Seakeeper 3 User manual

INSTALLATION
MANUAL
Product:
Document #:
Rev:
SEAKEEPER 3 90378 4
SEAKEEPER 3
INSTALLATION MANUAL
JUNE 2018
Contents:
Section 1 – Mechanical Installation
Section 2 – Electrical Installation
Section 3 – Cooling Installation
Section 4 – Startup
Section 5 – Installation Checklist and Required Supplies
44425 PECAN COURT, SUITE 151
CALIFORNIA, MARYLAND, 20619, U.S.A
PHONE: [phone]
FAX: [phone]
E-MAIL: [email protected]

JUNE 2018, Revision 4
INSTALLATION MANUAL

INSTALLATION
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SEAKEEPER 3 90378 4 1 of 15
Section 1: MECHANICAL INSTALLATION
1.0 Introduction
This document is intended to give details and guidance to a boat builder or equipment installer
to install the Seakeeper 3. The Seakeeper 3 is capable of producing loads up to 8.60KN (1,934
lbs.) at each of the four mounts and careful consideration should be given to foundation design
to insure it is capable of transferring these loads into the hull. These loads do NOT include
vessel motion accelerations, such as vertical slam loads which can be high for higher speed
vessels.
There are two methods of installing the Seakeeper 3:
1) Longitudinal Bolt-In Installation
2) Transverse Bolt-In Installation
It is assumed that the installer is familiar with mounting using mechanical fasteners to
marine structures and has performed structural analysis to assure the structure to which
the Seakeeper mounts can properly transfer the loads the Seakeeper creates into the hull
structure. If the installer has any doubt about the ability of the structure to transfer the
loads to the hull then a licensed naval architect or marine engineer should be contacted
to do a structural analysis.
The installer should review the following list of reference drawings to ensure the installation
procedure is fully understood.
Reference Drawings
90388 Seakeeper 3 Hardware Scope of Supply
90374 Seakeeper 3 Installation Details – Bolt in Method
90376 Seakeeper 3 Cooling Water Schematic
90362 Seakeeper 3 Installation Template Kit
90377 Seakeeper 3 Cable Block Diagram
FIGURE 1 – SEAKEEPER 3

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SEAKEEPER 3 90378 4 2 of 15
Section 1: MECHANICAL INSTALLATION
1.1 Precautions
•The Seakeeper must only be lifted from the supplied lifting eyes (See Section 1.4).
•The Seakeeper flywheel is supported by precision bearings. Make certain while
unpacking and lifting the Seakeeper assembly to NOT drop or impart mechanical shock
as damage to bearings could result.
•While handling / installing the Seakeeper assembly, protect exposed hydraulic brake
cylinder rods (See Figure 1) from scratches or damage as this could lead to premature
seal failure and oil leaks.
•While handling / installing the Seakeeper assembly, do not allow electrical fittings that
exit bottom of the Seakeeper enclosure to come in contact with any surface or object as
this could damage the fittings and potentially affect the vacuum integrity of the
enclosure.
•Exercise care to protect the painted finish as damage to finish could lead to early
appearance degradation of the installed Seakeeper.
1.2 Selection of Seakeeper Installation Location
Selection of mounting location of the Seakeeper should consider the following desirable
features:
The Seakeeper should be installed aft of amidships to minimize high
acceleration loadings due to hull/wave impacts during operation at
high speed or in large waves. If the only possible Seakeeper location
is forward of amidships then the installer should have Seakeeper
review the installation location prior to finalizing the design.
•Overhead access or sufficient clearance for removal / re-installation of the
Seakeeper for overhaul in future years.
•The Seakeeper should be installed in a dry space to minimize effects of corrosion.
•Clearance for all recommended scheduled maintenance and any repairs is necessary,
(See Figure 2)

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SEAKEEPER 3 90378 4 3 of 15
Section 1: MECHANICAL INSTALLATION
VIEWS SHOWING RECOMMENDED CLEARANCES AROUND THE SEAKEEPER FOR USE OF HANDTOOLS,
EASE OF MAINTENANCE, INSTALLATION, AND PROPER OPERATION.
FIGURE 2 – INSTALLED SEAKEEPER CLEARANCE CONSIDERATIONS

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SEAKEEPER 3 90378 4 4 of 15
Section 1: MECHANICAL INSTALLATION
FIGURE 3 – BEAMS CLEARANCE CONSIDERATIONS
Refer to Figure 3 for recommended clearances to transverse or longitudinal beams.
Clearances aft of the Seakeeper are shown to provide access for regular scheduled
maintenance.

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SEAKEEPER 3 90378 4 5 of 15
Section 1: MECHANICAL INSTALLATION
Safety
There is a large torque about the gimbal axis when the Seakeeper is
precessing. Seakeeper cover panels are provided to prevent personnel or
equipment from contacting the Seakeeper while it is in operation. These covers
should not be stepped on, or have anything placed on top. The covers should
always be in place during operation. If it is ever necessary to access the
Seakeeper while the flywheel is spinning, the Seakeeper must be locked at the
display to stop the Seakeeper from precessing. Seakeeper regular scheduled
maintenance should not be attempted unless the Seakeeper is locked and the
flywheel has stopped spinning.
The Seakeeper should be treated with the same respect one gives a high speed
rotating propeller shaft or engine shaft.
Noise/Soundproofing
Seakeeper noise has been measured under steady state conditions (no wave load) in
Seakeeper's lab and in our test boat. The steady state noise is typically in the range of 64-66
dBC un-weighted. As the frequencies emitting the highest sound pressures are low (like other
marine machinery), it is recommended that the Seakeeper be installed in a machinery space
that is already treated with soundproofing.

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SEAKEEPER 3 90378 4 6 of 15
Section 1: MECHANICAL INSTALLATION
1.3 Transport and Unpacking
1.3.1 Transport
1) Use a Seakeeper provided shipping crate for transport, part number 11358. Overall
dimensions of a fully packed crate are 40.5”Lx40.5”Wx43”H with a weight of 766
lbs(348kgs).
2) Do not stack Seakeeper shipping crates.
3) Both Air and Ground transport are acceptable.
4) Seakeeper shipping crates must be transported in environmental conditions between
-20°C and 60°C.
1.3.2 Unpacking Crate
1) Reference Seakeeper Drawing No. 90388, Seakeeper 3 Hardware Scope of Supply for
items that ship with the corresponding Seakeeper model.
2) Remove covers, electrical components, display, cables, and misc. items and set aside.
3) Remove packing materials that secure Seakeeper assembly inside the crate.
4) Attach a spreader bar (Seakeeper #80283) to the two lifting eyes located on the top of
the Seakeeper enclosure. Stay clear of any other parts on the Seakeeper. The
Seakeeper 3 weighs 249 kg (550 lbs). See Figure 4 below.
FIGURE 4 – LIFTING ARRANGEMENT
Spreader Bar
Lifting Eyes

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SEAKEEPER 3 90378 4 7 of 15
Section 1: MECHANICAL INSTALLATION
1.4Longitudinal Bolt-In Installation
1.4.1 Check and Preparation of Hull Structure
The Seakeeper 3 can be affixed to the hull structure using two methods 1) Longitudinal Beam
Bolt-In installation or 2) Transverse Beam Bolt-In installation. Neither option affects the
operation of the Seakeeper. However, one option might ease the installation process or allow
for a larger service envelope. Depending on the structure to which the Seakeeper is fastened,
blind threaded holes or thru-bolting can be utilized.
Refer to Seakeeper Drawing No. 90374, Seakeeper 3 Installation Details – Bolt in Method.
Important dimensional and load information is given in this drawing that will impact the design
details of the structure that will receive the Seakeeper. It is assumed that a proper structural
analysis has been performed for the hull structure to which the Seakeeper will be fastened to
insure proper strength margins for the loads the Seakeeper will create during operation.
The hull structure supporting the Seakeeper should be installed so the Seakeeper is parallel to
the waterline. In addition, the four areas on top of the beams on which the feet of the
Seakeeper foundation and isolation gaskets will rest, need to be co-planar within .06”
(1.5 mm) to minimize potential distortion of Seakeeper support frame when installed. The
isolation gaskets are only used on dissimilar metal to metal contacts
Seakeeper offers an optional installation template kit, P/N 90362, which contains four plates that
mimic the mating surfaces of the four feet located on the Seakeeper’s foundation. These plates
have 4 holes located at the same centers as the mounting holes on the Seakeeper. The fixture
locates the hole patterns at the proper spacing both in the fore-aft direction and the port-
starboard direction. See Figures 5 below. Once assembled, the fixture can be used to check
clearances and alignment of the hull structure.
Note: Do NOT use the installation fixture to establish the Seakeeper envelope
dimensions. Refer to Drawing No. 90374 for envelope dimensions. A 3-D model of the
Seakeeper is available on the Seakeeper website (www.seakeeper.com) to aid in
designing the Seakeeper foundation and the space around the Seakeeper.
NOTE: MAKE SURE NO OBSTRUCTIONS FROM THE HULL STRUCTURE CAN BE SEEN WITHIN THE INSIDE
OF THE INSTALLATION TEMPLATE KIT (INSIDE THE MARKED RED LINES). REFERENCE SEAKEEPER
DRAWING NO. 90374.

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SEAKEEPER 3 90378 4 8 of 15
Section 1: MECHANICAL INSTALLATION
FIGURE 5 – EXPLODED VIEW OF INSTALLATION FIXTURE
CAUTION: Tight clearances from cable guide bands to hull structure. See above figure
for dimensions and reference Seakeeper drawing NO. 90374 for complete Seakeeper 3
envelope.

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SEAKEEPER 3 90378 4 9 of 15
Section 1: MECHANICAL INSTALLATION
1.4.2 Transfer of Holes to Boat Structure
1) Lower assembled fixture onto hull structure.
2) The four areas where the feet of
the Seakeeper will rest should be
coplanar to within .06” (1.5 mm).
See Figure 10.
3) Align fixture in desired location and
transfer holes from fixture plate to
the hull structure. Note that holes in
fixture plate are ø0.64 (16.256 mm).
4) Remove fixture and drill and tap
M16X2.0 Helicoil threaded insert
holes in hull structure at marked
locations to mate with holes in the
Seakeeper foundation. Take
special care to drill perpendicular
to mounting surface. A drill guide
is recommended. Remove any
impeding obstructions.

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SEAKEEPER 3 90378 4 10 of 15
Section 1: MECHANICAL INSTALLATION
1.4.3 Installation of Seakeeper
1) Locate and position 4 isolation gaskets onto
foundation beams (for metal to metal contacts only).
NOTE: Sealant or caulk is recommended to be
applied. Apply a small bead (approximately 4 mm
wide) of sealant (silicone or caulk) between both
mating surfaces of each isolation gasket where it
contacts the beam and the Seakeeper. This will
prevent water from wicking between the parts and
setting up corrosion. Check isolation gasket
alignment by test fitting bolts without any
obstructions.
2) Lower Seakeeper into position onto the hull
foundation beams and align over drilled holes.
3) Install Seakeeper supplied M16 fasteners Or Grade
10.9, M16-2.0 bolts to maintain a minimum thread
engagement of .94 in (23.8 mm) – apply a moderate
coat of removable thread locker to the threads of
each bolt and include a small bead of sealant under each washer before installation.
4) Torque all fasteners to 135 ft-lbs (183 N-m). (revision 4)
5) Proceed to electrical and cooling portion of the installation.
TORQUE TO 135 FT-LBS.4X

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SEAKEEPER 3 90378 4 11 of 15
Section 1: MECHANICAL INSTALLATION
1.5Transverse Bolt-In Installation
1.5.1 Check and Preparation of Hull Structure
The Seakeeper 3 can be affixed to the hull structure using two methods 1) Longitudinal Beam
Bolt-In installation or 2) Transverse Beam Bolt-In installation. Neither option affects the
operation of the Seakeeper. However, one option might ease the installation process or allow
for a larger service envelope. Depending on the structure to which the Seakeeper is fastened,
blind threaded holes or thru-bolting can be utilized.
Refer to Seakeeper Drawing No. 90374, Seakeeper 3 Installation Details – Bolt in Method.
Important dimensional and load information is given in this drawing that will impact the design
details of the structure that will receive the Seakeeper. It is assumed that a proper structural
analysis has been performed for the hull structure to which the Seakeeper will be fastened to
insure proper strength margins for the loads the Seakeeper will create during operation.
The hull structure supporting the Seakeeper should be installed so the Seakeeper is parallel to
the waterline. In addition, the four areas on top of the beams on which the feet of the
Seakeeper foundation and isolation gaskets will rest, need to be co-planar within .06”
(1.5 mm) to minimize potential distortion of Seakeeper support frame when installed. The
isolation gaskets are only used on dissimilar metal to metal contacts
Seakeeper offers an optional installation template kit, P/N 90362, which contains four plates that
mimic the mating surfaces of the four feet located on the Seakeeper’s foundation. These plates
have 4 holes located at the same centers as the mounting holes on the Seakeeper. The fixture
locates the hole patterns at the proper spacing both in the fore-aft direction and the port-
starboard direction. See Figures 5 below. Once assembled, the fixture can be used to check
clearances and alignment of the hull structure.
Note: Do NOT use the installation fixture to establish the Seakeeper envelope
dimensions. Refer to Drawing No. 90374 for envelope dimensions. A 3-D model of the
Seakeeper is available on the Seakeeper website (www.seakeeper.com) to aid in
designing the Seakeeper foundation and the space around the Seakeeper.
NOTE: MAKE SURE NO OBSTRUCTIONS FROM THE HULL STRUCTURE CAN BE SEEN WITHIN THE INSIDE
OF THE INSTALLATION TEMPLATE KIT (INSIDE THE MARKED RED LINES). REFERENCE SEAKEEPER
DRAWING NO. 90374.

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SEAKEEPER 3 90378 4 12 of 15
Section 1: MECHANICAL INSTALLATION
FIGURE 5 – EXPLODED VIEW OF INSTALLATION FIXTURE
CAUTION: Tight clearances from cable guide bands to hull structure. See above figure
for dimensions and reference Seakeeper drawing NO. 90374 for complete Seakeeper 3
envelope.

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SEAKEEPER 3 90378 4 13 of 15
Section 1: MECHANICAL INSTALLATION
1.5.2 Transfer of Holes to Boat Structure
5) Lower assembled fixture onto hull structure.
6) The four areas where the feet of the Seakeeper will rest should be coplanar to within
.06” (1.5 mm). See Figure 10.
7) Align fixture in desired location and transfer holes from fixture plate to the hull structure.
Note that holes in fixture plate are ø0.64 (16.256 mm).
8) Remove fixture and drill and tap M16X2.0 Helicoil threaded insert holes in hull structure at
marked locations to mate with holes in the Seakeeper foundation. . Take special care to
drill perpendicular to mounting surface. A drill guide is recommended. Remove any
impeding obstructions.

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SEAKEEPER 3 90378 4 14 of 15
Section 1: MECHANICAL INSTALLATION
1.5.3 Installation of Seakeeper
6) Locate and position 4 isolation gaskets onto
foundation beams (for metal to metal contacts only).
NOTE: Sealant or caulk is recommended to be
applied. Apply a small bead (approximately 4 mm
wide) of sealant (silicone or caulk) between both
mating surfaces of each isolation gasket where it
contacts the beam and the Seakeeper. This will
prevent water from wicking between the parts and
setting up corrosion. Check isolation gasket
alignment by test fitting bolts without any
obstructions.
7) Lower Seakeeper into position onto the hull
foundation beams and align over drilled holes.
8) Install Seakeeper supplied M16 fasteners Or Grade
10.9, M16-2.0 bolts to maintain a minimum thread
engagement of .94 in (23.8 mm) – apply a moderate
coat of removable thread locker to the threads of
each bolt and include a small bead of sealant under each washer before installation.
9) Torque all fasteners to 135 ft-lbs (183 N-m). (revision 4 )
10)Proceed to electrical and cooling portion of the installation.
TORQUE TO 135 FT-LBS. 4X

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SEAKEEPER 3 90378 4 15 of 15
Section 1: MECHANICAL INSTALLATION
1.6 Removal and Disposal
1.6.1 Removal
This section details basic instructions for removal of a Seakeeper 3 from a boat. The overall
basic instructions are to reverse the installation instructions:
1) Disconnect seawater pump from heat exchanger and power connector on wiring
harness.
2) Drain heat exchanger of all seawater.
3) Disconnect both Seakeeper input power cables.
4) Remove all installation fasteners.
5) Remove the Seakeeper unit using a spreader bar.
1.6.2 Disposal
DO NOT disassemble the Seakeeper to a greater degree than necessary for removal from the
boat. DO NOT dispose of a Seakeeper unit in a landfill. The unit must be shipped back to
Seakeeper.

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SEAKEEPER 3 90378 4 1 of 12
Section 2: ELECTRICAL INSTALLATION
2.0 Introduction
This section for electrical installation explains how to mount the electrical equipment and how to
connect the electrical cables.
Reference Documents & Drawings
90388 Seakeeper 3 Hardware Scope of
Supply
90379 Seakeeper 3 Operation Manual
90377 Seakeeper 3 Cable Block Diagram
90438 Color Operator Display Envelope
and Mounting Details
SEAKEEPER 3, Front Oblique View SEAKEEPER 3, Rear Oblique View
12VDC Power Input Cable SW Pump DC Power Cable Terminator, Female Tee Adapter
Touch Screen Display 2ft Cable 10m Cable
FIGURE 1 – ELECTRICAL EQUIPMENT FOR SEAKEEPER 3

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SEAKEEPER 3 90378 4 2 of 12
Section 2: ELECTRICAL INSTALLATION
2.1 Electrical Equipment Mounting
Precautions
•Each item of electrical equipment has specific mounting instructions. These instructions
should be followed to insure proper function of the Seakeeper.
1. TOUCH DISPLAY MOUNTING INSTRUCTIONS, SURFACE MOUNT
a. Console space required: Approx. 5.24 W x 3.70 H inches (133 x 94 mm)
b. Mounting Instructions, Surface Mount: See drawing 90438 for details
2. CAN COMMUNICATIONS TEE ADAPTER AND TERMINATOR MOUNTING
INSTRUCTIONS
a. Console space required, Rear: Approx. 4 W x 3 H inches (102 x 76 mm), rear
b. Mounting Instructions: Rear mount on vessel console panel, within 2 ft (0.6m) of
Display.
c. Hardware required: One mounting screw for .197” (5 mm) diameter mounting
hole on Tee Adapter.
Do NOT move Seakeeper mounted components from their
locations or incorrect Seakeeper operation will result.

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SEAKEEPER 3 90378 4 3 of 12
Section 2: ELECTRICAL INSTALLATION
2.2 Electrical Equipment Power Connections
FIGURE 2 – SEAKEEPER 3 DC POWER INPUT & OUTPUT CONNECTIONS
1. HIGH CURRENT 12V POWER INPUT
a. HIGH CURRENT 12 VDC POWER SOURCE REQUIREMENTS
i. Source: Battery Bank, 12 VDC, Marine, Deep Cycle
ii. Alternate Source: Power Supply / Battery Charger, 12 VDC
iii. Voltage Range: 10 – 16 VDC
iv. Continuous Current: 75 Amps
v. Overcurrent Protection: 100 Amp (Customer Supplied)
b. HIGH CURRENT 12 VDC POWER CONNECTION INSTRUCTIONS
i. 2 AWG conductors to connect the high current DC input power are supplied as
length 4m. Approximately 1m is routed within the gyro frame.
ii. Conductor length may be increased, but changing from 2 AWG to larger
wire size does not allow longer length than 9m each. The length limit is
required to limit the inductance from the high current conductors.
iii. Use the shortest length and most direct route to the battery bank as possible.
iv. Bind plus (B+, Red) & minus (B-, Black) conductors together throughout entire
length and do not coil.
v. Connect plus conductor (B+, Red) through dedicated over-current protection
device (customer supplied) and a dedicated isolation switch (customer
supplied) then directly to battery plus terminal.
LOW CURRENT 12VDC
INPUT POWER
CONNECTOR
(LARGER)
HIGH CURRENT 12VDC INPUT
POWER CONDUCTORS
(2 AWG, RED & BLACK)
DC SEAWATER PUMP 12VDC
OUTPUT POWER
CONNECTOR
(SMALLER)