Chart correction N46/21 — chart 22312
22312 3Ed. 01/14/12 LAST NM N44/21 N46/21 Delete Beacon 37°01′40″S 73°10′07″W Beacon 37°01′29″S 73°10′11″W Substitute Depth 6.3 meters for depth 7.1 meters 37°01′07″S 73°11′34″W Note: Depth contour (10-meter) remains Change Light to Fl G 5s 37°01′52″S 73°09′17″W Add V-AIS [S18.1] 37°01′07″S 73°11′34″W (Plan B) Delete Range beacons (2), range line, and legend "Beacons in line 334.5°" between 37°01′29.9″S 73°10′12.8″W 37°01′58.6″S 73°09′55.7″W Change Light to Fl G 5s 37°01′51.7″S 73°09′17.8″W (11(87)19, 10(73)20 Valparaiso; UKHO LL)
Source: NGA U.S. Notice to Mariners · edition: 3Ed. 01/14/12
Reference information — always verify against official Notices to Mariners before navigation.