Chart correction 9/21 — chart 18723
★18723 3Ed. 11/22/97 LAST NM 10/16 9/21 Add Buoy Y, conical, Fl(4) Y 20s [Q130.6] 34°27′24.0″N 120°40′49.2″W (NOS)
Source: NGA U.S. Notice to Mariners · edition: 3Ed. 11/22/97
Reference information — always verify against official Notices to Mariners before navigation.