Based on the Itallian main armament [http://en.wikipedia.org/wiki/Cannone_da_381/50_Ansaldo_M1934 Cannone da 381/50 Ansaldo M1934]. | Based on the Itallian main armament [http://en.wikipedia.org/wiki/Cannone_da_381/50_Ansaldo_M1934 Cannone da 381/50 Ansaldo M1934]. |