Chart correction 3583 — chart 4237
Chart 4237 [ previous update 826/21 ] SIRGAS DATUM Insert ´Masts (a) 29° 57´·007S., 71° 19´·822W. Delete depth, 88, close E of: (a) above Wk41/23 2.36 II
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.