Chart correction 3633 — chart 2820
Chart 2820 [ previous update 4457/22 ] WGS84 DATUM Amend legend to, (15 Apr - 30 Sep), centred on: 47° 50´·82N., 4° 01´·61W.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.