Chart correction N18/20 — chart 24053

24053 17Ed. 4/2/11 LAST NM N51/19 N18/20 Delete Depth 5 meters 34°36′20.9″S 58°12′21.1″W Change Period of buoy to 10s 34°34′01.1″S 58°18′10.9″W Add AIS [S17.2] to buoy 34°37′01.6″S 58°18′16.5″W Submarine pipeline area [L40.2] bound by purple composite line joining 34°35′39.0″S 58°14′33.0″W 34°34′54.0″S 58°13′50.0″W 34°34′54.0″S 58°12′39.0″W 34°35′39.0″S 58°13′21.0″W Buoy Y, pillar, “X” topmark, Fl(5) Y 20s [Q130.6] 34°35′16.2″S 58°13′40.2″W Buoy Y, pillar, “X” topmark, Fl(5) Y 20s [Q130.6] 34°35′28.2″S 58°13′46.2″W Buoy Y, pillar, “X” topmark, Fl(5) Y 20s [Q130.6] 34°35′07.2″S 58°13′28.2″W Buoy YB, pillar, double cone topmark points downward, VQ(6) [Q130.3] 34°35′39.0″S 58°13′58.2″W Buoy BY, pillar, double cone topmark points upward, VQ [Q130.3] 34°34′54.0″S 58°13′19.2″W Depth 2.5 meters enclosed by depth contour (3-meter) centered 34°36′31.2″S 58°12′21.8″W (12(195)18, 10(111)19 Buenos Aires; 48(6122)19 Taunton)

Source: NGA U.S. Notice to Mariners · edition: 17Ed. 4/2/11

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