Chart correction N52/21 — chart 22397
22397 1Ed. 09/29/12 LAST NM N51/21 N52/21 Substitute Depth 17.6 enclosed by depth contour (20-meter) for depth 20 meters 47°51′57″S 75°22′33″W Add Depth 19.6 meters enclosed by depth contour (20-meter) centered 47°49′15″S 75°26′40″W Depth 16.7 meters enclosed by depth contour (20-meter) centered 47°52′27″S 75°25′44″W Depth 19.7 meters enclosed by depth contour (20-meter) centered 47°50′29″S 75°25′14″W Depth 20 meters enclosed by depth contour (20-meter) centered 47°52′02″S 75°23′45″W Depth 14.7 meters 47°51′45″S 75°23′13″W Depth 18.6 meters 47°51′39″S 75°22′43″W and enclose above depths (2) with depth contour (20-meter) (11(115)21 Valparaiso) SECTION I NM 52/21 I-1.5
Source: NGA U.S. Notice to Mariners · edition: 1Ed. 09/29/12
Reference information — always verify against official Notices to Mariners before navigation.