The Rosolino Pilo class developed the Indomito pattern into the last Italian destroyer design ordered before World War I. Pasquale Cattolica completed much of the design work before leaving office in July 1913, and Enrico Millo continued that direction when construction began the following month. Maximum displacement reached 900 tons. Armament included 76 mm guns, four 450 mm torpedo tubes, and capacity for ten mines, with much of the available space devoted to weapons and machinery. Most entered service in 1915 or 1916, during World War I. The ships were reclassified as torpedo boats after the war.
Chapter · 36:20-38:52
Rosolino Pilo and continuity in prewar destroyer design
Cattolica's design work continued under Millo, producing a larger development of the Indomito pattern that entered service during World War I.