Chart correction 4770 — chart 2839

Chart 2839 (Panel B) [ previous update 4131/23 ] NAD83 DATUM Insert the accompanying note, AUTOMATIC IDENTIFICATION SYSTEMS, centred on: 46° 10´·93N., 123° 16´·45W.

Source: UKHO Admiralty Notices to Mariners

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