Chart correction 46/21 — chart 11374
★11374 38Ed. 05/01/15 LAST NM 45/21 46/21 (Side B) Substitute Buoy "21" G, can for beacon "21" 30°21′35.8″N 88°16′52.0″W Buoy "22" R, Fl R 4s for light "22" 30°22′02.9″N 88°16′38.0″W Buoy "23" G, can for beacon "23" 30°22′31.9″N 88°16′29.0″W (38/21 CG8)
Source: NGA U.S. Notice to Mariners · edition: 38Ed. 05/01/15
Reference information — always verify against official Notices to Mariners before navigation.