Chart correction 15/23 — chart 12278
★12278 80Ed. 05/01/20 LAST NM 12/23 15/23 Substitute Light "1MR" QG 15ft 4M for buoy "1MR" 39°16′22″N 76°20′11″W (11/23 CG5; USCG LL)
Source: NGA U.S. Notice to Mariners · edition: 80Ed. 05/01/20
Reference information — always verify against official Notices to Mariners before navigation.