Chart correction N51/22 — chart 93610
93610 4Ed. 04/27/13 LAST NM N50/22 N51/22 Delete Dangerous wreck 20°10′00″N 110°04′34″E Dangerous wreck (PA) 20°06′00″N 110°08′39″E Relocate Buoy "No 15" from 20°10′15″N 110°01′28″E to 20°10′06″N 110°00′05″E Buoy "No 13" from 20°10′29″N 110°04′40″E to 20°10′24″N 110°03′42″E Add Danger circle "Obstn (containers)" [K40] 19°59′54″N 109°10′30″E (13(424)15, 21(770), 32(1186)22 Tianjin)
Source: NGA U.S. Notice to Mariners · edition: 4Ed. 04/27/13
Reference information — always verify against official Notices to Mariners before navigation.