Chart correction N03/22 — chart 22173
22173 37Ed. 10/13/12 LAST NM N52/21 N03/22 Add Depth 36 meters 12°03′40″S 77°15′28″W and extend depth contour (50-meter) W to enclose Depth 17.5 meters enclosed by depth contour (20-meter) centered 12°05′00″S 77°15′11″W (PER CH 2235)
Source: NGA U.S. Notice to Mariners · edition: 37Ed. 10/13/12
Reference information — always verify against official Notices to Mariners before navigation.