Humminbird 596C HD DI - Manual (Page 85)

76 Setup Menu Tab
Depth Offset
(Advanced)
Settings: -10.0 to +10.0 ft, or -3 to 3 m [International
Models only]; Default = 0
Depth Offset will adjust the digital depth readout to indicate depth from the
waterline or boat's keel. Enter a positive vertical measurement from the
transducer to the waterline to read the depth from the waterline. Enter a
negative vertical measurement from the transducer to keel to read the depth
from the keel.
Default Sonar View Customized Sonar View
NOTE: The availability of the digital readout information corresponds with the view
selected and the accessory attached.