Chart correction N17/21 — chart 44087

44087 1Ed. 6/30/12 LAST NM N47/20 N17/21 Delete Sunken mine and purple composite-line circle in vicinity 54°22′49″N 12°07′40″E Sunken mine and purple composite-line circle in vicinity 54°22′55″N 12°05′29″E (See N47/20) Add Foul ground symbol [K31.1] 54°12′51″N 12°03′37″E (51(1671)20, 10(163)21 Hamburg)

Source: NGA U.S. Notice to Mariners · edition: 1Ed. 6/30/12

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