Chart correction N5/20 — chart 55045

55045 3Ed. 7/28/12 LAST NM N2/20 N5/20 Change Period of buoy to 4s 40°58′18″N 27°44′21″E Add Buoy Y, pillar, “X” topmark, Fl Y 4s [Q130.6] 40°59′16″N 27°44′02″E Buoy Y, pillar, “X” topmark, Fl Y 4s [Q130.6] 41°00′17″N 27°43′46″E (38(180)19 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 3Ed. 7/28/12

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