|Builder||Naval Construction & Armament Co., Ltd., Barrow|
|History||Built as a torpedo gunboat; converted into a minesweeper in 1909.|
U-boat attacks on Minesweeper Jason
|1||3 Apr 1917||U 78 (Otto Dröscher)||Sunk||Mined off Coll Island, west coast of Scotland 56°35’45”N, 06°28’15”W.||56° 36'N, 6° 28'W||25|
|Date incorrectly listed as April 7 in several published sources.|
Position of attack on Jason
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