Chart correction N31/23 — chart 24057

24057   6Ed.  02/11/12  LAST  NM  N15/23  N31/23 (Plan) Add Buoy Y, pillar, "X" topmark, Fl(4) Y 5s [Q130.6]   34°57′28.8″S  56°09′33.0″W (See N20/19) (6(59)23 Montevideo)

Source: NGA U.S. Notice to Mariners · edition: 6Ed. 02/11/12

Reference information — always verify against official Notices to Mariners before navigation.