Seakeeper 1 User manual

MAY 2020, Revision 1
INSTALLATION MANUAL

INSTALLATION
MANUAL
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SEAKEEPER 1
INSTALLATION MANUAL
MAY 2020
CONTENTS PAGE
Section 1: Mechanical Installation…………………………2 – 9
Section 2 – Electrical Installation…………………………..10 – 20
Section 3 – Cooling Installation…………………………….21 – 24
Section 4 – Installation Requirements…………………….25 – 26
Section 5 – Installation and Start-Up Checklist………….27 – 29
45310 Abell House Lane, Suite 350
California, MD 20619
PHONE: [phone]
FAX: [phone]
E-MAIL: [email protected]

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Section 1: MECHANICAL INSTALLATION
1.0 INTRODUCTION
This document is intended to give details and guidance for a boat builder or equipment installer to
properly install the Seakeeper 1. The Seakeeper 1 can produce forces of up to 1,515 lbs. (6.74 KN) in
the vertical direction, 2,248 lbs. (10.0 KN) in the longitudinal direction, and 1,697 lbs. (7.55 KN) in the
lateral direction at each of the four mounts. Careful consideration should be given to foundation
design to ensure it is capable of safely transferring these loads into the hull. These loads represent a
worst-case operating condition that includes a 6G acceleration evaluated in each direction
independently. The responsible party for designing the supporting structure (boat builder, installer,
or hired sub-contractor) must accommodate the above forces plus a reasonable factor of safety.
Seakeeper recommends a minimum safety factor of 2.0 (yielding a safety margin of 2.0).
It is assumed that the installer is familiar with mounting using mechanical fasteners to marine
structures and has performed structural analysis to ensure the structure to which the Seakeeper
mounts can properly transfer the loads the Seakeeper exerts into the hull structure. If the installer
has any doubt about the ability of the structure to transfer the loads to the hull, then the installer
should contact a licensed naval architect or engineer to perform a structural analysis.
The installer should review the following list of reference drawings to ensure the mechanical
installation procedure is fully understood.
Reference Documents & Drawings:
• 90510 –Seakeeper 1 Hardware Scope of Supply
• 90515 –Seakeeper 1 Crate Unpacking Instructions
• 90516 –Seakeeper 1 Bolt-in Installation Details
• 90514 –Seakeeper 1 Bolt-in Clearances
• 90559 –Seakeeper 1 Generic Installation Guide
• 90517 –Seakeeper 1 Installation Fixture Kit
Figure 1: Seakeeper 1 Components –Isometric (left) / Top-Down (right)

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1.1 PRECAUTIONS
1. The Seakeeper must only be lifted from the supplied lifting eyes (see Section 1.3).
2. The Seakeeper flywheel is supported by precision bearings. While unpacking and lifting the
Seakeeper assembly, DO NOT drop or impart mechanical shock as damage to bearings could
result.
3. 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.
4. Exercise care to protect any exposed surfaces as damage to finish could lead to early
appearance degradation of the Seakeeper.
1.2 SELECTION OF SEAKEEPER INSTALLATION LOCATION
Selection of mounting location of the Seakeeper should consider the following desirable features:
1. 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.
2. Top-down access or sufficient clearance for access and removal of the Seakeeper 1 cover is
required. See drawings 90516 –Seakeeper 1 Bolt-In Installation Details and 90514 –Seakeeper
1 Bolt-in Clearances for reference.
3. Provide adequate clearance for all recommended scheduled maintenance and any repairs
that may be necessary, as shown in Figure 3 and Drawing No. 90516.
4. Access for the removal and re-installation of the Seakeeper 1 should be considered.
5. The Seakeeper should be installed in a dry space to minimize effects of corrosion.
Figure 2 : Seakeeper 1 Overall Dimensions (Drawing No. 90516)

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Figure 3: Seakeeper 1 Service and Operating Clearances (Drawing No. 90516)
Note: Adequate access to remove the Seakeeper 1 cover must be incorporated into the installation
design to allow for regular maintenance, service, and repair of components.
1.2.1 SAFETY
There is a large torque about the gimbal axis when the Seakeeper is precessing. The Seakeeper 1
enclosure is 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 only be performed by authorized personnel when
the Seakeeper is locked and the flywheel has stopped spinning.
1.2.2 NOISE / SOUNDPROOFING
Seakeeper noise has been measured under steady state conditions (no wave load) in Seakeeper's
Engineering Lab and in our Factory Demo Boat. The steady state noise at 1 meter is typically in the
range of 62-64 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 an enclosed space
such as a leaning post / seat, bilge, center console, or machinery space.

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Section 1: MECHANICAL INSTALLATION
1.3 TRANSPORT AND UNPACKING
Reference Drawings:
• 90510 –Seakeeper 1 Hardware Scope of Supply
• 90515 –Seakeeper 1 Crate Unpacking Instructions
• 90516 –Seakeeper 1 Bolt-In Installation Details
1.3.1 TRANSPORT
1. Use a Seakeeper-provided shipping crate for transport, part number 12098. The overall
dimensions of a fully-packed Seakeeper 1 crate are 27.5”L x 27.5”W x 23.25”H (0.70 L x 0.70
W x 0.60 H m) with a weight of 430 lbs (195 kg), including accessories.
2. Do not stack Seakeeper shipping crates.
3. Both air and ground transport are acceptable and available through Seakeeper.
4. Seakeeper shipping crates must be transported in environmental conditions between -20°C
and 60°C.
1.3.2 UNPACKING CRATE
Reference Seakeeper 1 Crate Unpacking Instructions (90515) for detailed unpacking instructions.
Once the Seakeeper 1 crate has been unpacked, follow these instructions when lifting the unit:
1. Remove and set aside cover, electrical components, cables, and misc. items.
2. Attach Small Gyro Lifting Bar Kit (Seakeeper P/N 11766) to the two lifting eyes located on the
top of the Seakeeper enclosure.
a. Stay clear of the Seakeeper 1 when the unit being lifted and use safe practices for working
under a suspended load. The Seakeeper 1 weighs 365 lb. (165 kg).
3. See Figure 4 for proper lifting arrangement. Additional details can be found in the Seakeeper
1 Bolt-In Installation Details (90516).
4. Remove lifting eyes once unit is installed. Lifting eyes must be removed prior to operation.
Figure 4: Seakeeper 1 Lifting Arrangement

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Section 1: MECHANICAL INSTALLATION
1.4 MECHANICAL INSTALLATION
Reference Drawings:
• 90559 –Seakeeper 1 Generic Installation Guide
• 90516 –Seakeeper 1 Bolt-In Installation Details
• 90517 –Seakeeper 1 Installation Fixture Kit
• 90599 –Seakeeper 1 Bolt-In Kit
1.4.1 PREPARATION OF VESSEL STRUCTURE
The Seakeeper 1 Generic Installation Guide (90559) shows various structural arrangements to support
the integration of the Seakeeper 1. The Generic Installation Guide offers above and below deck
installation arrangements with fiber-reinforced plastic (FRP) and aluminum structures, which should
provide solutions for most vessels. Depending on the structure to which the Seakeeper is fastened,
blind threaded holes or through-bolting can be utilized. The Seakeeper 1 is affixed to the hull via four
bolts in the Seakeeper 1 frame. Each Seakeeper 1 foundation bolt has a vibration isolation assembly
to minimize the transmission of vibrations to the hull structure.
Refer to Seakeeper Drawing No. 90516 –Seakeeper 1 Bolt-In Installation Details. This drawing contains
critical design dimensions and loads that must be considered in the design of the boat’s structure that
will receive the Seakeeper 1. It is assumed that a proper structural analysis has been performed for
the vessel structure to which the Seakeeper will be fastened to ensure proper strength margins for
the loads the Seakeeper will create during operation.
The vessel structure supporting the Seakeeper should be installed so the Seakeeper is parallel to the
waterline in the transverse direction and within 2 degrees longitudinally. In addition, the four areas
on top of the structure on which the Seakeeper 1 will rest need to be co-planar within .06” (1.5 mm)
to minimize potential distortion of Seakeeper isolation mounts when installed.
Seakeeper offers an installation fixture kit, P/N 90517. The fixture has 4 holes located at the same
centers as the mounting holes on the Seakeeper 1. The fixture locates the hole patterns at the proper
spacing both in the fore-aft direction and the port-starboard direction. See Figure 5 for more details
regarding the Seakeeper 1 template.
Note: Do NOT use the installation fixture to establish the Seakeeper envelope dimensions or
clearances. Refer to Drawing No. 90516 –Seakeeper 1 Bolt-In Installation Guide –for envelope
dimensions. A 3-D model of the Seakeeper 1 is available on the Seakeeper website
(https://www.seakeeper.com/technical-library/) to aid in designing the Seakeeper foundation and the
space around the Seakeeper.

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Figure 5: Seakeeper 1 Fixture Kit (P/N 90517)
1.4.2 TRANSFER OF HOLES TO BOAT STRUCTURE
The following instructions should be used to establish the Seakeeper 1 bolt pattern on the hull
structure that has been designed to accept the Seakeeper 1, based on the information provided in
Drawing Nos. 90599 and 90516.
1. Lower installation fixture onto vessel structure.
2. The four Isolation Mounts, where the Seakeeper 1 contacts the hull structure, must be
coplanar to within 0.06 in (1.5 mm).
3. Align fixture in desired location and transfer holes from fixture plate to the vessel structure
by transfer punch. Note that holes in fixture plate are ø9/16” (14.287mm).
4. Using the bushings in the fixture holes as a guide to stay perpendicular with the vessel
structure, drill 4 X 9/16” diameter holes for M14 x 2.0 1.5xDIA (21mm length minimum)
threaded inserts in vessel structure at marked locations to mate with holes in the Seakeeper
foundation.
5. Tap threads in holes for M14 x 2.0 1.5xDIA threaded inserts.
Figure 6: Stainless Steel Threaded Insert Details
6. Install threaded inserts into holes using Helicoil installation tool.
7. Remove threaded insert prongs after threaded inserts are installed.

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1.4.3 INSTALLATION OF SEAKEEPER
1. Locate and position the lower snubbing washers onto vessel foundation structure at each of
the 4 hole locations.
a. NOTE: Sealant or caulk is recommended to be applied around the outside edge of the
lower face of each lower snubbing washer, where it contacts the vessel structure. This will
maintain the position of the snubbing washer and prevent water from wicking between
the parts and setting up corrosion.
b. Sealant is not required between the snubbing washer faces and isolator bushings.
2. Lower the Seakeeper 1 onto the lower snubbing washer on the vessel structure and align over
drilled holes.
Figure 7: Seakeeper 1 Installation
3. Using a flexible extendable magnet (McMaster P/N: 3838A42 or similar), install the Seakeeper
1 Bolt-In Kit –P/N 90599: isolator mount sleeve tube, upper snubbing washer, wedge-lock
washer, and bolt at each isolation mount.
a. Figure 8 shows an exploded view of the Bolt-In Kit.
b. Before installation, apply a moderate coat of anti-seize to the threads of each bolt.
c. The upper snubbing washer, wedge-lock washer, and M14 Bolt can be stacked as one
assembly by attaching the magnet to the snubbing washer.
4. Torque all fasteners to 115 ft-lbs. (156 N-m). New bolts must be used for each installation and
reinstallation.
a. Threaded inserts can be reused if they are found to be intact and without damage.

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Figure 8: Seakeeper 1 Bolt Stack Arrangement Exploded (left) / Installed (right) (P/N 90599)

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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:
• 90510 – Seakeeper 1 Hardware Scope of Supply
• 90511 – Seakeeper 1 Cable Block Diagram
• 90512 – Seakeeper 1 Cooling Water Schematic
• TB 90191 – Seawater Cooling Pump Recommendations
• TB 90573 – Seakeeper 1 Display Options
o TB 90478 – Garmin and Seakeeper Compatibility
o TB 90479 – Raymarine and Seakeeper Compatibility
o TB 90480 – Simrad and Seakeeper Compatibility
o 90600 – Seakeeper 1, 5” Touch Display
Figure 1: Seakeeper 1 Isometric View with Electrical Connections

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Section 2: ELECTRICAL INSTALLATION
2.1 ELECTRICAL EQUIPMENT CONNECTIONS
Reference Documents & Drawings:
• 90510 – Seakeeper 1 Hardware Scope of Supply
• 90511 – Seakeeper 1 Cable Block Diagram
The following figures show the electrical equipment included with the Seakeeper 1 Hardware Scope
of Supply (Dwg No. 90510):
Figure 2: ConnectBox Figure 3: Cable 1 & 2, 2AWG, 12VDC Input / Cable 6, 4AWG Ground
Figure 4: Cable 7, 2x16AWG, Pump Pwr Input Figure 5: Cable 5, 2x16AWG, Pump Pwr Output
Figure 6: Cable 4, CAN, 0.6 m Figure 7: Tee Adapter Figure 8: Terminator
Figure 9: Cable 11, NMEA, 6 m Figure 10: Cable 10, D-Code, 10 m

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2.2 HIGH CURRENT 12 VDC CONNECTION
Reference Documents & Drawings:
• 90511 – Seakeeper 1 Cable Block Diagram
2.2.1 HIGH CURRENT 12 VDC POWER SOURCE REQUIREMENTS:
1. Source: Battery Bank, 12 VDC, Marine, Deep Cycle
2. Voltage Range: 11.3 – 16 VDC
3. Continuous Current: 55 A
4. Overcurrent Protection: 80 A (Customer-Supplied)
2.2.2 HIGH CURRENT 12 VDC POWER CONNECTION INSTRUCTIONS
1. CABLE 1 and CABLE 2, 2AWG conductors, connect to the high current DC input power are
supplied as length 0.35m. Approximately 0.1m is routed within the gyro frame.
2. Customer-supplied 2AWG cables must be spliced in series in accordance with the Crimping
Instructions in Drawing No. 90511, using Seakeeper-supplied butt connectors, to increase to
desired length. The maximum cable length is 9.0 m each.
a. The Crimping Instructions per Drawing No. 90511 are shown in the following figure.
3. Crimp CABLE 1 to B+ Conductor (red). Conductor should be continuous throughout entire
length; do not coil. The most direct route to the 12VDC Power source should be used.
a. Repeat Step 3 for CABLE 2 to B- Conductor (black).
b. Install approximately 2” (51 mm) of double wall (adhesive lined) heat shrink tubing over
entire butt connector and onto both sides of conductor insulation.
4. Connect plus conductor (B+, Red) through dedicated 80A overcurrent protection device
(customer-supplied) and a dedicated isolation switch (customer-supplied), then directly to
battery plus terminal or bus bar.
5. Connect minus conductor (B-, Black) directly to battery minus terminal or DC negative bus.
Figure 11: Seakeeper 1 Cable Block Diagram (Dwg No. 90511) – High Current Connection

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Reversing polarity on the DC power input to the Seakeeper can result in damaging
the electronics in the control system.
Figure 12: High Current DC Input Crimping Instructions (Dwg no. 90511)
2.3 SEAWATER PUMP CONNECTION INSTRUCTIONS
Reference Documents & Drawings:
• 90511 – Seakeeper 1 Cable Block Diagram
• 90512 – Seakeeper 1 Cooling Water Schematic
2.3.1 SEAWATER PUMP 12 VDC POWER SOURCE REQUIREMENTS
1. Power Source: Battery Bank, 12 VDC, Marine, Deep Cycle
2. Voltage Range: 10 – 16 VDC
3. Current Rating: Max 15A rating
4. Overcurrent Protection: Per pump specification, max 15A
2.3.2 SEAWATER PUMP 12 VDC POWER INPUT CONNECTION INSTRUCTIONS
5.
1. Connect CABLE 7 (P/N: 30327) to Seakeeper 1 “SW Pump DC In” as shown in Drawing No. 90511
with overcurrent protection corresponding to seawater pump selected.
2. Connect the 14AWG plus conductor (red) through dedicated overcurrent protection device
(customer-supplied), maximum of 15A, to dedicated battery isolation switch.
a. The CABLE 1, 2AWG B+ conductor (red), is capable of carrying the current for both the High
Current and Seawater Pump from the 12VDC power supply to the battery isolation switch.
3. Connect the 14 AWG minus conductor (black) directly to battery minus terminal or DC main
negative bus.

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Figure 13: Seakeeper 1 Cable Block Diagram (Dwg No. 90511) – Seawater Input
2.3.3 SEAWATER PUMP 12 VDC POWER OUTPUT CONNECTION INSTRUCTIONS
1. Connect CABLE 5 to the Seakeeper 1 “SW Pump 12VDC Out” for DC power output to the
seawater pump. CABLE 5 is a 2 x 16AWG cable, 16 ft (5m) length, with a size 16 female Deutsch
plug.
2. Pumps rated at 12 VDC, 15 amps maximum, customer-supplied, must be configured with a
Deutsch DT series, 2-pin receptacle to mate with the connector shown in the following Figure.
Figure 14: CABLE 5 - Seawater Pump Deutsch Connector
3. CABLE 5 must be routed and installed in the vessel from the Seakeeper 1 “SW Pump 12VDC
Out” Deutsch connector (pins end) to the DC seawater pump cable Deutsch connector (socket
end).
a. Connect CABLE 5 plug end (socket end) to the customer-supplied receptacle end (pins
end). The recommended wiring is shown in the following Figure.
4. Seakeeper DC Seawater Pump Assembly (P/N 30331), which is prewired for Cable 5, is
available as an option with the Seakeeper 1.
Figure 15: CABLE 5 - Seawater Pump

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2.4 ELECTRICAL EQUIPMENT GROUND CONNECTIONS
Reference Drawings:
• 90511 – Seakeeper 1 Cable Block Diagram
2.4.1 SEAKEEPER 1 TO VESSEL GROUND CONNECTION INSTRUCTIONS
1. Connect CABLE 6, 4AWG, PE cable to vessel grounding bus to comply with:
a. EM/IEC 60204-1 Clauses 6.3.3 and 8.2.3.
b. ABYC E-11 July 2018 Clauses 11.5.2 and 11.16.1.
2. Butt splice CABLE 6, 4AWG (green) to a 4 AWG ground wire (customer-supplied) suitable in
length for the specific installation, as shown in the following Figure.
a. Note: CABLE 6 (GREEN) SHOULD ONLY BE USED FOR GROUNDING THE SEAKEEPER TO THE
VESSEL GROUND.
Figure 16: CABLE 6, Ground Wire
Figure 17: CABLE 6, Ground Wire Connection (Drawing No. 90511)

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2.5 SEAKEEPER 1 DISPLAY CONNECTION
Reference Drawings:
• 90511 – Seakeeper 1 Cable Block Diagram
• TB 90573 – Seakeeper 1 Display Options
o TB 90478 – Garmin and Seakeeper Compatibility
o TB 90479 – Raymarine and Seakeeper Compatibility
o TB 90480 – Simrad and Seakeeper Compatibility
o 90600 – Seakeeper 1, 5” Touch Display
2.5.1 SEAKEEPER 1 DISPLAY OPTIONS
The Seakeeper 1 has two options for establishing a Seakeeper display interface to support the
Seakeeper App, as outline in TB 90573:
1. Connect the Seakeeper 1 to a compatible Multifunction Display (MFD).
2. Install an optional Seakeeper 5” Touch Display.
A Seakeeper display is required with the installation of a Seakeeper 1 to support the full functionality
of the unit through the Seakeeper App in addition to the ConnectBox. The Seakeeper App provides an
interface for controlling the Seakeeper 1 or viewing the Settings, Service, Info, and Alarm pages. The
Seakeeper ConnectBox can be helm-mounted to provide an additional interface for the control of the
Seakeeper 1 but does not replace the need for a Seakeeper compatible display.
The following Figure provides a schematic of the two display options. The subsequent sections outline
the instructions and references for connecting the Seakeeper 1 to each of these display options.
Figure 18: Seakeeper 1 Display Options (Drawing No. 90511)

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2.5.2 CONNECTING TO AN OPTIONAL COMPATIBLE MFD
1. The Seakeeper 1 can be connected to a variety of available MFD systems. Refer to the
Technical Bulletins Section of the Seakeeper Technical Library for manufacturer specific MFD
compatibility technical bulletins.
a. MFD specific Technical Bulletins will be updated regularly as new MFD systems become
compatible. Currently GARMIN, RAYMARINE, and SIMRAD offer compatible MFD models.
b. Once a compatible MFD has been selected, refer to the appropriate manufacturer specific
Technical Bulletin for integration instructions.
2. Connect Seakeeper-supplied CABLE 10, D-Code 10 m cable to MFD manufacturer-specific
Ethernet adapter cable. Custom Ethernet cables for specific MFD manufacturers are available
through Seakeeper and must be purchased with the Seakeeper 1 if connecting to an MFD.
Figure 19: ConnectBox to MFD Connection
2.5.3 CONNECTING TO AN OPTIONAL SEAKEEPER 5” TOUCH DISPLAY
If not utilizing a compatible MFD display, a Seakeeper 5” Touch Display must be purchased from
Seakeeper. The Seakeeper 5” Touch Display (P/N 90600) includes the components shown in the
following Figure and will be integrated with the ConnectBox.
Figure 20: Seakeeper 5" Touch Display Components (P/N 90600)

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1. Determine location of Seakeeper 5” Touch Display:
a. The desired location of the 5” Touch Display must be determined with respect to the
vessel’s arrangement.
b. The 5” Touch Display should be located on or near the helm or another easily accessible
location.
2. Route CAN communications cable:
a. The CAN Cable Assembly, CABLE 3, is a 10 m shielded cable that connects the ConnectBox
to the 5” Touch Display.
CABLE 3 must be routed and installed in the vessel from the Seakeeper wire harness CAN
Tee to the Tee Adapter at the Seakeeper 5” touch display, included with P/N 90600.
3. Install Seakeeper 5” Touch Display equipment:
a. Console space required: Approx. 5.24” W x 3.70 H” (133 x 94 mm)
b. Mounting Instructions, Surface Mount: see Envelope and Mounting Details, 5” Touch
Display (90438) for details.
4. 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.
5. Connect Seakeeper 5” Touch Display Equipment:
a. The Seakeeper 5” Touch Display is connected in accordance with Drawing No. 90511, as
shown in the following Figure.
Figure 21: Seakeeper 5” Touch Display Connection (Drawing No. 90511)

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2.6 SEAKEEPER 1 NMEA 2000 NETWORK CONNECTION
The Seakeeper 1 requires a connection to the vessel’s NMEA 2000 network backbone. The Seakeeper
1 will monitor information on the NMEA network to support and optimize the performance of the
Seakeeper 1.
1. Connect Seakeeper-supplied CABLE 11 to the customer-supplied NMEA 2000 tee adapter on
vessel’s NMEA 2000 backbone.
a. An active NMEA 2000 compatible GPS signal is required on the vessel’s NMEA 2000
backbone to operate the Seakeeper 1.
i. If no GPS signal is detected, a warning will be present on the Seakeeper App.
Figure 22: ConnectBox to NMEA 2000 Network Connection (Drawing No. 90511)