Chart correction 4727 — chart 4979

Chart 4979 [ previous update 1121/23 ] NAD83 DATUM Insert the accompanying note, AUTOMATIC IDENTIFICATION SYSTEMS, centred on: 60° 51´·88N., 145° 59´·60W.

Source: UKHO Admiralty Notices to Mariners

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