Cannone da 90/53

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Cannone da 90/53
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Cannone da 90/53
Type Anti-aircraft gun
Place of originItaly
Service history
Used byItaly, Germany, Yugoslavia, Croatia
Wars World War II
Croatian War of Independence
Production history
DesignerAnsaldo
Designed1939
ManufacturerAnsaldo
Produced1 June 1939 - 31 July 1943
No. built539
Specifications (Cannone da 90/53)
Mass8,950 kg (19,730 lb)
Length5.039 m (16 ft 6.4 in)
Barrel  length4.736 m (15 ft 6.5 in) L/53 [1]
Crew6
Shell 90 x 679mm R
Shell weight10.3 kg (23 lb)
Caliber 90 mm (3.54 in)
Elevation -2° to +85°
Traverse 360° [1]
Rate of fire 19 rounds per minute
Muzzle velocity 850 m/s (2,789 ft/s)
Maximum firing range17.4 km (10.8 mi) horizontal
12 km (39,000 ft) ceiling [1]

The Cannone da 90/53 was an Italian-designed cannon used both in an anti-aircraft role and as an anti-tank gun during World War II. It was one of the most successful anti-aircraft guns to see service during the conflict. The naval version of the gun was mounted on Italian battleships of the Littorio-class and the Andrea Doria-class.

Contents

The designation "90/53" meant that the gun had a 90 mm caliber and a barrel 53 caliber-lengths long.

History

In 1938, after a development period, the Ansaldo company produced a new heavy AA gun for the Regia Marina, to replace the obsolescent Škoda 10 cm K10 and K11 used for that role on Italian warships; initially 48 calibers long, it was eventually brought to 50 calibers.

The Cannone da 90/50 Ansaldo Model 1938 and OTO Model 1939 had an autofretted monobloc barrel with a screwed-on breech ring containing the horizontal sliding breech block and seatings for the recoil and run-out cylinders. The most interesting part of the weapon was the single quadriaxial mounting designed for it: those were pre-stabilized, with a complex system controlled by 11 gyros, with two electric motors providing the necessary RPC; the whole complex was enclosed in an oval shielded turret, mainly to protect it from the blast effects from the battleship's main caliber guns. The turret weighed some 20 tons, and the practical rate of fire was 12 rounds per minute. After testing on the armoured cruiser San Giorgio, the 90/50 was fitted on the new Littorio-class battleships and the two Andrea Doria-class battleships being rebuilt, for a respective total of 12 and 10 mountings.

This system has been described as too advanced and ahead of its day, and, while ballistically the gun had good performance, the mountings proved delicate. In the Andrea Doria-class battleships the electrical RPC motors were removed in 1942 because of water damage; on the Littorio-class battleships, where the mountings were placed higher, the RPC was retained. Early rounds tended to be flawed and fragment into very small pieces, reducing their effectiveness, although improved rounds were issued during the war. [2] [3]

After the war, the twelve 90/53 guns from the Italian battleship Vittorio Veneto were assigned to Yugoslavia as a part of war reparations. They were mounted on a coastal artillery battery on island Žirje off Šibenik as a part of the Cold War defense strategy. These guns saw action in September 1991 during the Croatian War of Independence, deterring the Yugoslav People's Army assault on Šibenik and blocking 34 Yugoslav Navy's patrol boats and minesweepers which were later captured by Croatian forces in the inner harbor. [4] [5]

Land version

Cannone da 90/53 on Lancia truck abandoned by Rommel's army in February 1943 An Italian 90-53 gun on a truck mounting joining the rows of derelict Axis vehicles and equipment jettisoned by Rommel's army.jpg
Cannone da 90/53 on Lancia truck abandoned by Rommel's army in February 1943

The Cannone da 90/53, derived from the naval version, [6] was also designed by Ansaldo, with the first examples being produced in 1939. The original plan was for the gun to be manufactured in three variants:

Italian industry was not up to producing these quantities and by the end of production in July 1943 only 539 guns had been delivered, including 48 converted for use on the Semovente 90/53 heavy tank destroyer; some, owing to delays in producing the adequate mountings, were fitted on makeshift ones or on the flatbed of trucks like the Lancia 3Ro and the Breda 52 and were designated Autocannone Breda 52 da 90/53.

Drawing upon the German experience with the comparable 8.8 cm FlaK 18, the gun was also used as field artillery in the indirect fire role or as an anti-tank gun. In the latter role its AP shell could penetrate 140 millimetres (5.5 in) of armour at 500 metres (550 yd), and 120 millimetres (4.7 in) at 1,000 metres (1,100 yd), [7] and possibly up to 206 millimetres (8.1 in), [8] thus being able to destroy any Allied tank it faced in North Africa and mainland italy.

After Italy surrendered, guns captured by Wehrmacht forces were designated 9-cm Flak 41(i) or 9-cm Flak 309/1(i). Some of these guns were used for the air defence of Germany, while others were kept in service in Italy.

Characteristics

See also

Weapons of comparable role, performance and era

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References

  1. 1 2 3 Chamberlain, Peter (1975). Anti-aircraft guns. Gander, Terry. New York: Arco Pub. Co. p. 31. ISBN   0668038187. OCLC   2000222.
  2. ↑ Campbell, p. 341-2
  3. ↑ Bagnasco, p. 64-7
  4. ↑ "Napadi JRV-a na Šibenik" (in Croatian). Retrieved 2 July 2018.
  5. ↑ Marotti, Mario (18 September 2016). "Slabo poznata povijest 90mm topova sa Žirja". Šibenski portal. Retrieved 9 April 2023.
  6. ↑ Bagnasco, p. 66-7
  7. ↑ Cappellano, F.; Battistelli, P.P (2012). Italian medium tanks : 1939-45 . Oxford: Osprey Publ. pp.  35–6. ISBN   9781849087759.
  8. ↑ Riccio, Raphael (2010). Italian Tanks and Combat Vehicles of World War II. Roadrunner. p. 319. ISBN   978-88-6261-141-1.

Bibliography

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