Chart correction 34/22 — chart 18474

★18474 11Ed. 12/01/15 LAST NM 26/22 34/22 Add Submarine pipeline (sewer) [L41.1] between 47°34′57″N 122°38′21″W 47°34′52″N 122°38′22″W (NOS)

Source: NGA U.S. Notice to Mariners · edition: 11Ed. 12/01/15

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