Chart correction 2687* — chart 1826
Chart 1826 (INT 1607) [ previous update 2581/23 ] ETRS89 DATUM Amend fog signal to, Horn(1)20s, at light 53° 19´·88N., 4° 37´·23W.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.