Chart correction N15/23 — chart 54387

54387 8Ed. 04/30/16 LAST NM N12/23 N15/23 Add Buoy Y, pillar, "X" topmark, Iso Y 4s [Q130.6] 38°27′47″N 26°52′25″E (7(33)23 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 8Ed. 04/30/16

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