She was laid down by Cammell Laird & Co Limited, Birkenhead and launched in March 1941.

She also attacked an Italian convoy in the central Mediterranean, but failed to hit any ships.

[1] On 6 August 1942 Thorn encountered the Italian torpedo boat Pegaso, escorting the steamer Istria from Benghazi, off southern Crete.

Pegaso spotted an escorting aircraft machine-gunning the sea’s surface and moved in to investigate.

Thorn failed to return from the patrol and is believed to have been lost in this attack.