Chart correction 1929 — chart 1720

Chart 1720 [ previous update 783/23 ] CGCS 2000 DATUM Insert symbol, Virtual Aid to Navigation, V-AIS No 3 23° 54´·10N., 117° 54´·51E. symbol, Virtual Aid to Navigation, V-AIS No 4 23° 52´·31N., 117° 56´·07E. symbol, Virtual Aid to Navigation, V-AIS No 2 23° 45´·11N., 117° 43´·00E. symbol, Virtual Aid to Navigation, V-AIS No 1 23° 43´·33N., 117° 44´·54E.

Source: UKHO Admiralty Notices to Mariners

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