Chart correction N31/21 — chart 54040
54040 4Ed. 7/25/15 LAST NM N4/16 N31/21 Substitute Depth 64 meters Wk [K26] for wreck 38°18.1′N 16°27.9′E Add Wreck [K29] (ED) 38°18.1′N 16°31.0′E ( 4(22)17, 16(12)18 Genova)
Source: NGA U.S. Notice to Mariners · edition: 4Ed. 7/25/15
Reference information — always verify against official Notices to Mariners before navigation.