Seakeeper 26 Bedienungsanleitung

Rev 7 MAR 2021

INSTALLATION MANUAL

*THIS MANUAL ALSO COVERS THE SEAKEEPER 20HD*

INSTALLATION

MANUAL

Product:

Document #:

Rev:

SEAKEEPER 26 / 20HD

90265

SEAKEEPER 26 / 20HD

INSTALLATION MANUAL

MARCH 2021

Contents:

Section 1 –Mechanical Installation &PC-120 Guide

Section 2 –Electrical Installation

Section 3 –Cooling Installation

Section 4 –Installation Supplies & Tools

Section 5 –Installation Checklist

45310 ABELL HOUSE LANE, SUITE 350

CALIFORNIA, MD 20619, U.S.A.

PHONE: 410-326-1590

FAX: 301-880-4585

E-MAIL: customerservice@seakeeper.com

INSTALLATION

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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 26. The Seakeeper can produce loads up to 35.89 KN (8,070 lbs.) at each

of the four mounts and careful consideration should be given to foundation design to ensure it can

transfer these loads into the hull. These loads do NOT include vessel motion accelerations, such

as vertical slam loads which can be significant for high speed performance vessels.

There are two methods of installing the Seakeeper 26:

1) Bolt-In Installation

2) Bond-In (Saddle) Installation

It is assumed that the installer is familiar with bonding using high strength adhesives or

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 he should contact a licensed naval architect

or marine engineer 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

•90244 Seakeeper 26 Hardware Scope of Supply

•90416 Seakeeper 20HD Hardware Scope of Supply

•90271 Seakeeper 26/20HD Installation Details –Bolt in Method

•90272 Seakeeper 26/20HD Installation Details –Bond in Method

•90085 Seakeeper 26/20HD Bond-in Saddle Kit

•90086 Seakeeper 26/20HD Bolt-In Installation Kit, M16, Through-Bolt

•90614 Seakeeper 26/20HD Bolt-In Installation Kit, M16, Blind-Hole

•90088 Seakeeper 26/20HD Bond-In Installation Fixture Kit

•90089 Seakeeper 26/20HD Bolt-In Installation Fixture Kit

•90310 Seakeeper 26/20HD Cable Block Diagram

•90320 Seakeeper 26/20HD Cooling Water Schematic

FIGURE 1 –SEAKEEPER 26

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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 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 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 replacement of gimbal angle sensor on gimbal shaft (see Figure 2).

•Clearance for filling / purging brake hydraulic oil (see Figure 2).

•Clearance for filling water/glycol cooling circuit (see Figure 2).

•Clearance for replacement of brake hydraulic cylinders (see Figure 2).

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Section 1: MECHANICAL INSTALLATION

VIEWS SHOWING RECOMMENDED CLEARANCES AROUND THE SEAKEEPER FOR USE OF HAND TOOLS,

EASE OF MAINTENANCE, INSTALLATION, AND PROPER OPERATION

FIGURE 2 –INSTALLED SEAKEEPER CLEARANCE CONSIDERATIONS

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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 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. The steady state noise is typically in the range of 70-75 dB 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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Section 1: MECHANICAL INSTALLATION

1.3 Selection of Installation Method

The Seakeeper 26 can be affixed to the hull structure using two methods shown below:

1) Bolt-In Installation

2) Bond-In (Saddle) Installation

OPTION 1 - DIRECT FASTENING OF SEAKEEPER FOUNDATION TO SHIPS STRUCTURE

Option 1 would be applied when a metal structure is available for attachment. The foundation

would fasten directly to hull structure using isolation gaskets and either M16 or 5/8” fasteners.

Depending on the structure to which the Seakeeper is fastened, blind threaded holes or thru-

bolting can be utilized.

OPTION 2 - SADDLE INSTALLATION (4 PLACES)

Option 2 would be commonly used on a hull constructed of glass reinforced plastic (GRP) or

fiberglass. For this option, four 16 inch (406 mm) long by 8 inch (203 mm) deep saddles are

bonded to properly spaced and prepared structural members that are an integral part of the hull

structure. Seakeeper recommends using a structural adhesive with a lap shear strength of 2000

psi (13.8 MPa) or greater such as Plexus MA590. Careful consideration should be exercised by

the installer while selecting the appropriate adhesive. Compatibility with the Seakeeper’s cast

aluminum A356-T6 saddles, hull structure and pot life are three important factors to consider.

Proper surface preparation in accordance with adhesive manufacturer’s recommendations prior

to installation is required.

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Section 1: MECHANICAL INSTALLATION

1.4 Unpacking Crate

1) Reference Seakeeper Drawing No. 90244 Seakeeper 26 Hardware Scope of Supply and

90416 Seakeeper 20HD Hardware Scope of Supply for items that ship with the

corresponding Seakeeper model.

2) Remove electrical components, cables, and misc. items and set aside.

3) Remove packing materials that secure Seakeeper assembly inside the crate.

4) Remove top and angled face cover panels to access lifting eyes.

5) Attach spreader bar to the two lifting eyes located on the top of the Seakeeper enclosure.

Stay clear of any other parts on the Seakeeper. See Figure 3 below.

6) The Seakeeper 26 weighs 1431 kg (3155 lbs).

FIGURE 4 –LIFTING ARRANGEMENT

Spreader Bar

Lifting Eyes

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Section 1: MECHANICAL INSTALLATION

1.5 Bolt-In Installation

1.5.1 Check and Preparation of Hull Structure

Refer to Seakeeper Drawing No. 90271, Seakeeper 26/20HD 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 ensure proper strength margins for the loads the Seakeeper will create during

operation.

Two bolt-in kits are available:

1) Through-Bolt, reference drawing 90086

2) Blind-Hole, reference drawing 90614

The hull structure supporting the Seakeeper should be installed so the Seakeeper is parallel to

the water plane in the port/starboard and forward/aft directions. In addition, the four areas on

top of the beams on which the isolation mounts will rest need to be co-planar within 1/8th

inch (3 mm) to minimize potential distortion of Seakeeper support frame when installed.

(Similar to Figure 9).

Seakeeper provides an installation fixture assembly, P/N 90089 that contains four plates that

mimic the mating surfaces of the four isolation mounts located on the Seakeeper’s foundation.

These plates have 8 holes located at the same centers as the holes in the isolation mounts. These

smaller holes can be used to locate the holes in the

ship’s structure through use of a transfer punch. The

fixture locates the hole patterns at the proper

spacing, both in the fore-aft direction and the port-

starboard direction. See Figures 5 & 6 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. 90271 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.

Figure 5 –Exploded View of Installation Fixture

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MANUAL

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Section 1: MECHANICAL INSTALLATION

FIGURE 6 –NOTICE FOR CHECKING SQUARE OF ASSEMBLY

Andere Handbücher für 26

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