Chart correction N40/21 — chart 22312
22312 3Ed. 1/14/12 LAST NM N39/21 N40/21 Substitute Depth 4.5 meters for depth 5.3 meters 37°03′32″S 73°09′32″W Note: Blue tint, depth contour (10-meter) and bottom characteristic “R” remain (Plan B) Substitute Depth 4.5 meters for depth 5.3 meters 37°03′32.1″S 73°09′32.2″W Note: Blue tint, depth contour (10-meter), and bottom characteristic “R” remain Add Depth 12.7 meters Obstn [K41] 37°01′52.5″S 73°10′54.3″W (10(73)20 Valparaiso)
Source: NGA U.S. Notice to Mariners · edition: 3Ed. 1/14/12
Reference information — always verify against official Notices to Mariners before navigation.