Chart correction 4881 — chart 820
Chart 820 (INT 1238) [ previous update 4842/25 ] WGS84 DATUM Amend legend to, 4 Fl Y 3s, centred on: 59° 17´·94N., 18° 14´·78E.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.