Chart correction 30/20 — chart 22221
22221 20Ed. 8/31/96 LAST NM 18/20 30/20 (Plan B) Delete Depth 5 meters, blue tint and enclosing dotted-line circle centered 18°28′11″S 70°19′12″W Add Depth 4.9 meters Wk [K26] 18°28′09″S 70°19′17″W Depth 0.6 meter Obstn [K41] 18°28′09″S 70°19′15″W (2(10)18 Valparaiso; CHL CH 1111)
Source: NGA U.S. Notice to Mariners · edition: 20Ed. 8/31/96
Reference information — always verify against official Notices to Mariners before navigation.