Chart correction N18/23 — chart 71251
71251 14Ed. 04/20/19 LAST NM N07/23 N18/23 Delete Mooring buoy "TK-MB-12" 1°23′07.8″N 104°01′20.4″E Mooring buoy "TK-MB-11" 1°23′15.3″N 104°01′12.8″E Buoy "NEA-CHG" 1°20′01.2″N 104°02′31.2″E Add Mooring buoy "TK-MB-11", Fl Y 3s [Q41.1] 1°23′42.0″N 104°00′57.0″E Mooring buoy "TK-MB-12", Fl Y 3s [Q41.1] 1°23′30.0″N 104°01′03.0″E (4(15, 16, 23)23 Singapore)
Source: NGA U.S. Notice to Mariners · edition: 14Ed. 04/20/19
Reference information — always verify against official Notices to Mariners before navigation.