Chart correction 4727 — chart 1947

Chart 1947 [ previous update 3074/23 ] NAD83 DATUM Insert the accompanying note, AUTOMATIC IDENTIFICATION SYSTEMS, centred on: 47° 38´·75N., 123° 02´·45W.

Source: UKHO Admiralty Notices to Mariners

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