Chart correction 2224 — chart 1721

Chart 1721 [ previous update 2015/25 ] CGCS 2000 DATUM Insert symbol, Virtual aid to navigation, isolated danger topmark, V- AIS 27° 59´·40N., 121° 41´·10E.

Source: UKHO Admiralty Notices to Mariners

Reference information — always verify against official Notices to Mariners before navigation.