Chart correction N21/23 — chart 37228
37228 15Ed. 02/16/13 LAST NM N19/23 N21/23 Delete Foul ground symbol 53°53′13.8″N 9°11′42.4″E (See N18/23) (18(1711)23 Hamburg)
Source: NGA U.S. Notice to Mariners · edition: 15Ed. 02/16/13
Reference information — always verify against official Notices to Mariners before navigation.