Chart correction 4691* — chart 1867
Chart 1867 (Panel C, Hunterston Channel) [ previous update 2787/24 ] ETRS89 DATUM Insert the accompanying block, centred on: 55° 44´·8N., 4° 55´·6W.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.