Chart correction 4727 — chart 51

Chart 51 [ previous update 2484/22 ] NAD83 DATUM Insert the accompanying note, AUTOMATIC IDENTIFICATION SYSTEMS, centred on: 47° 23´·14N., 122° 52´·27W. Wk50/23 II 2.33

Source: UKHO Admiralty Notices to Mariners

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