Admiralty Raster Chart Service
ADMIRALTY Raster Chart Service (ARCS) is an electronic raster chart service provided by the United Kingdom Hydrographic Office (UKHO), for use in the Electronic Chart Display and Information System (ECDIS). ARCS charts are exact digital copies of British ADMIRALTY paper charts used for marine navigation, produced in a raster format. They have the same appearance and use the same internationally recognised symbology as the ADMIRALTY paper chart series. They provide full geographical referencing and can be fully integrated with the Global Positioning System to provide real-time navigation.