Chart correction 3457 — chart 564
Chart 564 [ previous update 3509/24 ] WGS84 DATUM Insert depth, 203, with seabed type, R (a) 22° 48´·086S., 43° 08´·560W. Delete depth, 215, close SW of: (a) above Replace GUmQ with T<tQ 22° 48´·326S., 43° 07´·571W.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.