Chart correction 4050 — chart 1793
Chart 1793 [ previous update 2885/23 ] CGCS 2000 DATUM Insert symbol, Virtual aid to navigation, special topmark, V-AIS 23° 13´·92N., 116° 49´·04E.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.