 Complete the following phrase:  During her time in the Mediterranean, she sank the Italian merchants Edda and Bologna the former French Monaco, the Italian pilot vessel F 20  Enrica, and the Italian auxiliary minesweeper No. 17Milano. She also damaged the Italian sailing vessel Vale Formoso II, the German former Norwegian tanker Regina, and most significantly, the Italian heavy cruiser Bolzano and the Italian light cruiser Muzio Attendolo during 