Chart correction 2398 — chart 2639
Chart 2639 (Panel C, Approaches to Balikpapan) [ previous update 1925/23 ] WGS84 DATUM Insert åObstn 1° 26´·61S., 116° 57´·67E.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.