Site Requirements; Transducer - Raymarine ST40 Depth Instrument Owner's Handbook Manual

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Chapter 3: Installation
Note: If you intend fitting a nonstandard transducer, extra tools may
be required

Site requirements

Transducer

The transducer types required for the various hull types are as follows:
Hull material
Glass reinforced plastic (GRP)
Steel
Aluminium
Wood
Other transducer types are also available for specific requirements. For
further details, contact your local Raymarine dealer.
Plastic through-hull depth transducer dimensions
57 mm
(2.25 in)
51 mm
(2.0 in)
D4643-1
75 mm (2.94 in)
diameter
51 mm (2.0 in)
diameter
75 mm (2.94 in)
5mm (0.19 in)
diameter
Transducer type
M78713 Through hull plastic
(supplied as standard) or
M78718 Retractable through hull
M78714 Through hull bronze
13
D4445-2

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