|Builder||E. Bonne, Kerity|
|Operator||?, Tréguier |
U-boat attacks on Sailing vessel Yvonne
|1||6 Sep 1916||UB 29 (Herbert Pustkuchen)||Sunk||Stopped and sunk in the western English Channel||49° 32'N, 5° 03'W|
|Tonnage incorrectly listed as 163 grt in many sources. There was an Yvonne of that tonnage but she survived the war.|
Position of attack on Yvonne
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