Chart correction 46/21 — chart 18424

★18424 28Ed. 02/01/11 LAST NM 24/18 46/21 Add AIS [S17.2] to buoy "C" 48°40′34″N 122°42′48″W (38/21 CG13)

Source: NGA U.S. Notice to Mariners · edition: 28Ed. 02/01/11

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