I would like to use S-57 chart data in the ArcGIS to produce a DEM for research purposes. As a test, I have used the geodatabase model to import Electronic Navigational Charts (ENC) .000 files from the NOAA Coastal Services Center. I am now trying to purchase S-57 ENCs for my study site in Brazil. These are not available for free and the vendors are requesting an 'ENC permit number'. From what I could understand they use this permit number to encrypt the data so that it can be viewed only in the correspondent software from which it was obtained. They can not sell such ENCs without the permit number. Does ArcGIS have an ENC permit number that I can provide to the vendors? Thanks in advance, Conrado
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