0837.7z -

: Based on OpenSeaMap data, which is a sub-project of OpenStreetMap focused on nautical information.

: The "0837" timestamp version specifically covers the South China Sea . 0837.7z

: Raster navigation charts used in marine GPS applications. : Based on OpenSeaMap data, which is a

According to technical archives like the TU Darmstadt OpenStreetMap Mirror , this specific file contains: : Based on OpenSeaMap data

It is part of a historical archive of chart data used by mariners and navigation software. Primary Content: Nautical Charts