div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=the-arcgis-s-57-enc-nautical-data-model-a-news-a-arcnews-a-summer04articleshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=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 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsusreader033viewer20220603235f0d9f507e708231d43b4453html5thumbnails1jpg width=140 height=200 divdiv