You can record freely as you go about your day! For best sonar log recording, we suggest you keep your speed under 6 knots, although maximum logging speed may vary depending on which device you are using; perform a grid pattern where the distance between tracks is no more than 50 meters /150 feet; and save about every 30 minutes to reduce any risk of loss.
then MENU again
Scroll to Accessories,
then switch Screen Snapshot to On
Move up to Accessories and press left arrow to scroll to Setup,
then move down to User Mode and set it to Advanced
Inside Setup, move down to Local Time Zone and select your Time Zone (e.g. Rome is CET (UTC+1))
then EXIT again,
then tap VIEW until you see the Snapshot and Recording View (image should be similar to the screenshot beside)
move down to Pings Per Second and move left to set pings to 1
Move up to Start Recording and press right arrow to start recording your track
Just press EXIT to go back to the map. A red light will appear on the map
To stop recording, from the chart press MENU and then right arrow.
To go to the main page press EXIT,
then EXIT again
Plug the MSD/SD card out of your GPS chartplotter and plug it in your computer. If you want to know how to upload sonar logs from a Navionics Card, click here