Chart correction 46/21 — chart 11373
★11373 52Ed. 05/01/15 LAST NM 45/21 46/21 Substitute Buoy "21" G, can for beacon "21" 30°21′36″N 88°16′52″W Buoy "22" R, Fl R 4s for light "22" 30°22′03″N 88°16′38″W Buoy "23" G, can for beacon "23" 30°22′32″N 88°16′29″W (38/21 CG8)
Source: NGA U.S. Notice to Mariners · edition: 52Ed. 05/01/15
Reference information — always verify against official Notices to Mariners before navigation.