Chart correction N10/20 — chart 22431

22431 1Ed. 12/7/13 LAST NM N8/20 N10/20 Relocate Buoy from 51°10′50″S 74°18′04″W to 51°10′50″S 74°18′25″W and add can topmark Add Depth 13.2 meters, blue tint and enclosing depth contour (20-meter) centered 51°10′49″S 74°18′55″W (10(84)19 Valparaiso; CHL CH 10500)

Source: NGA U.S. Notice to Mariners · edition: 1Ed. 12/7/13

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