Chart correction 18/22 — chart 509

509 (INT 509) 4Ed. 07/02/94 LAST NM 14/22 18/22 Substitute Depth contour (30-meter) for dotted-line circle centered 22°33′N 120°03′E Note: Depth 27 meters and blue tint remain (TWN CH 313)

Source: NGA U.S. Notice to Mariners · edition: 4Ed. 07/02/94

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