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 on the "Galileo Galilei" failed, greatly affecting the accuracy of shooting. "Moonstone" also moved too fast for the submarine's crew to aim their cannons effectively. After about ten minutes "Galileo Galilei" was hit for the first time, wounding commander Nardi and killing several people around him. Shortly thereafter, the bow cannon was hit killing the gun crew including second in command. The cannon continued shooting, however, under command of Ensign Mazzucchi. The aft cannon soon jammed, and then another salvo from "Moonstone" killed all those on the conning tower including Nardi. The bow cannon continued shooting until arrived at the