Chart correction 4722 — chart 591

Chart 591 [ previous update 1071/23 ] NAD83 DATUM Insert the accompanying note, AUTOMATIC IDENTIFICATION SYSTEMS, centred on: 37° 50´·68N., 122° 12´·51W.

Source: UKHO Admiralty Notices to Mariners

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