Chart correction 1879 — chart 3363
Chart 3363 [ previous update 4509/24 ] CGCS 2000 DATUM Insert GWrQ(3)10s Z10 21° 04´·10N., 110° 27´·27E. ¶ Iso.R.4s12m3M (a) 21° 04´·15N., 110° 27´·51E. sector at light as follows: (a) above Obscd 132° - 222° (90°)
Source: UKHO Admiralty Notices to Mariners
Reference information — always verify against official Notices to Mariners before navigation.