Simrad ES120-7C - REV D, Installation Manual, Page: 27 / 98

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3 Mount the hardware under the vessel’s hull.
Note
Make sure that the surface of the resulting installation is as smooth and streamlined
as possible. Mounting screws or bolts must not be extruding from the hull or from the
installation hardware. Make sure that the surface of the transducer face, the hull
plating and putty around the transducer is as even and smooth as possible. Obstructions
on these surfaces will create problems with turbulent flow, and may cause noise.
4 If relevant, allow the relevant maritime authority and/or classification society to inspect
and approve the design and installation.
Related topics
Installing the transducer, page 21
Installing the cable gland, page 25
Transducer installation principles, page 51
Where to install the transducer, page 70
Drawing file, page 77
204579 Dimensions ES120-7C with open ended cable, page 79
204675 Mounting ring ES120-7C, page 83
204677 Clamping ring ES120–7C, page 85
204678 Mounting arrangement ES120-7C, page 88
Mounting the transducer, page 33
Installing the cable gland
In order to secure the vessel’s watertight integrity, it is extremely important that the
transducer cable penetrates the ship’s hull in a safe manner. One suggested method is to
use a cable gland. The cable gland consists of a bushing, rubber gasket, washers and a
packing nipple.
Prerequisites
Before you can install bushing, the following prerequisites must be met:
• The transducer cable must be fitted with the rubber gasket, washers and packing nipple.
• The installation arrangement has been approved by the relevant authority.
• All relevant personnel (skilled shipyard workers, ships electricians) and relevant tools
must be available.
Installing the transducer