Chart correction 4771 — chart 3999
Chart 3999 [ previous update 5546/24 ] CGCS 2000 DATUM Insert legend, Under construction (2025), centred on: 21° 43´·16N., 108° 38´·45E.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.