Designed in parallel with the s, the Pisani class was larger accommodate more fuel and give them more range. They displaced 866LT surfaced and 1040LT submerged. The submarines were 68.2m (223.8feet) long, had a beam of 6.090NaN0 and a draft of 4.93m (16.17feet). They had an operational diving depth of 90m (300feet). Their crew numbered 48 officers and enlisted men.[1]
For surface running, the boats were powered by two 15000NaN0 diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 550hp electric motor. They could reach 15kn on the surface and underwater. On the surface, the Pisani class had a range of 5000nmi at ;[1] submerged, they had a range of 70nmi at .[2]
The boats were armed with six 53.3cm (21inches) torpedo tubes, four in the bow and two in the stern for which they carried a total of nine torpedoes. They were also armed with a single 102mm deck gun forward of the conning tower for combat on the surface. Their anti-aircraft armament consisted of two 13.2adj=onNaNadj=on machine guns.[1]
Giovanni Bausan was laid down by Cantiere Navale Triestino in their Trieste shipyard on 27 January 1926, launched on 24 March 1928, and completed on 15 September 1929.[3]
. Fraccaroli . Aldo . Italian Warships of World War II . 1968 . Ian Allan . Shepperton, UK . 0-7110-0002-6. Aldo Fraccaroli.
. Chronology of the War at Sea 1939–1945: The Naval History of World War Two. Naval Institute Press. Annapolis, Maryland. 2005. Third Revised. 1-59114-119-2. Jürgen Rohwer.