Depth Speed Wind vmg compass
The Autohelm ST30, ST50 and ST50+ (plus) Speed,
Depth, Bidata or Tridata instrument are the
previous and similar instruments for the
Raymarine range multidata displays.
You also could have SD Marine Displays
same as ST50 Plus Autohelm displays.
Designed for above or below deck installation,
this instruments can be used as a stand-alone
master instrument or be set up to repeat
information from the SeaTalk bus.
The only problem with these old instruments
is the Autohelm equipment under repair, test,
calibration, installation or setting to work
and parts and components supplied are pretty
hard to find, replace or repair.
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