Please note: GARMIN mapping units come with built-in, permanent basemaps that cannot be altered. These basemaps come in a variety of global designations (ie., Atlantic basemap). Please see your local dealer when purchasing a GARMIN mapping unit to ensure that you purchase one with a basemap that's appropriate for your location and needs. Factory-installed basemaps cannot be altered.

The Worldwide Marine basemap includes worldwide coverage of the continents.

The standard map coverage includes:

1. Oceans, rivers down to 100 ft and major streams
2. Lakes greater than 5 sq. miles
3. Principal cities with population greater than 20K
4. Major interstates and/or motorways and principal highways
5. Polictical boundaries (state and international borders)
6. Large airports
7. Urban areas 50K and above

1. United States, including Alaska and Hawaii - In addition to the standard map coverage, it also includes:
   1. Cities 5K and above
   2. Tide data
      
       
2. Western Europe - In addition to the standard map coverage, it also includes:
   1. Rivers down to 700 ft, major streams and rivers