Chart correction 42/22 — chart 14927

★14927 27Ed. 08/01/20 LAST NM 35/21 42/22 Add Danger area "Obstruction" [K40] bound by dotted line (limiting danger line) joining 42°00′52″N 87°39′30″W 42°00′56″N 87°39′01″W 42°00′51″N 87°39′00″W 42°00′47″N 87°39′29″W (NOS)

Source: NGA U.S. Notice to Mariners · edition: 27Ed. 08/01/20

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