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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