Chart correction N24/20 — chart 71256
71256 2Ed. 7/28/07 LAST NM N22/20 N24/20 Delete Depth 21 meters 1°17′56″N 104°25′11″E Add Depth 19.2 meters, blue tint and enclosing depth contour (20-meter) centered 1°17′53″N 104°25′11″E (SGP CH 503)
Source: NGA U.S. Notice to Mariners · edition: 2Ed. 7/28/07
Reference information — always verify against official Notices to Mariners before navigation.