Chart correction 474 — chart 3378
Chart 3378 [ previous update 4522/23 ] CGCS 2000 DATUM Insert symbol, Virtual aid to navigation, isolated danger topmark, V- AIS 39° 53´·87N., 119° 45´·45E.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.