Chart correction 13/21 — chart 73581

73581 4Ed. 8/15/98 LAST NM 12/21 13/21 Delete Depth 12.7 meters 9°29′13.6″S 147°04′45.8″E Change Legend to “Lts in line 054.5°” 9°34′24.7″S 147°04′53.0″E Add Depth 7.2 meters 9°29′00.4″S 147°04′14.8″E and extend depth contour (10-meter) NE to enclose Depth 10 meters, blue tint and enclosing depth contour (10-meter) centered 9°29′10.4″S 147°04′45.6″E (AUS CH PNG621, PNG622)

Source: NGA U.S. Notice to Mariners · edition: 4Ed. 8/15/98

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