(DG) ST 60 speed

[Derek - Raymarine - Moderator]

Hi Conrad,

Thank you for your enquiry.

The speed transducer can be tested as per this link as you can see there should be four magnets active in the paddlewheel. If the paddlewheel is defective, then a service kit can be purchased from our approved dealers.

if the problem persists, then further tests on the transducer can be carried out described here .

If the replacement transducer still under reads, check there is no fouling under the boat which is affecting the water flow across the transducer, also have you checked the calibration? click here .
regards