Chart correction N20/22 — chart 55049

55049 7Ed. 03/16/13 LAST NM N13/22 N20/22 (Panel B) Add Buoy Y, pillar, "X" topmark, Fl(2) Y 6s [Q130.6] 40°44′28.9″N 29°47′46.4″E (10(33)22 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 7Ed. 03/16/13

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