Chart correction 18/23 — chart 12230
★12230 67Ed. 01/01/17 LAST NM 15/23 18/23 Add Buoy "MB" Y, Fl Y 6s with legend "Priv" [Q130.6] 38°12′32″N 76°13′47″W Buoy "PR" Y, Fl Y 6s with legend "Priv" [Q130.6] 38°02′55″N 76°21′34″W (13/23 CG5; USCG LL)
Source: NGA U.S. Notice to Mariners · edition: 67Ed. 01/01/17
Reference information — always verify against official Notices to Mariners before navigation.