|Builder||Steward & Latham, Blackwall|
|Operator||Numa Lury, Arcachon|
U-boat attacks on Trawler Yvonne
|1||5 Feb 1917||UB 39 (Heinrich Küstner)||Sunk||Shelled and sunk 20 miles in S80Â°W of Arcachon||Fishing||3|
|The master, Louis Hourdic (Heurtiz ?) and chief engineer were killed in the action|
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