Chart correction 42/22 — chart 14905

★14905 34Ed. 08/01/20 LAST NM 46/21 42/22 Add Danger area "Obstruction" [K40] bound by dotted line (limiting danger line) between 42°00′53″N 87°39′32″W 42°00′59″N 87°38′60″W 42°00′51″N 87°38′58″W 42°00′46″N 87°39′30″W (NOS)

Source: NGA U.S. Notice to Mariners · edition: 34Ed. 08/01/20

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