Chart correction 4977 — chart 3817

Chart 3817 (INT 1249) [ previous update 86/24 ] WGS84 DATUM Insert depth, 93, enclosed by 10m contour (a) 60° 19´·15N., 25° 33´·59E. Delete sounding out of position, 78, and associated 10m contour, close NW of: (a) above 63 ESTONIA - Pilot boarding places. Source: Estonian Notice 11/171/24

Source: UKHO Admiralty Notices to Mariners

Reference information — always verify against official Notices to Mariners before navigation.