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Augusto Riboty 1919

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Carlo Mirabello	MR, MI		Ansaldo, Genova	21.11.1914	21.12.1915	24.8.1916	sunk 21.5.1941
Carlo Alberto Racchia			Ansaldo, Genova	10.12.1914	2.6.1916	21.12.1916	sunk 21.7.1920
Augusto Riboty	RY, RI		Ansaldo, Genova	27.2.1915	24.9.1916	5.5.1917	stricken 1950

Technical data

Displacement normal, t	1784
Displacement full, t	1972
Length, m	101.1 wl 103.4 oa
Breadth, m	9.70
Draught, m	3.30 normal 3.60 full load
No of shafts	2
Machinery	2 Parsons steam turbines, 4 Yarrow boilers
Power, h. p.	44000
Max speed, kts	35
Fuel, t	oil 386
Endurance, nm(kts)	2300(12)
Armament	Carlo Mirabello: 8 x 1 - 102/35 S1914-1915, 2 x 1 - 76/40 Ar1916, 2 x 1 - 6.5/80, 2 x 2 - 450 TT, 100 mines Carlo Alberto Racchia: 1 x 1 - 152/40 A1899, 7 x 1 - 102/35 S1914-1915, 2 x 1 - 76/40 Ar1916, 2 x 1 - 6.5/80, 2 x 2 - 450 TT, 100 mines Augusto Riboty: 1 x 1 - 152/40 A1899, 7 x 1 - 102/35 S1914-1915, 2 x 1 - 76/40 Ar1916, 2 x 1 - 6.5/80, 2 x 2 - 450 TT, 120 mines
Complement	169

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Project history

The ships, which occurrence directly was linked to the effect called in due time by British scout Swift. He did not receive further development in the homeland, but made the big impression upon Italians, in which judgement she ideally approached for actions on the narrow Mediterranean theatre. In 1913-1915 in Italy first scouts of Poerio class were built, with approximately 1000t displacement. Before their completion, in 1913 working out of project of larger ship of this type has begun. Creation of rather solid 5000t scout with light armour was originally provided, however for financial reasons from this "almost a cruiser" have refused in favour of project of much more modest ship designed by Ansaldo (though at that time destroyers of the similar dimensions served only in Chilean and British fleets). Increased, in comparison with Poerio, almost in one and a half time displacement has gone on placing of more powerful machinery, eight (on two more) 102/35mm guns and 2 twin 450mm TTs. In total in 1916-1917 three ships were built. Shortage of light cruisers has forced to install on two ships heavy 152mm guns, however experience has appeared unsuccessful: 6`` guns had low firing rate and besides called strong concussion of the hull. In 1919 they were removed.

These ships were commissioned as scouts, reclassified as light scouts in July, 1921 and as destroyers in September, 1938.

Modernizations

1917, Carlo Mirabello: - 1 x 1 - 102/35; + 1 x 1 - 152/47 G. L/50 K.10

1919, all: - 1 x 1 - 152/40(45); + 1 x 1 - 102/35 T1914

1920 - 1922, both survived: - 8 x 1 - 102/35; + 8 x 1 - 102/45 Schneider-Canet 1917

1922 - 1923, both survived: - 2 x 1 - 76/40; + 2 x 1 - 40/39 Vickers-Terni 1917

1925, Carlo Mirabello: + seaplane (temporarily for a short period)

1942, Augusto Riboty: - 2 x 1 - 102/45, 2 x 1 - 6.5/80; + 1 x 1 - 40/39 Vickers-Terni 1917, 2 x 1 - 8.80

1943, Augusto Riboty: - 2 x 1 - 102/45, 3 x 1 - 40/39, 2 x 2 - 450 TT; + 6 x 1 - 20/70 Oerlikon, DCTs

Naval service

21.7.1920 Carlo Alberto Racchia was sunk on Russian mine off Odessa (Black sea). Carlo Mirabello was lost 21.5.1941 on a mine laid by British minelayer Abdiel in Ionian sea.