Chart correction N17/25 — chart 550
550 7Ed. 2/9/1985 LAST NM N16/25 N17/25 Delete Depth 18 fathoms 19°38′N 106°53′E Add Light flare symbol [P1.2] 19°22′N 105°56′E Depth 11 fathoms 19°40′N 107°02′E (38(3705)21 Taunton; UKHO ARCS 3990-0; VNM CH 40013)
Source: NGA U.S. Notice to Mariners · edition: 7Ed. 2/9/1985
Reference information — always verify against official Notices to Mariners before navigation.