Chart correction N21/20 — chart 24055
24055 7Ed. 12/8/12 LAST NM N18/20 N21/20 Add Depth 5 meters, blue tint and enclosing depth contour (5-meter) centered 34°55.2′S 56°15.0′W Depth 4.9 meters 34°55.2′S 56°14.5′W and extend depth contour (5-meter) and blue tint SW to enclose (URY CH 41)
Source: NGA U.S. Notice to Mariners · edition: 7Ed. 12/8/12
Reference information — always verify against official Notices to Mariners before navigation.