|Builder||Mackie & Thomson, Govan|
|Operator||Hellyer’s Steam Trawling Co. Ltd., Hull|
U-boat attacks on Trawler Cassio
|1||24 Jul 1915||U 36 (Ernst Graeff)||Sunk||Stopped and sunk 60 miles NxW of Hoy||0|
|Location also given as 123 miles NWxW of Hoy Head.|
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