381298/C
91
Designing, manufacturing and mounting the installation
blister or keel box
Once the physical location of the transducer has been determined, the installation blister
or keel box must be designed, manufactured and mounted.
Prerequisites
In order to do this task, the following prerequisites must be met.
• All relevant vessel and transducer drawings must be available.
• All relevant work instructions, procedures and standards must be available.
• All relevant drawings have been approved by the classification society.
• The physical location of the transducer has been determined.
• The installation method has been determined.
• The installation angles of the transducer have been defined.
• All relevant personnel (naval architects, designers, skilled shipyard workers) and
tools must be available.
You must be equipped with a standard set of tools. This tool set must comprise the
normal tools for mechanical tasks, such as different screwdriver types, pliers, adjustable
spanners and wrenches. Each tool must be provided in various sizes. We recommend
that all tools are demagnetized to protect your equipment. Depending on the tasks at
hand, additional tools may be required. Observe the relevant rules and regulations related
to welding. The quality of the welding is critical to the safety of the vessel. Welding
must only be done by a certified welder.
Context
The installation shipyard must provide all necessary design and installation drawings,
as well as the relevant work standards and mounting procedures. If required, all
documents provided by the shipyard for the physical installation of the SN90 must be
approved by the vessel’s national registry and corresponding maritime authority and/or
classification society. Such approval must be obtained before the installation can begin.
The shipowner and shipyard doing the installation are responsible for obtaining and
paying for such approval.
The outline dimensions of the SN90 transducer and the relevant installation items are
found in the
Drawing file
chapter in this manual.
End user manuals and source drawings (normally in AutoCad format) can be downloaded
from our website.
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Summary of Contents for Simrad SN90
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