Chart correction 239 — chart 1631
Chart 1631 (INT 1418) [ previous update 5686/25 ] WGS84 DATUM Insert 23%Ã, Obstn 52° 29´·39N., 4° 09´·01E. 25%Ã, Obstn 52° 27´·05N., 3° 58´·83E.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.