Chart correction 04/23 — chart 18421

18421 53Ed. 03/01/19 LAST NM 44/22 04/23 Add Rock which covers and uncovers with drying height 0.1 meter [K11] 48°33′51″N 123°15′51″W (10/22 Ottawa) SECTION I NM 4/23 I-1.3

Source: NGA U.S. Notice to Mariners · edition: 53Ed. 03/01/19

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