Raymarine stand-alone master instrument - Manual (Page 15)

12 ST30 Bidata Operation and Installation Handbook
Depth
Speed
Speed and depth
Caution: Plastic through hull transducers must not be used on vessels
with wooden hulls.
Note: The ST30 Speed transducers are fitted with standard paddlewheels
designed for speeds up to 32 knots. For vessels that will exceed this
speed, please refer to section 2.3 which contains instructions on how to
fit the high speed paddlewheel (supplied).
Hull material or
location
Transducer
GRP, Steel, Aluminium Standard through hull
Wood Bronze (Z118)
GRP, Steel, Aluminium Retractable depth (Z120)
In hull In hull puck (Z117)
Hull material or
location
Boat speed Transducer
GRP, Steel, Aluminium Up to
32kts
Standard through
hull
GRP, Steel, Aluminium Up to
45kts
Standard and high
speed paddle
Wood Up to
45kts
Bronze (Z116)
Transom Up to
60kts
Transom mount with
bracket (Z119)
Hull material or
location
Transducer
Transom Biducer (Z183)