Chart correction N18/23 — chart 22312

22312   3Ed.  01/14/12  LAST  NM  N16/23  N18/23 Delete Depth 22 meters   37°06′02″S  73°31′45″W Add Depth 13.2 meters enclosed by depth contour (20-meter) centered   37°06′02″S  73°31′53″W (7(50)20 Valparaiso)

Source: NGA U.S. Notice to Mariners · edition: 3Ed. 01/14/12

Reference information — always verify against official Notices to Mariners before navigation.