Select your product to confirm this information applies to you
Frequency of Garmin Navionics+, BlueChart g3 and LakeVu g3 Updates
Garmin Navionics+™ charts, BlueChart® g3 charts, and LakeVü ™ g3 charts are periodically updated. Garmin Navionics+ subscriptions are updated daily. Garmin Navionics+ preprogrammed cards are updated once a quarter. BlueChart g3 and LakeVu g3 are updated once per year.
Currently these charts are available on preprogrammed micro/SD cards, or as a download from Garmin’s website or the ActiveCaptain® App.