Chart correction 50/20 — chart 54430

54430 1Ed. 8/21/93 LAST NM 49/20 50/20 Add Buoy Y, pillar, “X” topmark [Q130.6] 36°50.4′N 31°00.2′E (46(219)19 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 1Ed. 8/21/93

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