Indomito 1914
Insidioso 1941
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| Indomito | ID | Pattison, Napoli | 6.1910 | 10.5.1912 | 1.1913 | stricken 7.1937 | |
| Impavido | IV | Pattison, Napoli | 1.1911 | 22.3.1913 | 11.1913 | stricken 9.1937 | |
| Impetuoso | Pattison, Napoli | 12.1910 | 23.7.1913 | 5.1914 | sunk 10.7.1916 | ||
| Insidioso | IS | Pattison, Napoli | 7.1912 | 30.9.1913 | 7.1914 | stricken 9.1938, reinstated 3.1941, scuttled 10.9.1943 | |
| Intrepido | Pattison, Napoli | 6.1910 | 7.8.1912 | 2.1913 | sunk 4.12.1915 | ||
| Irrequieto | IR | Pattison, Napoli | 6.1910 | 12.12.1912 | 6.1913 | stricken 10.1937 |
|
Displacement normal, t |
672 |
|
Displacement full, t |
770 |
|
Length, m |
72.5 wl 73.0 oa |
|
Breadth, m |
7.30 |
|
Draught, m |
2.40 |
|
No of shafts |
2 |
|
Machinery |
2 Tosi steam turbines, 4 Thornycroft boilers |
|
Power, h. p. |
16000 |
|
Max speed, kts |
30 |
|
Fuel, t |
oil 100 |
| Endurance, nm(kts) | 1200(14) |
|
Armament |
1 x 1 - 120/40 A1891-1910, 4 x 1 - 76/40 A1897, 2 x 1 - 450 TT |
|
Complement |
69 - 79 |
Project history: Project of Indomito class was developed by Pattison under guidance of main designer L. Scaglia in 1912 as answer on appeared in Austro-Hungarian and French navies large destroyers with 100mm main guns. Indomito class ships became the first Italian rigorous destroyers equipped with steam turbines and pure oil-firing boilers. On trials they made 33-35.5kts. For years of the First World War in Italy it has been built 32 destroyers of this class in five groups (Indomito and 4 more "improved" variants), differing from each other basically by the structure and arrangement of armament. All these destroyers were known also under a collective nick "3-funneled destroyers".
Modernizations: 1914, all: - 2 x 1 - 450 TT; + 2 x 2 - 450 TT.
1915 - 1916, all survived: + 10 mines, oil capacity increased to 128t (full displacement was 900t, speed was 27-28kts)
1918 - 1919, all survived: - 1 x 1 - 120/40, 4 x 1 - 76/40; + 5 x 1 - 102/35 S1914-1915, 1 x 1 - 40/39 Vickers-Terni 1917
3/1941, Insidioso: 3 boilers with 2 funnels, 12000shp, 24kts, 758/890t, armament consisted of 1 x 1 - 102/45 Schneider-Armstrong 1917, 2 x 2 - 20/70 Scotti-Isotta Fraschini 1939, 1 x 2 - 13.2/76, 1 x 2 - 533 TT, 2 DCT, complement 75.
Naval service: Intrepido was lost 4.12.1915 off Valona on a mine laid by German submarine UC14. Impetuoso was torpedoed 10.7.1916 by Austrian submarine U17 in the Otranto Straits.
In October, 1929 four survived ships were re-rated as torpedo boats, and stricken in 1937-1938. Insidioso, leaved in the reserve, in March, 1941 was again commissioned after modernization. Being rated as torpedo boat, she some time was used as a target ship for drill of submariners, and then as escort. Insidioso 10.9.1943 was captured at Pola by German troops, renamed TA21 Wildfang, damaged by British aircraft 9.8.1944 and 5.11.1944 sunk at Fiume during repair by Allied bombers.
Indomito 1916
Insidioso 1941
© Ivan Gogin, 2009-14