Chart correction N4/21 — chart 37228

37228 15Ed. 2/16/13 LAST NM N2/21 N4/21 Delete Depth 5.7 meters 53°51′19.0″N 9°19′42.8″E Add Area [N1.1] bound by dashed line joining 53°51′38.4″N 9°19′18.0″E 53°51′00.6″N 9°20′19.2″E 53°51′07.2″N 9°19′58.2″E 53°51′22.2″N 9°19′34.2″E 53°51′33.0″N 9°19′21.0″E Depth 2.5 meters 53°51′18.0″N 9°19′45.7″E and extend depth contour (5-meter) SW to enclose (48(1630)20 Hamburg)

Source: NGA U.S. Notice to Mariners · edition: 15Ed. 2/16/13

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