Namibia is covered by 44 map sheets at scale 1:250'000, each covering 2° longitude by 1° latitude. The map number indicates de coordinates of the upper left corner of the map (1712 = 17° Latitude South / 12° Longitude East)

Click on the assembly map to see a reduced image of the corresponding 1:250'000 map sheet

As each map sheet at scale 1:50'000 covers 15 minutes Latitude by 15 minutes longitude, 1250 map sheets are needed to cover the country. Two letters define the location of the sheet within the squared degree:

For instance, we know from the sheet number that the upper-left corner of 1:50’000 map sheet N° 1918 BA is located at 19°00’ S / 18 °30’ E