Chart correction N52/23 — chart 55048
55048 13Ed. 11/08/14 LAST NM N50/23 N52/23 (Panel A) Add Buoy Y, can, "X" topmark, Fl Y 3s [Q130.6] 41°11′55.9″N 29°05′39.7″E (24(120)23 Istanbul)
Source: NGA U.S. Notice to Mariners · edition: 13Ed. 11/08/14
Reference information — always verify against official Notices to Mariners before navigation.