She was laid down by Scotts Shipbuilding and Engineering Company, Greenock on 5 May 1942, launched on 28 August 1943 and commissioned on 10 April 1944, with the pennant number U11.

[1] Upon completion of her preparations in Tobermory, the Lark was deployed to defend convoys for Western Command.

The same day, at 10:15 a.m., the German submarine U-968 fired an acoustic torpedo at convoy RA 64 and observed a hit after 6 minutes 20 seconds.

In fact, HMS Lark was hit aft northeast of Murmansk so she was towed into Kola Bay and grounded near Rosta.

[1] HMS Lark was unequipped at Rosta because she was unable to return to the UK under tow.