Galileo Galilei was born in Pisa (then part of the Duchy of Florence), Italy, on 15 February 1564, the first of six children of Vincenzo Galilei, a famous lutenist, composer, and music theorist, and Giulia (née Ammannati), who had married in 1562. Galileo became an accomplished lutenist himself and would have learned early from his father a scepticism for established authority, the value of well-measured or quantified experimentation, an appreciation for a periodic or musical measure of time or rhythm, as well as the results expected from a combination of mathematics and experiment. Three of Galileo's five siblings survived infancy. The youngest,
Italian submarine Galileo Galilei and ("General Sanjurjo II"). All four were based at Soller. "Galileo Galilei" conducted several patrols without any success. In February 1938 she returned home, as Italy withdrew their submarines from Spanish service due to international pressure. Upon her return, "Galileo Galilei" was temporarily assigned to the 44th Squadron of the VII Submarine Group based at Taranto, together with "Galileo Ferraris", and the more modern , , , and . During 1939 "Galileo Galilei" and "Galileo Ferraris" were moved to a different location and the 44th Squadron was renamed to 41st Squadron. In March 1940, "Galileo Galilei" together with "Galileo Ferraris"