She spent most of the war in the
Mediterranean, where she sank the Italian
cargo ships ,
Francesco Barbaro,
Sacro Cuore,
Emilio Morandi, the Italian transport ship
Manfredo Campiero, and the German cargo ship . She also sank the Italian salvage vessel
Rampino, and picked up her sole survivor, and torpedoed and sank the damaged on 15 June 1942.
Trento had already been damaged by a torpedo from a British
Beaufort aircraft (
No. 217 Squadron RAF based at
Malta). She also attacked the , but her torpedoes missed their target.
Umbra also torpedoed and destroyed the grounded Italian supply ship
Amsterdam on 23 October 1942, and sank the Italian tug
Pronta that was trying to salvage the
Amsterdam. The
Amsterdam had been grounded after being hit by a torpedo in an air attack.
Umbra also damaged the Italian
troop ship Piemonte and the Italian cargo ship
Napoli. The ship was beached and later destroyed by aircraft. She later attacked and damaged the German troop ship
Macedonia north of
Sousse,
Tunisia. The damaged German ship was beached and abandoned. She also launched an attack on the Italian cargo ship
Nino Bixio, but missed her. One of her last actions was to attack the Italian sailing vessels
Nuovo Domenico and
Concetta Falco by gunfire in the
Gulf of Hammamet on 11 January 1943.
Nuovo Domenico was damaged in the attack. She survived the war, was sold for scrap on 9 July 1946, and was broken up at
Blyth. ==References==