2.1 Mechanical Installation Introduction

The Seakeeper 9 is capable of producing loads up to 3,842 lbs (17.09 kN) at each of the four mounts. These forces should be considered to be acting simultaneously, fully reversing, and will repeat an infinite number of times. Careful consideration should be given to foundation design to ensure it is capable of transferring these loads into the hull. These loads do NOT include vessel motion accelerations, such as vertical slam loads which can be high for higher speed vessels. The responsible party for designing the supporting structure (boat builder, installer, or hired sub- contractor) must accommodate the above forces plus a reasonable factor of safety. Seakeeper recommends a minimum safety factor of 3.0 (yielding a Safety Margin of 2.0).

There are two methods of installing the Seakeeper 9:
1. Bolt-In Installation
2. Bond-In Installation

It is assumed that the installer is familiar with installing mechanical fasteners in marine structures or using high strength adhesives on aluminum and fiberglass (FRP), 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 a licensed naval architect or marine engineer should be contacted to perform a structural analysis.

The installer should review the following list of reference drawings to ensure the installation procedure is fully understood.

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Reference Documents & Drawings:

• 90225 – Seakeeper 9 Installation Details – Bolt in Method
• 90226 – Seakeeper 9 Installation Details – Bond in Method
• 90253 – Seakeeper 9 Installation Template Kit
• 90384 – Seakeeper 9 Generic Installation Guide
• 90331 – Seakeeper 9 Bolt in Clearances
• 90642 – Seakeeper 9 Bolt-in Kit
• 90643 – Seakeeper 9 Thru-Bolt Kit