The Otaria was an Italian Glauco Class ocean-going submarine of 863 tons displacement launched in 1935. The Otaria was powered by two sets of Fiat diesel engines providing a top speed of 17 knots surfaced and 8.5 knots submerged. She carried a complement of 48 and was armed with two 3.9 inch guns; two 13 mm anti-aircraft guns and eight 21 inch torp... Found on http://www.probertencyclopaedia.com/browse/RO.HTM