Chart correction N31/22 — chart 55023

55023 1Ed. 07/27/19 LAST NM N13/22 N31/22 Add Buoy Y, pillar, "X" topmark, Fl Y 3s [Q130.6] 40°13′50.1″N 26°31′31.2″E Buoy Y, pillar, "X" topmark, Fl Y 3s [Q130.6] 40°13′05.8″N 26°29′48.4″E (17(63), 22(82)22 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 1Ed. 07/27/19

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