The Tricheco was an Italian Squalo Class coastal submarine of 810 tons displacement launched in 1930. The Tricheco was powered by two sets of Fiat diesel engines providing a top speed of 16.5 knots surfaced and two electric motors providing a top speed of 9 knots submerged. She carried a complement of 48 and was armed with one 4 inch gun; two 13 mm...