Difference between revisions of "Mk.13-6 (2,216 lb)"

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== Description ==
 
== 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.''
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<!-- ''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.'' -->
 +
The '''Mk.13-6''' is an American air-dropped torpedo.
  
 
=== Vehicles equipped with this weapon ===
 
=== Vehicles equipped with this weapon ===
 
<!-- ''List out vehicles that are equipped with the weapon.'' -->
 
<!-- ''List out vehicles that are equipped with the weapon.'' -->
  
* {{Specs-Link|avenger_mk1}}
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{{Navigation-Start|Vehicles equipped with this weapon}}
* {{Specs-Link|b_26b_c}}
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* {{Specs-Link|b_26c_france}}
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{{Navigation-First-Line|'''Bombers'''}}{{Specs-Link|tbd-1_1938}}
* {{Specs-Link|pby-5a_raf}}
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{{Navigation-Line|TBF}}{{Specs-Link|tbf-1c}}{{-}}{{Specs-Link|avenger_mk1}}
* {{Specs-Link|pby-5}}
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{{Navigation-Line|PBM}}{{Specs-Link|pbm_5a}}
* {{Specs-Link|pby-5a}}
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{{Navigation-Line|PBY}}{{Specs-Link|pby-5}}{{-}}{{Specs-Link|pby-5a}}{{-}}{{Specs-Link|pby-5a_ussr}}{{-}}{{Specs-Link|pby-5a_raf}}{{-}}{{Specs-Link|pby-5a_late_france}}
* {{Specs-Link|pby-5a_ussr}}
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{{Navigation-Line|SB2C}}{{Specs-Link|sb2c_1c}}{{-}}{{Specs-Link|sb2c_4}}{{-}}{{Specs-Link|sb2c_5_france}}
* {{Specs-Link|sb2c_1c}}
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{{Navigation-Line|B-26}}{{Specs-Link|b_26b_c}}{{-}}{{Specs-Link|b_26c_france}}
* {{Specs-Link|sb2c_4}}
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* {{Specs-Link|sb2c_5_france}}
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{{Navigation-End}}
* {{Specs-Link|tbd-1_1938}}
 
* {{Specs-Link|tbf-1c}}
 
  
 
== General info ==
 
== General info ==
''Tell us about the tactical and technical characteristics of the torpedo.''
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<!-- ''Tell us about the tactical and technical characteristics of the torpedo.'' -->
 +
{| class="wikitable" style="text-align:center" width="100%"
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! colspan="9" | Torpedo characteristics
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|-
 +
! Torpedo Mode !! Mass (kg) !! Maximum speed in water (km/h) !! Travel distance (km) !! Depth stroke (m) !! Arming distance (m) !! Explosive type !! Explosive mass (kg) !! TNT equivalent (kg)
 +
|-
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| {{Annotation|No|'Torpedo Mode' modification uninstalled}} || 844 || 55 || 4.11 || 1 || 50 || Torpex || 181.44 || 290.3
 +
|}
  
 
=== Effective damage ===
 
=== Effective damage ===
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'''Pros:'''
 
'''Pros:'''
 +
 
*
 
*
  
 
'''Cons:'''
 
'''Cons:'''
 +
 
*
 
*
  
 
== 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 Mark 13 was the first aerial torpedo accepted into service by the United States Navy, but it had its teething problems for most of the war. It was not a thoroughly tested design before its adoption and when it entered service, it found itself having a reputation for malfunctioning in almost every manner a torpedo could conceivably fail. As a result, modifications were made to the design such as with the Mk 13-6.
 +
 
 +
The modification of the Mark 13 to the Mark 13-6 Case came from studies by the California Institute of Technology at the Morris Reservoir Naval Weapons Test Site in Los Angeles. By dropping the Mark 13 into the water from a 300-foot slide down the Morris Dam, into the reservoir to study all aspects of the torpedo’s drop into the clear water. The results of the test showed the “low and slow” doctrine of the US Navy’s torpedoes bombers was counterproductive as the flat angle of the torpedo entering the water would damage the mechanism. From these tests, the Mark 13 Mod 2A was created which was more reliable due to less fragile components along with the addition of a water trip delay valve to delay the torpedo from firing when dropped at an altitude higher than 300 feet. The Mark 13-6 uses the Mark 2A as a basis but adds another innovation: the shroud ring.
 +
 
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The idea of the shroud ring ironically came from the Imperial Japanese Navy. To get their Type 91 aerial torpedoes to enter at the proper angle, the IJN added a wood box-shaped tail design to shear off when the torpedo entered the water and ensure it fired at the correct depth. This modification was used to excellent effect during their attack on Pearl Harbor on December 7<sup>th</sup>, 1941, but the US Navy first observed it May 8<sup>th</sup>, 1942. On this date during the Battle of the Coral Sea, Captain Fredrick of the ''USS Lexington'' noticed the addition of the wooden shroud rings on Type 91 torpedoes from B5N “Kate” torpedo bombers. As the Mark 13’s planned replacement, the Mark 25 was still undergoing development, the Mark 13-6 was built as an interim solution to improve the aerial torpedoes of the US Navy. By February 1944, the Mark 13-6 could be dropped at altitudes of 1,000 feet. Further improvements to the design led to the later Mk. 13-6 Case.
  
 
== 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:''
 
* ''reference to the article about the variant of the weapon;''
 
* ''reference to the article about the variant of the weapon;''
* ''references to approximate analogues by other nations and research trees.''
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* ''references to approximate analogues by other nations and research trees.'' -->
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* [[Mk.13-6 Case (2,216 lb)]]
  
 
== External links ==
 
== External links ==
 
''Paste links to sources and external resources, such as:''
 
''Paste links to sources and external resources, such as:''
 +
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
* ''encyclopedia page on the weapon;''
 
 
* ''other literature.''
 
* ''other literature.''
  

Latest revision as of 11:38, 6 August 2024

Description

The Mk.13-6 is an American air-dropped torpedo.

Vehicles equipped with this weapon

Vehicles equipped with this weapon
Bombers  TBD-1
TBF  TBF-1C · ▄Avenger Mk II
PBM  PBM-5A "Mariner"
PBY  PBY-5 Catalina · PBY-5A Catalina · ▂PBY-5A Catalina · ▄Catalina Mk IIIa · ▄PBY-5A Late
SB2C  SB2C-1C · SB2C-4 · ▄SB2C-5
B-26  B-26B · B-26C

General info

Torpedo characteristics
Torpedo Mode Mass (kg) Maximum speed in water (km/h) Travel distance (km) Depth stroke (m) Arming distance (m) Explosive type Explosive mass (kg) TNT equivalent (kg)
No 844 55 4.11 1 50 Torpex 181.44 290.3

Effective damage

Describe the type of damage produced by this type of torpedo (high explosive, splash damage, etc)

Comparison with analogues

Give a comparative description of torpedoes that have firepower equal to this weapon.

Usage in battles

Describe situations when you would utilise this torpedo in-game (vehicle, pillbox, base, etc)

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 Mark 13 was the first aerial torpedo accepted into service by the United States Navy, but it had its teething problems for most of the war. It was not a thoroughly tested design before its adoption and when it entered service, it found itself having a reputation for malfunctioning in almost every manner a torpedo could conceivably fail. As a result, modifications were made to the design such as with the Mk 13-6.

The modification of the Mark 13 to the Mark 13-6 Case came from studies by the California Institute of Technology at the Morris Reservoir Naval Weapons Test Site in Los Angeles. By dropping the Mark 13 into the water from a 300-foot slide down the Morris Dam, into the reservoir to study all aspects of the torpedo’s drop into the clear water. The results of the test showed the “low and slow” doctrine of the US Navy’s torpedoes bombers was counterproductive as the flat angle of the torpedo entering the water would damage the mechanism. From these tests, the Mark 13 Mod 2A was created which was more reliable due to less fragile components along with the addition of a water trip delay valve to delay the torpedo from firing when dropped at an altitude higher than 300 feet. The Mark 13-6 uses the Mark 2A as a basis but adds another innovation: the shroud ring.

The idea of the shroud ring ironically came from the Imperial Japanese Navy. To get their Type 91 aerial torpedoes to enter at the proper angle, the IJN added a wood box-shaped tail design to shear off when the torpedo entered the water and ensure it fired at the correct depth. This modification was used to excellent effect during their attack on Pearl Harbor on December 7th, 1941, but the US Navy first observed it May 8th, 1942. On this date during the Battle of the Coral Sea, Captain Fredrick of the USS Lexington noticed the addition of the wooden shroud rings on Type 91 torpedoes from B5N “Kate” torpedo bombers. As the Mark 13’s planned replacement, the Mark 25 was still undergoing development, the Mark 13-6 was built as an interim solution to improve the aerial torpedoes of the US Navy. By February 1944, the Mark 13-6 could be dropped at altitudes of 1,000 feet. Further improvements to the design led to the later Mk. 13-6 Case.

Media

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

See also

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • other literature.


Torpedoes
USA 
450 mm  Mk.7
533 mm  Bliss-Leavitt Mk.1 · Mark 35 · Mk.8 · Mk.8-3 C/D · Mk.15 · Mk.16
569 mm  Mk.13 · Mk.13-6 · Mk.13-6 Case
Germany 
324 mm  Mark 44
450 mm  C/06D · LT 1A/1 · F5W · F5b
500 mm  G7 · G6c
533 mm  G7a · Seal DM2A1
600 mm  H/8
USSR 
400 mm  SET-40 · SET-72
450 mm  Pattern 1910 · Pattern 1912 · 45-36NU · 45-36AN · 45-36MAN
533 mm  53-38 · 53-39 · 53-56 · 53-57 · 53-65 · SET-53M · SET-65
Britain 
450 mm  R.G.F. Mark VI** · Mark XII · Mark XV
533 mm  Mark I · Mk.IV · Mk.V · Mk.VIII · Mk.IX · Mk.IX** · 21 inch Mk.20 Bidder
Japan 
324 mm  Mark 46
450 mm  Type 2 · Type 38 No.2 B · Type 43 · Type 44 No.2 · Type 91 Model 2 · Type 91 Model 3
533 mm  Type 6 · Type 43 (1910) · Type 54 Model 3 · Type 72 Model 1 · Type 89
610 mm  Type 8 No.2 · Type 90 · Type 93 Model 1, Mod 2 · Type 93 Model 3
Italy 
450 mm  F200/450 · S.I.170/450X5,25 · W.200/450X5,75 · Whitehead A 110/450
533 mm  S.I.270 · S.I. 250/533,4X7,5 Tipo A · S.I. 270/533,4X7,2 Tipo I · S.I. 270/533X6.84 Tipo L · S.I. 270/533,4X7,2 Tipo M
France 
400 mm  1926DA
450 mm  1909R
550 mm  L3 · Model 1919V · Model 1923DT
Sweden 
450 mm  m/38 · m/41
  † = Aerial torpedo
‡ = Aerial and ship-launched torpedo