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fighting ships of the world

REGIA MARINA (ITALY)

TORPEDO SHIPS

INDOMITO destroyers (1913-1914)

Indomito 1914

Insidioso 1941

Name 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

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

Ship 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