Navionics cards offer free updates for the latest and greatest on the water info. I had to work late and had fishing plans for the next day, with that said my kids are light years ahead of me with technology. I received a text at work saying "the girls wanted to help daddy out with his fishing trip."
When I got home they had update my Navionics card with the latest and greatest info. I was one HAPPY DAD!!!
Updating cards is a fairly simple process everyone should take advantage of and also take advantage of uploading your own chart recordings.
ONE PROUD FATHER