12.1 Fishfinder introduction
Warning: Sonar operation
• NEVER operate the sounder with the boat out of the water.
•NEVER touch the transducer face when the sounder is powered on.
•SWITCH OFF the sounder if divers are likely to be within 25 ft (5 m) of the transducer.
Fishfinder screen
The fishfinder displays a scrolling image of the seabed, updating from the right as your vessel makes progress.
Example fishfinder screen
Fishfinder overview
The fishfinder application provides a detailed view of the fish and seabed under your vessel, enabling you to accurately distinguish between different sizes of fish, bottom structure, and underwater obstacles. The standard fishfinder image is a historical, scrolling bottom graph with range and sonar frequency automatically selected by the system.
The various functions and features of the fishfinder application include:
•Preset modes for easy optimal operation.
•Display modes (Zoom,
•Adjustable range and zoom.
•Finding bottom feeding fish with the bottom lock display mode.
•Clutter and gain options to simplify the image.
•Pausing and adjusting the speed of the scrolling image.
•Using waypoints to mark a position.
•Determining depths and distances of targets.
•Fishfinder alarms (fish, depth or water temperature).
The fishfinder window includes the following aspects:
•The bottom together with any bottom structure such as reefs and shipwrecks etc.
•Target images indicating fish.
•A status bar noting the frequency and gain settings.
•The bottom depth.
Status icon
The fishfinder status icon is located in the
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