Navionics Chart Cards You will need to delete

You will need to delete all 16GB of data pre-loaded on the cards when you receive it because that is too much data for the older processors to handle

allowing you to plug it into your computer and delete the data on it via Navionics online portal

Any more and the system is unlikely to run normally

it will allow you to reload whatever areas in the US or Canada you desire

Navionics Chart Cards You will need to deleteAre your Navionics charts outdated? We recommend that you buy a new chart card about every five years for updated maps and safety information. IMPORTANT: Compact Flash Cards have been discontinued by Navionics are no longer available in that format, only SD and MicroSD. The only option for getting updated charts on a Compact Flash Card is to purchase an "upgrade" version. You must have an existing eligible Navionics chart card already to do this and