Chart correction 4770 — chart 4910

Chart 4910 [ previous update 2116/23 ] NAD83 DATUM Insert the accompanying note, AUTOMATIC IDENTIFICATION SYSTEMS, centred on: 33° 34´·3N., 117° 32´·2W.

Source: UKHO Admiralty Notices to Mariners

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