INSTALLATION
MANUAL
Section 1: MECHANICAL INSTALLATION
1.3 Selection of Installation Method
The Seakeeper 26 gyro can be affixed to the hull structure using two methods 1) Use bolt-in installation
or 2) saddle installation. See figures below.
OPTION 1- DIRECT FASTENING OF GYRO 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 gyro is fastened, blind threaded holes or thru-bolting can be utilized.
OPTION 2- SADDLE INSTALLATION (4 PLACES)
Option 2 would be most 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. Careful consideration should be exercised by the installer while selecting the appropriate
adhesive. Compatibility with the gyro’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 very important.
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