This Graphic is taken from http://msi.nga.mil/MSISiteContent/StaticFiles/Images/SDLIMITS.jpg

Graphic overview (world map) with limits of the Sailing Directions volumes of the U.S. NIMA (National Imagery and Mapping Agency) which can be downloaded starting at page http://permanent.access.gpo.gov/websites/pollux/pollux.nss.nima.mil/NAV_PUBS/SD/

The sailing directions can be found with this URL: [1] (replace the last three digits by the actual number)

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