Chart correction 3401 — chart 4121
Chart 4121 [ previous update 2619/26 ] WGS84 DATUM Delete Gf;Fl(5)Y.20s A01 (a) 22° 17´·253N., 114° 04´·879E. Automatic Identification System, AIS, at light-buoy (a) above
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.