Chart correction 4770 — chart 4919

Chart 4919 [ previous update 3648/23 ] NAD83 DATUM Insert the accompanying note, AUTOMATIC IDENTIFICATION SYSTEMS, centred on: 47° 37´·07N., 124° 06´·48W.

Source: UKHO Admiralty Notices to Mariners

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