Chart correction N9/20 — chart 37222
37222 15Ed. 5/12/18 LAST NM N52/19 N9/20 Delete Depth 2.8 meters 53°33.54′N 6°45.25′E Substitute Depth 8 meters for 8.5 meters 53°30.81′N 6°43.11′E Add Depth 9.7 meters, blue tint and enclosing depth contour (10-meter) centered 53°26.84′N 6°53.27′E Foul ground symbol [K31.1] 53°30.01′N 6°48.20′E Depth 2.2 meters 53°33.53′N 6°45.24′E (4(90, 91, 1120)20 Hamburg)
Source: NGA U.S. Notice to Mariners · edition: 15Ed. 5/12/18
Reference information — always verify against official Notices to Mariners before navigation.