Chart correction 4727 — chart 4981

Chart 4981 [ previous update 695/23 ] NAD83 DATUM Insert the accompanying note, AUTOMATIC IDENTIFICATION SYSTEMS, centred on: 61° 02´·90N., 146° 13´·05W.

Source: UKHO Admiralty Notices to Mariners

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