Chart correction 4727 — chart 80

Chart 80 [ previous update 2397/22 ] NAD83 DATUM Insert the accompanying note, AUTOMATIC IDENTIFICATION SYSTEMS, centred on: 48° 22´·71N., 122° 37´·34W.

Source: UKHO Admiralty Notices to Mariners

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