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.
Sent from my iPhone
using Cruisers Sailing Forum