INSTALLATION
MANUAL
Product:
Document #:
Rev:
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SEAKEEPER 9 / 7HD
90222
6
6 of 20
Section 1: MECHANICAL INSTALLATION
1.3 Selection of Installation Method
The Seakeeper 9 can be affixed to the hull structure using two methods 1) Bolt-In installation
or 2) Bond-In (Saddle) installation. See figures below.
OPTION 1- DIRECT FASTENING OF SEAKEEPER FOUNDATION TO SHIPS STRUCTURE
Option 1 would be applied when a metal structure or laminated metal plates are available for
attachment. The foundation would fasten directly to hull structure or plates using isolation
gaskets for metal to metal contacts and 16x M14X2.0 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 most commonly used on a hull constructed of glass reinforced plastic (GRP)
or fiberglass. For this option, four 11 inch (280 mm) long by 4 inch( (102 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 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
very important.
