Chart correction 4257 — chart 495
Chart 495 [ previous update 3592/23 ] WGS84 DATUM Insert depth, 145 , and extend 15m contour E to enclose (a) 21° 48´·49S., 40° 59´·13W. Delete depth, 161 , close SE of: (a) above
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.