Chart correction N4/21 — chart 37224
37224 12Ed. 11/3/12 LAST NM N2/21 N4/21 Substitute Depth 5.9 meters for 7.8 meters 53°25′45.0″N 6°56′46.2″E Add Swept depth 12.6 meters Obstn [K42] 53°27′24.3″N 6°52′32.6″E (49(91)20 Hamburg; DEU CH 91)
Source: NGA U.S. Notice to Mariners · edition: 12Ed. 11/3/12
Reference information — always verify against official Notices to Mariners before navigation.