Chart correction N20/21 — chart 55021

55021 1Ed. 7/27/19 LAST NM N19/21 N20/21 Add “Restricted Area” [N2.1] bound by purple composite line joining 40°03′11.1″N 26°08′38.9″E 40°02′36.1″N 26°10′03.7″E 40°02′23.6″N 26°11′24.1″E 40°00′24.8″N 26°11′35.5″E 39°59′41.3″N 26°10′56.5″E 39°58′51.7″N 26°08′42.1″E (7(26)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.