Difference between revisions of "Mk.13 (569 mm)"

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<!--[[File:AN-M30A1_Sideview.jpg|520px|thumb|left|Side view of an '''{{PAGENAME}}''' bomb.]]''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.''-->
 
<!--[[File:AN-M30A1_Sideview.jpg|520px|thumb|left|Side view of an '''{{PAGENAME}}''' bomb.]]''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.''-->
 
[[File:Torpedo_Mk.13_Sideview.png|700px|thumb|left|Side view of an '''{{PAGENAME}}''' torpedo.]]
 
[[File:Torpedo_Mk.13_Sideview.png|700px|thumb|left|Side view of an '''{{PAGENAME}}''' torpedo.]]
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{| class="wikitable" {| class="wikitable" style="margin-left: auto; margin-right: 0px;"
 +
!colspan = "4"|Data for {{PAGENAME}} torpedo
 +
|-
 +
!colspan = "1"|
 +
!colspan = "1"| Metric
 +
!colspan = "1"| Imperial
 +
|-
 +
| Overall Length
 +
| 4 m
 +
| 161 in
 +
|-
 +
| Body Diameter
 +
| 570 mm
 +
| 22.5 in
 +
|-
 +
| Filling Weight
 +
| 272 kg
 +
| 600 lb
 +
|-
 +
| Total Weight
 +
| 1,005 kg
 +
| 2,216 lb
 +
|-
 +
! colspan = "3"|
 +
|-
 +
| Explosive Filling
 +
| colspan="2;" style="text-align:center;" | Torpex
 +
|-
 +
| Bomb Type
 +
| colspan="2;" style="text-align:center;" | High Explosive
 +
|-
 +
|}
 +
 +
The Mk.13 torpedo was a guinea pig of a torpedo having been the subject of testing and modification since 1925. Used early in World War II, this torpedo failed to operate properly approximately 70% of the time with problems of running cold (dud – not exploding), sinking, not running true (deviating), improper depth or running on the surface. Aircraft were required to fly extremely slow and low when dropping the torpedo as to not damage it on impact with the water and to provide the most stable drop possible, unfortunately, this put the torpedo bomber in a bad position of being an easy target for anti-aircraft guns mounted on enemy ships.
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 +
Extensive testing in 1942 determined that the low and slow approach to the Mk.13 launch was actually counterproductive as it caused the torpedo to “belly-flop” on the water causing problems with its internal components. New modifications were tested which replaced fragile parts and components which were susceptible to damage upon impact with the water. A new study also implemented the addition of “drag rings”, “shroud rings” and box shaped tail stabilizers. These devices served to stabilize the torpedo during higher drops, lower the nose for the initial impact and reduce the depth at which the torpedo dove after impact. The wood drag rings and stabilizers were obliterated on impact with the water which absorbed some of the impact, protecting the torpedo. By 1944 the Mk.13 was essentially a brand new torpedo and was accepted as the best aircraft torpedo in the U.S. inventory at that time and was credited with the sinking of the Japanese battleship Yamato.
 
{{Break}}
 
{{Break}}
 
=== Vehicles equipped with this weapon ===
 
=== Vehicles equipped with this weapon ===
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== General info ==
 
== General info ==
−
* Max drop speed: 205 km/h
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<!--''Tell us about the tactical and technical characteristics of the bomb.''-->
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* Max drop height: 105 m
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* Mass: 2,216 lbs
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{| class="wikitable" style="margin-rigt: auto; margin-right: 0px;"
−
* In water speed: 62 km/h
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!colspan = "4"|General Data for {{PAGENAME}} torpedo
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* Travel distance: 5.72 km
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|-
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* Run depth: 1 m
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!colspan = "1"|
 +
!colspan = "1"| Nautical
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!colspan = "1"| Metric
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!colspan = "1"| Imperial
 +
|-
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| Average Drop Altitude
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|
 +
| 235 m
 +
| 800 ft
 +
|-
 +
| Maximum Drop Altitude
 +
|
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| 730 m
 +
| 2,400 ft
 +
|-
 +
| Average Drop Speed
 +
| 260 kts
 +
| 133 m/s
 +
| 300 mph
 +
|-
 +
| Maximum Drop Speed
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| 410 kts
 +
| 211 m/s
 +
| 470 mph
 +
|-
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| Speed in Water
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| 33.5 kts
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| 17.2 m/s
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| 38.5 mph
 +
|-
 +
| Run Depth
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| 0.54 fathom
 +
| 1 m
 +
| 3.2 ft
 +
|-
 +
| Max Distance
 +
| 3.0 nm
 +
| 5,720 m
 +
| 3.5 mi
 +
|-
 +
| Optimal Drop Angle
 +
| colspan="3;" style="text-align:center;" | 22° - 32°
 +
|}
  
 
=== Effective damage ===
 
=== Effective damage ===
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'''Pros:'''
 
'''Pros:'''
 
* Can be dropped from higher altitudes (800 - 2,000 ft)
 
* Can be dropped from higher altitudes (800 - 2,000 ft)
−
* Can be dropped at higher speeds
+
* Can be dropped at higher speeds (maximum 470 mph (756 kph))
 +
* Higher release increases glide distance, decreases time in water to target
  
 
'''Cons:'''
 
'''Cons:'''

Revision as of 14:07, 19 August 2019

Description

Side view of an Mk.13 (569 mm) torpedo.
Data for Mk.13 (569 mm) torpedo
Metric Imperial
Overall Length 4 m 161 in
Body Diameter 570 mm 22.5 in
Filling Weight 272 kg 600 lb
Total Weight 1,005 kg 2,216 lb
Explosive Filling Torpex
Bomb Type High Explosive

The Mk.13 torpedo was a guinea pig of a torpedo having been the subject of testing and modification since 1925. Used early in World War II, this torpedo failed to operate properly approximately 70% of the time with problems of running cold (dud – not exploding), sinking, not running true (deviating), improper depth or running on the surface. Aircraft were required to fly extremely slow and low when dropping the torpedo as to not damage it on impact with the water and to provide the most stable drop possible, unfortunately, this put the torpedo bomber in a bad position of being an easy target for anti-aircraft guns mounted on enemy ships.

Extensive testing in 1942 determined that the low and slow approach to the Mk.13 launch was actually counterproductive as it caused the torpedo to “belly-flop” on the water causing problems with its internal components. New modifications were tested which replaced fragile parts and components which were susceptible to damage upon impact with the water. A new study also implemented the addition of “drag rings”, “shroud rings” and box shaped tail stabilizers. These devices served to stabilize the torpedo during higher drops, lower the nose for the initial impact and reduce the depth at which the torpedo dove after impact. The wood drag rings and stabilizers were obliterated on impact with the water which absorbed some of the impact, protecting the torpedo. By 1944 the Mk.13 was essentially a brand new torpedo and was accepted as the best aircraft torpedo in the U.S. inventory at that time and was credited with the sinking of the Japanese battleship Yamato.

Vehicles equipped with this weapon

Vehicles equipped with this weapon
Bombers  ▄Avenger Mk II · PBY-5 Catalina · PBY-5A Catalina · ▄Catalina Mk IIIa · ▂PBY-5A Catalina ·
  SB2C-1C · SB2C-4 · ▄SB2C-5 · TBD-1 · TBF-1C
Motor torpedo boats  PT-314 · PT-565 · Thunderbolt (PT-556) · PT-200

General info

General Data for Mk.13 (569 mm) torpedo
Nautical Metric Imperial
Average Drop Altitude 235 m 800 ft
Maximum Drop Altitude 730 m 2,400 ft
Average Drop Speed 260 kts 133 m/s 300 mph
Maximum Drop Speed 410 kts 211 m/s 470 mph
Speed in Water 33.5 kts 17.2 m/s 38.5 mph
Run Depth 0.54 fathom 1 m 3.2 ft
Max Distance 3.0 nm 5,720 m 3.5 mi
Optimal Drop Angle 22° - 32°

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:

  • Can be dropped from higher altitudes (800 - 2,000 ft)
  • Can be dropped at higher speeds (maximum 470 mph (756 kph))
  • Higher release increases glide distance, decreases time in water to target

Cons:

  • Aircraft typically only carry one or two at a time

History

Describe 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: https://wiki.warthunder.com/(Weapon-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />.

Media

Technical operations of U.S. Mk.13 Torpedoes [Historical]

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 weapon;
  • 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.


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

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