Difference between pages "18 inch Mark XV (450 mm)" and "18 inch Mark XII (450 mm)"

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{{DISPLAYTITLE:18-inch Mark XV Torpedo}}
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{{DISPLAYTITLE:18-inch Mark XII torpedo}}
[[File:Torpedo Mark XV.jpg|thumbnail|right|x250px|]]
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[[File:Torpedo Mark XII.jpg|thumbnail|right|x250px|]]
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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.'' -->
 
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The '''18-inch Mark XII''', or simply '''Mark XII''', is a British torpedo. Although designed for use as a aerial launch torpedo, it is used on some early Motor Torpedo Boats (MTBs), such as the [[MTB-1 1 series]].
The '''18-inch Mark XV''', or simply '''Mark XV''', is a British torpedo. It is used as both an aerial torpedo on some torpedo bombers and as a ship launched torpedo on some Motor Torpedo Boats (MTBs).
 
  
 
=== 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|b_48_firecrest}}
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* {{Specs-Link|firebrand_tf4}}
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{{Navigation-Start|Vehicles equipped with this weapon}}
* {{Specs-Link|wyvern_s4}}
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* {{Specs-Link|uk_fairmile_d_697_800}}
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{{Navigation-First-Line|'''Twin-engine fighters'''}}{{Specs-Link|beaufighter_mk6c}}{{-}}{{Specs-Link|beaufighter_mkx}}{{-}}{{Specs-Link|beaufighter_mk21}}
* {{Specs-Link|uk_fairmile_d_5001_5029}}
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 +
{{Navigation-Line|'''Bombers'''}}{{Specs-Link|beaufort_mkviii}}{{-}}{{Specs-Link|hp52_hampden_tbmk1}}{{-}}{{Specs-Link|hp52_hampden_tbmk1_ussr_utk1}}{{-}}{{Specs-Link|swordfish_mk1}}{{-}}{{Specs-Link|swordfish_mk2}}
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{{Navigation-Line| }}{{Specs-Link|wellington_mk1c}}{{-}}{{Specs-Link|wellington_mk1c_late}}{{-}}{{Specs-Link|wellington_mk3}}{{-}}{{Specs-Link|wellington_mk10}}
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{{Navigation-Line|'''Motor torpedo boats'''}}{{Specs-Link|uk_mtb_1series}}{{-}}{{Specs-Link|uk_mtb_2series}}
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{{Navigation-End}}
  
 
== 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.'' -->
The Mark XV is a mid-war torpedo. It was deigned for both aerial use and use on torpedo boats. Being an aerial torpedo it is smaller than the 21 inch (53.3 mm) torpedoes designed exclusively for use on ships.
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The Mark XII is a relatively early torpedo. Designed for aerial use, it has a lower weight and explosive mass than some other torpedoes, however it is relatively fast in the water.
  
 
{| class="wikitable" style="text-align:center" width="100%"
 
{| class="wikitable" style="text-align:center" width="100%"
! colspan="9" | Torpedo characteristics
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! colspan="9" | 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)
 
! 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)
 
|-
 
|-
| {{Annotation|No|'Torpedo Mode' modification uninstalled}} || 817 || 61 || 3.20 || 1 || 50 || Torpex || 247 || 395.2
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| {{Annotation|No|'Torpedo Mode' modification uninstalled}} || 702 || 50 || 3.20 || 1 || 50 || TNT || 176 || 176
 
|-
 
|-
| {{Annotation|Yes|'Torpedo Mode' modification installed}} || 817 || 54 || 5.02 || 1 || 50 || Torpex || 247 || 395.2
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| {{Annotation|Yes|'Torpedo Mode' modification installed}} || 702 || 74 || 1.37  || 1 || 50 || TNT || 176 || 176
 
|}
 
|}
  
The naval version of the torpedo has an optional "Torpedo Mode" modification which increases the range from 3.2 km to 5 km, but reduces the speed by 7 kph, bringing it to 54 kph.
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The naval version of the torpedo has an optional "Torpedo Mode" modification which decreases the range from 3.2 km to 1.37 km, but increases the speed by 7 m/s, bringing it to 74 km/h.  
  
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
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! Max speed (m/s)
 
! Max speed (m/s)
 
|-
 
|-
| +1828 || -7
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| -1829|| +7
 
|-
 
|-
 
|}
 
|}
  
 
=== Effective damage ===
 
=== Effective damage ===
<!--''Describe the type of damage produced by this type of torpedo (high explosive, splash damage, etc)''-->
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<!-- ''Describe the type of damage produced by this type of torpedo (high explosive, splash damage, etc)'' -->
The increased warhead size compared to the [[Mark XII]], means that the it is capable of killing just about any player controlled ships with a single hit. It is sometimes possible for some cruisers to survive a hit from a Mark XV, but this is rare.
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Like other torpedoes, when launched from a ship, the Mark XII can destroy just about anything smaller than a destroyer with a single hit (or even a near miss). It is possible for some destroyers to survive a hit from a ship launched Mark XII torpedo, and cruisers can almost always take multiple hits from a Mark XII without being destroyed (the torpedo will still start major fires and hull breaches, but won't instantly hull-break the ship).
 +
 
 +
Air launched Mark XIIs seem to be more powerful and can often destroy cruisers (of the player controlled variety) in a single hit.
  
 
=== Comparison with analogues ===
 
=== Comparison with analogues ===
<!--''Give a comparative description of torpedoes that have firepower equal to this weapon.''-->
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<!-- ''Give a comparative description of torpedoes that have firepower equal to this weapon.'' -->
Compared to the earlier [[Mark XII]] torpedo the Mark XV is slower but has a much more powerful warhead (more than twice the size).
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The closest comparison to the Mark XII (with regards to naval battles) is the German [[LT 1A/1]] (also a 45 cm torpedo found at reserve rank). By comparison, the Mark XII is much faster, however the German torpedo has a larger warhead. The Japanese [[Type 2]] (a 45 cm torpedo found on the Japanese reserve ship) is an all round better torpedo, being both faster and having a larger warhead.
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Compared to the larger American [[Mk.8-3 C/D]] 53 cm torpedo (found at reserve rank), and German [[G7a]] the Mark XII has much better speed but a smaller warhead.
  
 
== Usage in battles ==
 
== Usage in battles ==
<!--''Describe situations when you would utilise this torpedo in game (vehicle, pillbox, base, etc)''-->
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<!-- ''Describe situations when you would utilise this torpedo in-game (vehicle, pillbox, base, etc)'' -->
When dropped from aircraft the MArk XV has a much better speed range than the [[Mark XII]], being able to be dropped at speeds up to 443 kph (compared to 281 kph), however the max drop altitude is only marginally improved to 122 m.
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The Mark VII is relatively fast compared to other low rank torpedoes in naval battles and has a compatible range, allowing you to hit further away targets easier.
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 +
When dropped from aircraft the characteristics of the Mark XII are not ideal. You are required to drop below 105 m and decrease your speed to below 281 km/h. Contemporary counterparts, such as the US' [[Mk.13-1 Case (1,927 lb)|Mk.13-1 Case]] or the USSR [[45-36AN (450 mm)]] have better airdrop characteristics; however, when it comes to aerial torpedoes, its successor, the [[18 inch Mark XV (450 mm)]] solves this by incrementing its drop speed maximum to 443 km/h, but its altitude maximum is only incremented to 122 m.  
  
 
=== Pros and cons ===
 
=== Pros and cons ===
<!--''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.''-->
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<!-- ''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.'' -->
 +
 
 
'''Pros:'''
 
'''Pros:'''
* Large warhead for a 45 cm torpedo
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* Better airdrop characteristics than the [[Mark XII]]
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* Good speed, enhanced when Torpedo Mode is used.
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* Average range, allowing for having a bit of distance towards a target.
  
 
'''Cons:'''
 
'''Cons:'''
* Slower than the [[Mark XII]]
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 +
* Poor airdrop characteristics, meaning the aircraft needs a slower (under 281 km/h) and lower (under 105m) approach towards its target if there is a need to aim, being vulnerable to defensive fire.
 +
* Slowest in comparison to other air-dropped torpedoes.
 +
* Below average explosive mass, may not always guarantee full destruction of a bigger player vessel.
  
 
== History ==
 
== 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: <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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<!-- ''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 XII was designed in 1935 (and entered service in 1937) as an aerial torpedo for use by the Fleet Air Arm and RAF Coastal Command. It was a development of the 18-inch Mark XI, which had a larger 211 kg warhead (compared to 176 kg on the Mark XII), but a shorter 2,300 m range and lower speed of 35 knots (65 km/h). The Mark XII reduced the warhead size, but increased the speed and range to 69 km/h at 3,000 m range or 74 km/h at 1,400 m range.
  
The Mark XV entered service in 1942 with the Fleet Air Arm, RAF Coastal Command and Royal Navy. It was the first 18-inch torpedo to use Torpex (short for torpedo explosive) instead of TNT. Torpex is 50% more powerful than TNT by mass.
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The torpedo was 4.95 m long, 450 cm wide and weighed 702 kg. It was powered by a 140 hp burner-cycle engine.
  
 
== Media ==
 
== Media ==
''An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.''
+
''Excellent additions to the article would be video guides, screenshots from the game, and photos.''
  
 
== 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.''
 
* ''references to approximate analogues by other nations and research trees.''
  
 
== External links ==
 
== External links ==
<!--Paste links to sources and external resources, such as:
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<!-- ''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;''
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* ''other literature.'' -->
* ''other literature.''-->
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* [[Wikipedia:British_18-inch_torpedo|[Wikipedia<nowiki>]</nowiki> British 18-inch torpedo]]
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* [[Wikipedia:British_18-inch_torpedo|[Wikipedia] British 18-inch torpedo]]
  
 
{{Torpedoes}}
 
{{Torpedoes}}

Latest revision as of 10:46, 16 February 2023

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Torpedo Mark XII.jpg

Description

The 18-inch Mark XII, or simply Mark XII, is a British torpedo. Although designed for use as a aerial launch torpedo, it is used on some early Motor Torpedo Boats (MTBs), such as the MTB-1 1 series.

Vehicles equipped with this weapon

Vehicles equipped with this weapon
Twin-engine fighters  Beaufighter Mk VIc · Beaufighter Mk X · Beaufighter Mk 21
Bombers  Beaufort Mk VIII · Hampden TB Mk I · ▂Hampden TB Mk I · Swordfish Mk I · Swordfish Mk II
  Wellington Mk Ic · Wellington Mk Ic/L · Wellington Mk III · Wellington Mk X
Motor torpedo boats  MTB-1(1) · MTB-1(2)

General info

The Mark XII is a relatively early torpedo. Designed for aerial use, it has a lower weight and explosive mass than some other torpedoes, however it is relatively fast in the water.

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 702 50 3.20 1 50 TNT 176 176
Yes 702 74 1.37 1 50 TNT 176 176

The naval version of the torpedo has an optional "Torpedo Mode" modification which decreases the range from 3.2 km to 1.37 km, but increases the speed by 7 m/s, bringing it to 74 km/h.

Torpedo mode specification changes
Max distance (m) Max speed (m/s)
-1829 +7

Effective damage

Like other torpedoes, when launched from a ship, the Mark XII can destroy just about anything smaller than a destroyer with a single hit (or even a near miss). It is possible for some destroyers to survive a hit from a ship launched Mark XII torpedo, and cruisers can almost always take multiple hits from a Mark XII without being destroyed (the torpedo will still start major fires and hull breaches, but won't instantly hull-break the ship).

Air launched Mark XIIs seem to be more powerful and can often destroy cruisers (of the player controlled variety) in a single hit.

Comparison with analogues

The closest comparison to the Mark XII (with regards to naval battles) is the German LT 1A/1 (also a 45 cm torpedo found at reserve rank). By comparison, the Mark XII is much faster, however the German torpedo has a larger warhead. The Japanese Type 2 (a 45 cm torpedo found on the Japanese reserve ship) is an all round better torpedo, being both faster and having a larger warhead.

Compared to the larger American Mk.8-3 C/D 53 cm torpedo (found at reserve rank), and German G7a the Mark XII has much better speed but a smaller warhead.

Usage in battles

The Mark VII is relatively fast compared to other low rank torpedoes in naval battles and has a compatible range, allowing you to hit further away targets easier.

When dropped from aircraft the characteristics of the Mark XII are not ideal. You are required to drop below 105 m and decrease your speed to below 281 km/h. Contemporary counterparts, such as the US' Mk.13-1 Case or the USSR 45-36AN (450 mm) have better airdrop characteristics; however, when it comes to aerial torpedoes, its successor, the 18 inch Mark XV (450 mm) solves this by incrementing its drop speed maximum to 443 km/h, but its altitude maximum is only incremented to 122 m.

Pros and cons

Pros:

  • Good speed, enhanced when Torpedo Mode is used.
  • Average range, allowing for having a bit of distance towards a target.

Cons:

  • Poor airdrop characteristics, meaning the aircraft needs a slower (under 281 km/h) and lower (under 105m) approach towards its target if there is a need to aim, being vulnerable to defensive fire.
  • Slowest in comparison to other air-dropped torpedoes.
  • Below average explosive mass, may not always guarantee full destruction of a bigger player vessel.

History

The Mark XII was designed in 1935 (and entered service in 1937) as an aerial torpedo for use by the Fleet Air Arm and RAF Coastal Command. It was a development of the 18-inch Mark XI, which had a larger 211 kg warhead (compared to 176 kg on the Mark XII), but a shorter 2,300 m range and lower speed of 35 knots (65 km/h). The Mark XII reduced the warhead size, but increased the speed and range to 69 km/h at 3,000 m range or 74 km/h at 1,400 m range.

The torpedo was 4.95 m long, 450 cm wide and weighed 702 kg. It was powered by a 140 hp burner-cycle engine.

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 weapon;
  • references to approximate analogues by other nations and research trees.

External links


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