Chart correction 1424* — chart 3881
Chart 3881 [ previous update 936/24 ] WGS84 DATUM Insert Gf;Fl(3+1)Y.15s PTC1 20° 46´·68N., 106° 53´·19E. Gf;Fl(3+1)Y.15s PTC2 20° 46´·10N., 106° 53´·95E.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.