Chart correction N9/21 — chart 62404
62404 5Ed. 3/31/18 LAST NM N8/21 N9/21 Delete Depth 10.9 meters 24°17′50″N 52°40′23″E Depth 10 meters, blue tint and enclosing depth contour (10-meter) in vicinity 24°17′49″N 52°40′30″E Add Depth 9.4 meters, blue tint and enclosing depth contour (10-meter) centered 24°17′50″N 52°40′28″E (UKHO ARCS 3778-0)
Source: NGA U.S. Notice to Mariners · edition: 5Ed. 3/31/18
Reference information — always verify against official Notices to Mariners before navigation.