Large numbers of destroyers and torpedo boats under construction for Italian navy according to the Dutch magazine Marineblad dated 1910-1911 no. 11

An item reported that the six Italian destroyers under construction by Societa officinal e cautieri napoliani C. e. T.T. Pattison, Naples, Italy were to be named Indomite, Impavido, Intrepido, Impetuoso, Irrequieto and Insidioso. The 12 torpedo boats built at the same shipyards were to be named 1PN-12 PN, thee 12 torpedo boats built at M. Odero fu A.e.C., Sestri Ponente were to be named 13 OS-24 OS and the 6 by Societa Gio Ansaldo Armstrong e. S., Sestri Ponente sister ships of the OS-design were to be named 25 AS-30 AS.