World Navigation Charts

Collection: World

Map Service Name: World_Navigation_Charts

Description: This map presents a digital version of the Operational Navigation Charts (ONC) at 1:1,000,000-scale, produced by the US National Geospatial-Intelligence Agency (NGA). The map includes over 200 charts across the world, excluding parts of North America, Europe, Asia, and Oceania where charts are not publicly available.

Attribution: Copyright:© 2011 East View Cartographic

Coordinate System: WGS 1984 Web Mercator (Auxiliary Sphere)

Units of Measure: esriMeters

Extent:

• XMin: -20037507.0671618
• YMin: -19971868.8804086
• XMax: 20037507.0671618
• YMax: 19971868.8804086

Spatial Reference: 102100 (3857)

Map DPI: 96

Tile Size of Map Cache: 256 pixels by 256 pixels

Map Service Data Format: Map server cache in JPEG format

Map Service Size: 8.79 GB

Map Service Size on Disk: 8.79 GB

Map Service Number of Files: 256

Cached Map Scales:

• 1:591,657,527.591555
• 1:295,828,763.795777
• 1:147,914,381.897889
• 1:73,957,190.948944
• 1:36,978,595.474472
• 1:18,489,297.737236
• 1:9,244,648.868618
• 1:4,622,324.434309
• 1:2,311,162.217155
• 1:1,155,581.108577
• 1:577,790.554289