Chart correction N28/20 — chart 61112
61112 12Ed. 5/2/15 LAST NM N27/19 N28/20 Delete Buoy “No 21” 25°58′09.2″S 32°29′38.5″E Buoy “No 21” 25°57′57.6″S 32°29′49.4″E Buoy “No 20” 25°57′40.3″S 32°30′28.5″E (See N27/19) Add Buoy “No 42” R, can, can topmark, Fl(2) R 6s 25°58′01.8″S 32°29′40.3″E Buoy “No 40” R, can, can topmark, Fl(2) R 6s 25°57′33.6″S 32°30′38.1″E (UKHO ARCS 646-1)
Source: NGA U.S. Notice to Mariners · edition: 12Ed. 5/2/15
Reference information — always verify against official Notices to Mariners before navigation.