HMS Umbra (P35)
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HMS Umbra (P35) was a Royal Navy U-class submarine built by Vickers-Armstrong at Barrow-in-Furness. She was commissioned in September 1941 and scrapped in 1946.
She was credited with torpedoing the damaged Italian heavy cruiser Trento on 15 June 1942 and the supply ship Amsterdam on 23 October 1942, both in the Mediterranean Sea.