Chart 4723 (INT 723) [ previous update 4418/26 ] WGS84 DATUM Insert the accompanying block A, centred on: 21° 44´·9S., 111° 06´·8E. the accompanying block B, centred on: 21° 45´·4S., 113° 25´·2E.
Source: UKHO Daily NtM (Section III bundles)
Reference information — always verify against official Notices to Mariners before navigation.