Garmin offers multiple marine cartography products.  The most recent offering is Garmin Navionics+™ while the previous generation is called g3, which consists of BlueChart® g3 coastal charts and LakeVü g3 inland maps. Each of these products have a standard option and a Vision option available.

It is important to be aware that if used together, the Garmin Navionics+™ mapping on a chartplotter will be prioritized over g3 mapping in areas where their coverages overlap.

Examples: 

• A chartplotter with built-in Garmin Navionics+™ Built-In for Coastal North America, Canadian West Coast and Alaska, combined with a U.S., South Florida and North Bahamas Coastal Charts BlueChart® g3 Vision will not display the g3 Vision mapping because the built-in completely overlaps the g3 Vision card coverage

• A unit with built-in BlueChart® g3 U.S. and Western Canada Coastal Charts running a supplemental GN+ chart, such as Central America & Caribbean - Inland and Coastal Marine Charts Garmin Navionics Vision+™, will be able to view their built-in BlueChart® until the overlap occurs in Baja California.  The transition is seamless, and the unit automatically switches to pulling in the priority chart for the Garmin Navionics ™ Vision+ in the area that overlaps. 

• A chartplotter with built-in Garmin Navionics+™ US mapping, combined with a Europe Atlantic Coast g3 Vision Card will display the entire g3 Vision mapping region because the coverage of the two maps does not overlap.