Chart correction N42/21 — chart 55024

55024 1Ed. 7/27/19 LAST NM N30/21 N42/21 Add Buoy Y, pillar, “X” topmark, Fl(2) Y 4s [Q130.6] 40°22′41.0″N 26°38′32.0″E (32(117)21 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 1Ed. 7/27/19

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