Chart correction N50/20 — chart 55049

55049 7Ed. 3/16/13 LAST NM N49/20 N50/20 (Panel B) Add Buoys (2), spherical 40°45′36.8″N 29°55′01.7″E Buoy (mooring) [Q40], can 40°45′33.6″N 29°55′00.0″E (43(144)20 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 7Ed. 3/16/13

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