Pages in the Environment dialog box
Environmental parameters such as salinity, sound speed and water temperature all play an important part to present accurate
echo data. Use the Environment parameters to define these values. Depending on the current sea and weather conditions, you may need to change these values frequently.
How to open
This dialog box is opened from the Setup menu.
Description
In order to obtain accurate depth readings and fish echoes, it is very important that the sound speed through the water is
set correctly. Several parameters are required to calculate the correct sound speed value. If these parameters are not known to you, use the default value 1494 m/s. This is a typical mean value for sound speed in salt water. In fresh water we suggest that you set the sound speed value to 1450 m/s.