Chart correction N15/21 — chart 55161

55161 2Ed. 3/19/11 LAST NM N49/20 N15/21 Relocate Buoy from 41°28′34″N 36°34′29″E to 41°26′19″N 36°33′38″E (See N49/20) Add Buoy Y, conical, “X” topmark, Fl Y 3s [Q130.6] 41°15′08″N 36°27′56″E (8(29)21 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 2Ed. 3/19/11

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