Chart correction 20/23 — chart 12270

★12270  40Ed.  07/01/19  LAST  NM  18/23  20/23 Delete Depth 6 feet, blue tint, and enclosing depth contour (6-foot) in vicinity   38°58′18″N  76°14′49″W Add Depth 4 feet, blue tint, and enclosing depth contour (6-foot) centered   38°58′19″N  76°14′50″W (NOS)

Source: NGA U.S. Notice to Mariners · edition: 40Ed. 07/01/19

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