Chart correction N41/23 — chart 44049
44049 11Ed. 05/18/13 LAST NM N40/23 N41/23 Delete Foul ground symbol 55°18′15″N 13°03′49″E Foul ground symbol 55°14′45″N 12°57′44″E Substitute Depth 12 meters for foul ground symbol 55°18′55″N 12°52′32″E (980(17887)23 Norrkoping; SWE CH 921)
Source: NGA U.S. Notice to Mariners · edition: 11Ed. 05/18/13
Reference information — always verify against official Notices to Mariners before navigation.