bigbruce
Crew Member
I've got a Garmin 721 Chart/Sounder with an Airmar b60 through hull transducer. Worked fine last year, and I've updated the firmware. Just back from a trip to Tahsis and kept losing the bottom. It worked fine at low speed, but as soon as i got up on the step and into deep water, the depth reading would start to flash and not read properly. Once I stopped, it wouldn't read depth properly until I shut it off and restarted.
Any advice would be appreciated.
Any advice would be appreciated.