Do you have a question about the Garmin GPSMAP 235 Sounder and is the answer not in the manual?
Critical safety information and precautions for device operation.
Steps for GPS receiver setup and simulator mode.
Marking positions, creating basic routes, and using GOTO.
Adjusting depth range, zoom, and sounder sensitivity.
Configuring Fish ID, water temp, noise rejection, and frequency.
Creating, marking, editing, and listing waypoints.
Navigation methods and emergency features.
Building, editing, and managing routes and track logs.