger than the required
measurement.
(Standard 70mm/ 167/208mm
SPS67, Or custom made height)
Mechanical Installation
1. Adjust the hull thickness/frame height to the required measurement of the actual hull boss (Or, Standard 70mm/ 167/208mm SPS67) & ensure
that the internal and external surfaces are parallel and flat.
2. Assemble the ribs and the hull plate together and fi t the assembly to the hull boss.
3. Ensure the hull plate and hull boss are completely level on top and in bottom.
4. Spot weld the ribs to the hull and hull boss. Keep the hull plate in position without welding it to the ribs.
MC_0261
!Please refer to the graphic for special considerations relating to your model !

17
6463 22022
-
SPS-B
MG_0316
1
2
3
45
IMPORTANT
Ensure that the ribs, hull boss and the hull
plate will be completely level and flat
internally and externally.
IMPORTANT
When welding procedure is completed,
ensure to grind and sand the top surface to a
smooth and even surface.
Mechanical Installation
1. Remove the hull plate to make space for welding the ribs and the hull boss completely to the hull.
2. Fully weld the ribs and the hull boss to the hull.
3. Re-place the hull plate to begin welding the hull plate to the ribs and hull boss.
4. Fully weld the hull plate to the ribs and the hull boss.
5. Fully weld the top of the hull plate to the ribs. Fully weld the top circular recess.
MC_0261
!Please refer to the graphic for special considerations relating to your model !
MG_0309
2
1
3 4
IMPORTANT
DO NOT weld the hull
plate at this point.
IMPORTANT
Tolerances for the reinforced hull
frame height is +0/-5mm.
The height of the frame must
NOT be larger than the required
measurement.
(Standard 70mm/ 167/208mm
SPS67, Or custom made height)

18 6463 22022
-
SPS-B
MG_0317
1 2 - 3
4
IMPORTANT
Clean and degrease the hull boss internally.
IMPORTANT
Do not lift or attach
lifting equipment to
the actuating
cylinders or their
rams.
IMPORTANT
Sealant must be compatible with base plate
and hull plate material. Naval architect/ Boat
builder must confirm this. Ensure to prepare
and prime the surfaces according to sealant
supplier technical data-sheet.
Mechanical Installation
MOUNTING OF THE STABILIZER ACTUATOR ASSEMBLY
1. Hull reinforcement is now completed and prepared for mounting of actuator assembly.
2. Apply a solid amount of sealant in the recess, and apply sealant inside of the hull boss.
3. Using appropriate lifting equipment (sling) lift the Stabilizer Actuator assembly by the Top Seal Plate Cylinder Mount Arms.
4. Carefully lower the Stabilizer Actuator Assembly into the hulls reinforced frame & place in the correct orientation before laying onto the sealant
mounting surface. Utilize and attach the securing bolts to lock the correct Actuator Assembly positioning.
Apply grease on threads of the securing bolts/nuts and secure each with a locking washer and a nut. Tighten & torque load the securing bolt nuts
diagonally to avoid misalignment to 110 Nm.
MC_0261
!Please refer to the graphic for special considerations relating to your model !
MG_0318
1
2

19
6463 22022
-
SPS-B
MG_0317
1 2 - 3
4
IMPORTANT
Clean and degrease the hull boss internally.
IMPORTANT
Do not lift or attach
lifting equipment to
the actuating
cylinders or their
rams.
IMPORTANT
Sealant must be compatible with base plate
and hull plate material. Naval architect/ Boat
builder must confirm this. Ensure to prepare
and prime the surfaces according to sealant
supplier technical data-sheet.
Mechanical Installation
MOUNTING OF THE STABILIZER ACTUATOR ASSEMBLY
1. Hull reinforcement is now completed and prepared for mounting of actuator assembly.
2. Apply a solid amount of sealant in the recess, and apply sealant inside of the hull boss.
3. Using appropriate lifting equipment (sling) lift the Stabilizer Actuator assembly by the Top Seal Plate Cylinder Mount Arms.
4. Carefully lower the Stabilizer Actuator Assembly into the hulls reinforced frame & place in the correct orientation before laying onto the sealant
mounting surface. Utilize and attach the securing bolts to lock the correct Actuator Assembly positioning.
Apply grease on threads of the securing bolts/nuts and secure each with a locking washer and a nut. Tighten & torque load the securing bolt nuts
diagonally to avoid misalignment to 110 Nm.
MC_0261
!Please refer to the graphic for special considerations relating to your model !
MG_0318
1
2
Mechanical Installation MC_0254
!Please refer to the graphic for special considerations relating to your model !
1. Coat the securing bolts with sealant and insert into the External Securing Plate, the Yachts hull and the Actuator Assembly and secure each with a
locking washer and a nut. Tighten & torque load the securing bolt nuts diagonally to avoid misalignment
2. Connect a ground wire from the yachts main bonding/anode system to each actuator.

20 6463 22022
-
SPS-B
MG_0222
Bow Thruster
Fin Valve UnitFin Valve Unit
STB StabilizerPort Stabilizer
AC motor mounted or
generator mounted pump
Optional Standalone/ System Rack w/AC
motor or generator and valves included
PTO pump PTO pump
Stern Thruster
Hydraulic Tank Unit/ system Rack
For specific details see the hydraulic system installation,
Start-up, User & Service Manual. Actual system drawings
and diagrams will follow the product and specific system
manual on delivery.
Hydraulic Installation