Seakeeper 26 GYRO Installation Manual page 11

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 Gyro Bolt-In Installation Details. Important
dimensional and load information is given in this drawing that will impact the design details of the
structure that will receive the gyro. It is assumed that a proper structural analysis has been performed
for the hull structure to which the gyro will be fastened to insure proper strength margins for the loads
the gyro will create during operation.
The hull structure supporting the gyro should be installed so the gyro is parallel to the waterplane in the
port/starboard and forward/aft directions.
the isolation mounts will rest need to be co-planar within 1/8
distortion of gyro 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 gyro'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 gyro envelope
dimensions. Refer to Drawing No.
90271 for envelope dimensions. A 3-D
model of the gyro is available on the
Seakeeper website
(www.seakeeper.com) to aid in
designing the gyro foundation and the
space around the gyro.
Product:
INSTALLATION
MANUAL
SEAKEEPER 26 GYRO
In addition, the four areas on top of the beams on which
th
inch (3 mm) to minimize potential
Figure 5 – Exploded View of Installation Fixture
Document #: Rev:
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