Chart correction 40/24 — chart 18400

18400  51Ed.  08/01/19  LAST  NM  34/24  40/24 Substitute Rock which covers and uncovers [K11] for depth 4 1/4 fathoms   49°14.1′N  123°57.7′W (8/24 Ottawa)

Source: NGA U.S. Notice to Mariners · edition: 51Ed. 08/01/19

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