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The ArcGIS S-57 ENC Nautical Data Model › news › arcnews › summer04articles › nautical-… · Lowest astronomical tide Local datum International Great Lakes Datum 1985 Mean

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Page 1: The ArcGIS S-57 ENC Nautical Data Model › news › arcnews › summer04articles › nautical-… · Lowest astronomical tide Local datum International Great Lakes Datum 1985 Mean