Chart correction N33/20 — chart 54368
54368 5Ed. 1/18/20 LAST NM N15/20 N33/20 Add “Spoil Ground” area [N62.1] bound by dashed line joining 40°32′19″N 25°59′06″E 40°33′08″N 26°00′05″E 40°32′02″N 26°01′41″E 40°31′13″N 26°00′41″E (27(79)20 Istanbul)
Source: NGA U.S. Notice to Mariners · edition: 5Ed. 1/18/20
Reference information — always verify against official Notices to Mariners before navigation.