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Setting a Garmin Depth Finder to Fathoms
Most Garmin depth finders or chartplotters can select the measurement method like fathoms or feet.
STRIKER™ fishfinders | ECHOMAP™ Plus chartplotters | ECHOMAP™ UHD chartplotters: Select Settings > Units > System Units > Custom > Depth > Fathoms
ECHOMAP™ UHD2 chartplotters | ECHOMAP™ Ultra 2 chartplotters: Select Options > Settings > Preferences > Units > System Units > Custom > Depth > Fathoms
For current GPSMAP® chartplotters¹ : Select Options > Settings > Preferences > Units > System Units > Custom > Depth > Fathoms
1Legacy GPSMAP units have different menu steps. See the owner's manual for unit specific steps.