Chart correction 47/20 — chart 22286
22286 1Ed. 11/1/03 LAST NM 31/16 47/20 Delete Depth 16.5 meters 30°14′49.0″S 71°30′07.0″W Buoy 30°15′14.4″S 71°31′06.9″W Buoy 30°14′36.4″S 71°32′11.9″W Buoy 30°15′22.4″S 71°33′09.9″W Buoy 30°16′03.4″S 71°30′12.9″W Buoy 30°16′07.4″S 71°34′10.9″W Buoy 30°17′31.3″S 71°34′04.9″W Add Depth 8.3 meters 30°14′49.2″S 71°30′08.4″W and extend depth contour (10-meter) N to enclose Depth 4.4 meters, blue tint and enclosing depth contour (5-meter) centered 30°14′50.8″S 71°30′15.5″W (8(61)16, 4(21)18 Valparaiso)
Source: NGA U.S. Notice to Mariners · edition: 1Ed. 11/1/03
Reference information — always verify against official Notices to Mariners before navigation.