Depth calibration ContentsDepth transducer offsetDepth is measured from the transducer face to the bottom (e.g.: seabed). An offset value can be applied to the depth data so that the displayed depth reading represents the depth reading taken from either the keel (negative offset) or the waterline (positive offset).Setting the depth offsetThe depth calibration consists of setting a depth offset that is relevant to your depth transducer’s location.Parent topic: Transducer calibrationPrevious topic: Transducer calibrationNext topic: Speed calibration