Chart correction N20/21 — chart 54369

54369 5Ed. 1/16/16 LAST NM N2/21 N20/21 Add “Restricted Area” [N2.1] bound by purple composite line joining 40°03′11″N 26°08′39″E 40°02′36″N 26°10′04″E 40°02′24″N 26°11′24″E 40°00′25″N 26°11′36″E 39°59′41″N 26°10′56″E 39°58′52″N 26°08′42″E (7(26)21 Istanbul)

Source: NGA U.S. Notice to Mariners · edition: 5Ed. 1/16/16

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