Chart correction 1871 — chart 1253
Chart 1253 [ previous update 1732/24 ] CGCS 2000 DATUM Insert symbol, Virtual aid to navigation, isolated danger topmark, V- AIS, out of position 36° 07´·6N., 121° 11´·4E.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.