Chart correction 12/21 — chart 54403

54403 4Ed. 6/14/86 LAST NM 8/21 12/21 Add Diving prohibited area [N21.2] bound by shore and purple composite line joining 37°08′18″N 27°16′30″E 37°08′18″N 27°16′54″E 37°08′42″N 27°16′54″E 37°08′42″N 27°15′00″E 37°06′18″N 27°15′00″E 37°06′18″N 27°16′18″E 37°07′00″N 27°16′18″E (34(181)16 Istanbul; TUR CH 224)

Source: NGA U.S. Notice to Mariners · edition: 4Ed. 6/14/86

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