It is nicknamed PIG coz it is extremely difficult to maneuver.
http://76.12.160.15/ships/detail.asp?ship_id=Maiale-Pig-Human-Torpedo
Thanks for the link, makes good reading. If you want more information on the SLC, check out this book:
I Mezzi d'Assalto della Xa Flottiglia MAS 1940 - 1945 by Erminio Bagnasco and Marco Spertini, Albertelli, Parma, 1991-2005.
The three teams were:
Durand De La Penne/ Bianchi and Marceglia/ Schergat who help to sink the H.M.S. Valiant and H.M.S. Queen Elizabeth while Martellotta/ Marino sank the tanker Saratoga after they could not find the aircraft carrier they were suppose to sink. OF all these men, I believe only Mr. Bianchi is alive and just celebrated his 99th birthday last Saturday (I stand corrected on this).
The Naval engineers who came up with the idea for the SLC are Teseo Tesei and Elios Toschi.