Chart correction N27/20 — chart 24052
24052 17Ed. 4/30/11 LAST NM N26/20 N27/20 (Plan B) Delete Buoy “No 3” 34°28′39.0″S 57°51′53.0″W Add Buoy “No 5” G, pillar, can topmark, Fl G 5s 34°28′39.0″S 57°51′51.0″W (3(34)18 Montevideo)
Source: NGA U.S. Notice to Mariners · edition: 17Ed. 4/30/11
Reference information — always verify against official Notices to Mariners before navigation.