Chart correction 20/24 — chart 18421

★18421  53Ed.  03/01/19  LAST  NM  13/24  20/24 Delete Topmark from buoy "DS"   48°34′09″N  122°50′41″W (15/24 CG13)

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

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