6-1-12 Section 6: Installation
ST290 Instrument System Owner’s Handbook
Speed and Depth
A wide range of through-hull Speed and Depth transducers are available,
suitable for GRP, steel and aluminum hulled vessels (see Table 1-2 ).
Please consult your Raymarine dealer for advice on the most appropriate
transducer type for your vessel.
Figure 1-7: Typical plastic through hull transducer dimensions
Siting
Speed and Depth transducers should be sited within the clear water flow
areas indicated by the shaded areas in Figure 1-8 .
Table 1-2: Summary of transducer types
Hull material Speed transducer Depth transducer
GRP M78712 Through hull plastic M78713 Through hull plastic or
M78718 Retractable through hull.
Steel M78712 Through hull plastic M78713 Through hull plastic or
M78718 Retractable through hull.
Aluminium M78712 Through hull plastic M78713 Through hull plastic or
M78718 Retractable through hull.
Wood M78716 Through hull bronze M78714 Through hull bronze
0.57 in.
(14 mm)
2.94 in. (75 mm)
diameter
2.0 in. (51 mm)
diameter
2.94 in. (75 mm)
diameter
0.19 in.
(5 mm)
2.0 in. (51 mm)
diameter
3.95 in.
(100 mm)
2.94 in. (75 mm)
diameter
2.94 in. (75 mm)
diameter
3.50 in. (89 mm)
Depth
Speed
D5662-1
81183_2 S6.book Page 12 Wednesday, May 7, 2003 11:27 AM
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