Trieste was the second of two heavy cruisers built for the Italian Regia Marina (Royal Navy). The ship was laid down in June 1925, was launched in October 1926, and was commissioned in December 1928. Trieste was very lightly armored, with only a thick armored belt, though she possessed a high speed and heavy main battery of eight guns. Though nominally built under the restrictions of the Washington Naval Treaty, the two cruisers significantly exceeded the displacement limits imposed by the treaty. The ship spent the 1930s conducting training cruises in the Mediterranean Sea, participating in naval reviews held for foreign dignitaries, and serving as the flagship of the Cruiser Division. She also helped transport Italian volunteer troops that had been sent to Spain to fight in the Spanish Civil War return to Italy in 1938. The ship saw extensive action during World War II, including the battles of Cape Spartivento and Cape Matapan in November 1940 and March 1941, respectively. Trieste was also employed to escort convoys to supply Italian forces in North Africa; during one of these operations in November 1941, she was torpedoed by a British submarine. On 10 April 1943, while the ship was moored in La Maddalena, Sardinia, she was bombed and sunk by American heavy bombers. Her superstructure was cut away and she was refloated in 1950; the Spanish Navy purchased the hull in 1952, with plans to convert the vessel into a light aircraft carrier, though the plan came to nothing due to the growing costs of the project. She was ultimately broken up by 1959. Design Trieste was long overall, with a beam of and a draft of . She displaced at full load, though her displacement was nominally within the restriction set in place by the Washington Naval Treaty. The ship's superstructure included a large conning tower forward and a smaller, secondary conning position aft. She was fitted with a pair of tripod masts, one just aft of the conning tower and the second further aft. She had a crew of 723 officers and enlisted men, though during the war this increased to 781. Her power plant consisted of four Parsons steam turbines powered by twelve oil-fired Yarrow boilers, which were trunked into two funnels amidships. Her engines were rated at for a top speed of , but on sea trials only reached . That speed could only be reached on