MapMedia Navionics Mega Wide Vector Chart: MWVNRS37XGMAP - Upper Volga River (Update) J3 - South China Sea & Philippines British Admiralty Nautical Chart 158:

British Admiralty Nautical Chart 158: Berenice (Barnis) to Masamirit is a standard nautical chart

2 Exploration

testing technology and quantity determination

**Efficient Chart Correction Management**: The chart maintenance log allows easy entry and organization of chart correction details

controlling incidents and the review periods

MapMedia Navionics Mega Wide Vector Chart: MWVNRS37XGMAP - Upper Volga River (Update) J3 - South China Sea & Philippines British Admiralty Nautical Chart 158:How MapMedia electronic charts are updated To meet the needs and safety of users, MapMedia updates its vector charts once or twice a year, according to the chart providers' updates, and once a year for raster charts. It is of course, extremely important for boaters to keep their charts up to date, in order to ensure the safety of all passengers onboard. Corrections, improvements and changes are made on a daily basis by the Hydrographic Services and by