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Old 13-06-2015, 10:07   #1
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Raymarine ST60 depth sounder erratic behaviour


On a recently diver cleaned bottom, our depth sounder is erratically going from 200 ft to 75, 15, 2 them back to 115-200. Charts are clearly indicating 200+ ft depth. It behaves in gradual incline channels ...

We checked wiring, reset the negative offset properly, sensibility 12 (factory setting out of 15).

Is this normal behaviour given ferry wash, thermal layers of water...or are we due for a new transducer ?

Any other testing scenarios with the boat in the water?

Our handheld depth sounder confirms the "regular" readings of the ST60.

Cheers, Ben
NWP Area

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depth, depth sounder, marine, raymarine

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