Chart correction N18/20 — chart 55064
55064 4Ed. 11/28/15 LAST NM N37/19 N18/20 Delete Buoy 41°12′12″N 29°07′36″E Add Light Fl G 4s 11m 5M 41°12′11″N 29°07′35″E (7(34)19 Istanbul)
Source: NGA U.S. Notice to Mariners · edition: 4Ed. 11/28/15
Reference information — always verify against official Notices to Mariners before navigation.