Chart correction N50/20 — chart 55046

55046 5Ed. 8/4/12 LAST NM N49/20 N50/20 Substitute Beacon BRB, double ball topmark, Fl(2) W 5s 10m 10M AIS [Q130.4] for beacon 40°56′12″N 29°05′16″E (43(143)20 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 5Ed. 8/4/12

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