Chart correction 421 — chart 3220
Chart 3220 (INT 1875) [ previous update 4277/23 ] WGS84 DATUM Insert depth, 245 (a) 38° 40´·58N., 9° 25´·61W. Delete depth, 255, close N of: (a) above Insert ´ 38° 39´·62N., 9° 23´·40W. Delete ÂLisboa 38° 40´·842N., 9° 24´·335W.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.