Chart correction N17/20 — chart 55046

55046 5Ed. 8/4/12 LAST NM N11/20 N17/20 Delete Buoy 40°50′14″N 29°15′32″E Add Depth 17.2 meters 40°50′17″N 29°15′32″E and extend depth contour (20-meter) W to enclose (38(184)18 Istanbul; 7(808)20 Taunton)

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

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