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 were transferred to Massawa in Eritrea where she formed 81st Squadron of VIII Submarine Group. At the time of Italy's entrance into World War II "Galileo Galilei" was stationed at the Italian base of Massawa on the Red Sea being part of the Italian Red Sea Flotilla. On June 10, 1940 the submarine under command of captain Corrado Nardi was ordered to proceed to her area of operation near Aden where she arrived on June 12. In the early morning of June 16, while submerged, she intercepted Norwegian tanker , about 12 miles south of Aden. After surfacing and ordering