Admiralty charts are reproductions of US Raster charts, I’m not sure the UKHO will be maintaining them as they are canceled by NOAA, I doubt the brits are going to be be surveying Southwest Pass.
Admiralty charts are reproductions of US Raster charts, I’m not sure the UKHO will be maintaining them as they are canceled by NOAA, I doubt the brits are going to be be surveying Southwest Pass.