Difference between revisions of "20 mm/70 Oerlikon 3S (20 mm)"

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== History ==
 
== History ==
''Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Weapon-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>.''
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The Oerlikon 3S is a powerful and effective 20 mm auto-cannon that served on all sides during World War II. The origin of the Oerlikon goes back to World War I with the Becker M2 20x70RBmm cannon itself an upgrade to a 19mm design that was refined by Spandau Arsenal. Seeing limited use on aircraft of the Luftstreitkräfte (German Air Force), Becker used an advanced primer ignition blowback action to fire at 300 rounds per minute. Germany lost World War I, however, and the terms of the Treaty of Versailles couldn't continue production of it. The design was sold to the Swiss firm SEMAG in 1919 which produced the heavier 20x100RBmm SEMAG L firing at a rate of 350 rpm until the firm went under in 1924.
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After this event, Oerlikon bought all the rights, parts, and engineers and continued production of the Oerlikon L and in 1927 added the Oerlikon S to their production line. The Oerlikon S fires an even larger 20x110RBmm cartridge at a much higher muzzle velocity but at the cost of a slower rate of fire of 280rpm. The Oerlikon 3S was a further improved version of the Oerlikon S. The Italians purchased a small number of these guns in 1941. While superior to their own domestically made 20mm cannons the [[20 mm/65 Breda (20 mm)|20 mm/65 Breda]] and [[20 mm/70 Scotti-Isotta Fraschini mod.1939 (20 mm)|20 mm/70 Scotti-Isotta Fraschini mod.1939]] were not made the standard issue naval anti-aircraft gun during World War II.
  
 
== Media ==
 
== Media ==
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== See also ==
 
== See also ==
 
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
 
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
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* ''reference to the article about the variant of the cannon/machine gun;''
 
* ''reference to the article about the variant of the cannon/machine gun;''
 
* ''references to approximate analogues by other nations and research trees.''
 
* ''references to approximate analogues by other nations and research trees.''
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== External links ==
 
== External links ==
 
''Paste links to sources and external resources, such as:''
 
''Paste links to sources and external resources, such as:''
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* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
 
* ''encyclopedia page on the weapon;''
 
* ''encyclopedia page on the weapon;''

Revision as of 01:41, 15 October 2022

Introducing Wiki 3.0

Description

Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.

Vehicles equipped with this weapon

General info

Tell us about the tactical and technical characteristics of the cannon or machine gun.

Available ammunition

Describe the shells that are available for the weapon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).

Comparison with analogues

Give a comparative description of cannons/machine guns that have firepower equal to this weapon.

Usage in battles

Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.

Pros and cons

Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.

Pros:

Cons:

History

The Oerlikon 3S is a powerful and effective 20 mm auto-cannon that served on all sides during World War II. The origin of the Oerlikon goes back to World War I with the Becker M2 20x70RBmm cannon itself an upgrade to a 19mm design that was refined by Spandau Arsenal. Seeing limited use on aircraft of the Luftstreitkräfte (German Air Force), Becker used an advanced primer ignition blowback action to fire at 300 rounds per minute. Germany lost World War I, however, and the terms of the Treaty of Versailles couldn't continue production of it. The design was sold to the Swiss firm SEMAG in 1919 which produced the heavier 20x100RBmm SEMAG L firing at a rate of 350 rpm until the firm went under in 1924.

After this event, Oerlikon bought all the rights, parts, and engineers and continued production of the Oerlikon L and in 1927 added the Oerlikon S to their production line. The Oerlikon S fires an even larger 20x110RBmm cartridge at a much higher muzzle velocity but at the cost of a slower rate of fire of 280rpm. The Oerlikon 3S was a further improved version of the Oerlikon S. The Italians purchased a small number of these guns in 1941. While superior to their own domestically made 20mm cannons the 20 mm/65 Breda and 20 mm/70 Scotti-Isotta Fraschini mod.1939 were not made the standard issue naval anti-aircraft gun during World War II.

Media

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the article about the variant of the cannon/machine gun;
  • references to approximate analogues by other nations and research trees.

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on the weapon;
  • other literature.


Italy naval cannons
20 mm  20 mm/65 Breda · 20 mm/70 Oerlikon 3S · 20 mm/70 Scotti-Isotta Fraschini mod.1939
37 mm  37 mm/54 Breda Mod.32 · 37 mm/54 Breda Mod.38 · 37 mm/54 Breda Mod.39
40 mm  40 mm/39 Vickers-Terni mod.1915/1917 · 40 mm/39 Vickers-Terni mod.1915/1917, Modif.1930 · 40 mm/70 Breda-Bofors type 107
65 mm  65 mm/64 Ansaldo-Terni Mod.1939
76 mm  76 mm/40 Armstrong mod.1897/1910 · 76 mm/40 Armstrong mod.1897/1912 · 76 mm/40 Ansaldo mod.1917 · 76 mm/45 Schneider mod.1911 · 76 mm/50 Vickers mod.1909 · 76 mm/62 OTO-Melara Compact · 76-mm/62 SMP 3
90 mm  90 mm/50 Ansaldo model 1939
100 mm  100 mm/47 O.T.O. Mod. 1928 · 100 mm/47 O.T.O. Mod. 1937
120 mm  120 mm/45 Canet-Schneider-Armstrong mod.1918-19 · 120 mm/50 Armstrong model 1909 · 120 mm/45 O.T.O. Mod. 1926 · 120 mm/50 Ansaldo mod.1926 · 120 mm/50 O.T.O. Mod.1936
135 mm  135 mm/45 O.T.O. Mod. 1937
152 mm  152 mm/45 Schneider mod.1911 · 152/53 mm Ansaldo mod.1926 · 152/53 mm O.T.O. Mod.1929
203 mm  203 mm/50 Ansaldo mod.1924 · 203 mm/53 Ansaldo mod.1927
305 mm  305 mm/46 Armstrong model 1909 · 305 mm/46 Vickers model 1909
320 mm  320 mm/44 OTO model 1934 · 320 mm/44 Ansaldo model 1936
  Foreign:
20 mm  2 cm/65 Flakvierling 38 (Germany) · 20 mm/70 Oerlikon Mk.II (USA)
40 mm  Bofors L/60 Mark 1 (USA) · Bofors L/60 Mark 3 (USA)
76 mm  76 mm/50 Mk.33 (USA)
127 mm  127 mm/38 Mk.12 (USA)