British trawler Casoria sunk after striking mine according to the Secret Admiralty Weekly Intelligence Summary Nr. 63 for the week ending 28 February 1920

An item reported that at 12:30 o’clock on 26 February the British trawler Casoria of Grimsby struck a mine on 25 miles east north east of Flamborough Head. There were no casualties.

Source

The National Archives CAB-24-99-82. Weekly appreciation of matters of naval interest for the week ended 28th February 1920