Chart correction 2403 — chart 4217
Chart 4217 [ previous update 5189/22 ] SIRGAS DATUM Insert buoy out of position,BY¿Fl(2)10s3M 18° 28´·15S., 70° 19´·23W.
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.