Difference between revisions of "Mk.VIII (533 mm)"

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== General info ==
 
== General info ==
 
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* [[Type 93 Model 3 (610 mm)]]: The Type 93 Model 3 has a higher maximum speed (91 km/h), has a much higher maximum range (15 km), and has a much larger explosive mass (998.4 kg TNT equivalence). There is no Torpedo Mode modification available for the Type 93 Model 3.
 
* [[Type 93 Model 3 (610 mm)]]: The Type 93 Model 3 has a higher maximum speed (91 km/h), has a much higher maximum range (15 km), and has a much larger explosive mass (998.4 kg TNT equivalence). There is no Torpedo Mode modification available for the Type 93 Model 3.
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{{Naval special armament table|torpedoes}}
  
 
== Usage in battles ==
 
== Usage in battles ==

Latest revision as of 22:15, 8 November 2024

Introducing Wiki 3.0
Torpedo Mark VIII.jpg

Description

The Mk.VIII torpedo is a British 21-inch (533 mm) torpedo mounted on many destroyers and motor torpedo boats in the British tech tree. Other 21-inch British torpedoes include the Mk.V (533 mm) and the Mk.IX (533 mm).

Vehicles equipped with this weapon

Vehicles equipped with this weapon
Motor gun boats  SGB Grey Fox · SGB Grey Goose
Motor torpedo boats  Brave Borderer · Dark Aggressor · Dark Aggressor TD · Fairmile D (617) · Fairmile D (5001) · HMS Gay Archer · MTB Vosper · MTB Vosper(2) · MTB-422 · MTB-96
  Pfeil
Destroyers  HMS Churchill · HMS Grafton

General info

The Mk.VIII torpedo has a diameter of 533 mm, a length of 6.579 m, and weighs 1,566 kg. Without the Torpedo Mode modification installed, it can travel at a maximum speed of 84 km/h for 4.57 km. With it installed, the maximum range is increased to 6.40 km, but the maximum speed is reduced to 76 km/h.

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 1,566 84 4.57 1 50 TNT 327 327
Yes 1,566 76 6.40 1 50 TNT 327 327

Effective damage

The Mk.IX torpedo carries a 340 kg TNT warhead, which is fairly middling compared to other torpedoes. Destroyers and other smaller vessels can be destroyed by a single hit, but cruisers, especially heavy cruisers, may be able to survive multiple hits, depending on where the hit occurred.

Comparison with analogues

Compared to all other ship-launched torpedoes in the British tech tree:

  • Mark XII: An 18-inch torpedo, the Mark XII has a lower maximum speed (69 km/h), has a lower maximum range (3.2 km), and has a much smaller explosive mass (176 kg TNT equivalence). With the Torpedo Mode modification installed on both, the Mark XII has a slightly lower maximum speed (74 km/h) and has a much lower maximum range (1.37 km).
  • Mark XV: An improved Mark XII, the Mark XV has a larger explosive mass (385 kg TNT equivalence); but it has a lower maximum speed (61 km/h) and has a lower maximum range (3.2 km). with the Torpedo Mode modification installed on both, the Mark XV has a much lower maximum speed (54 km/h) and has a lower maximum range (5 km).
  • Mk.V (533 mm): The earliest of the British 21-inch torpedoes, the Mk.V has a lower maximum speed (74 km/h) and has a smaller explosive mass (305 kg TNT equivalence). With the Torpedo Mode modification installed on both, the Mk.V has a much higher maximum range (12.35 km), but it has a much lower maximum speed (46 km/h).
  • Mk.IX (533 mm): A further development of the 21-inch torpedo, the Mk.IX has a much higher maximum range (9.6 km) and has a larger explosive mass (340 kg TNT equivalence); but it has a lower maximum speed (67 km/h). With the Torpedo Mode modification installed on both, the Mk.IX has a much higher maximum range (12.35 km), but it has a much lower maximum range (56 km/h).

Compared to common torpedoes mounted on destroyers and cruisers among other nations:

  • Mk.15 (533 mm): The Mk.15 has a higher maximum range (5.5 km); but it has a slightly lower maximum speed (83 km/h) and has a smaller explosive mass (224 kg TNT equivalence). With the Torpedo Mode modification installed on both, the Mk.15 has a much higher maximum range (9.15 km), but it has a lower maximum speed (62 km/h).
  • G7a (533 mm): The G7a has a larger explosive mass (358.4 kg TNT equivalence) and has a higher maximum range (6 km); but it has a slightly lower maximum speed (81 km/h). With the Torpedo Mode modification installed on both, the G7a has a much higher maximum range (14 km), but it has a much lower maximum speed (56 km/h).
  • 53-38 (533 mm): The 53-38 has a slightly lower maximum speed (82 km/h), has a lower maximum range (4 km), and has a smaller explosive charge (300 kg TNT equivalence). With the Torpedo Mode modification installed, the 53-38 has a much higher maximum range (10 km), but it has a much lower maximum speed (56 km/h).
  • Type 93 Model 1, Mod 2 (610 mm): The Type 93 Model 1, Mod 2 has a higher maximum speed (91 km/h), has a much higher maximum range (20 km), and has a much larger explosive mass (627.2 kg TNT equivalence). There is no Torpedo Mode modification available for the Type 93 Model 1, Mod 2.
  • Type 93 Model 3 (610 mm): The Type 93 Model 3 has a higher maximum speed (91 km/h), has a much higher maximum range (15 km), and has a much larger explosive mass (998.4 kg TNT equivalence). There is no Torpedo Mode modification available for the Type 93 Model 3.
Name Country
of origin 		Diameter
(mm) 		Mass (kg) Explosive
type 		TNT equivalent
(kg) 		Max speed
(km/h) 		Max range
(km)
12.75 inch Mark 44 USA flag.png 324 235 HBX 54.4 56 5.49
12.75 inch Mark 46 USA flag.png 324 235 TNT 44.5 91 7.30
18 inch Mark XII Britain flag.png 450 702 TNT 176 74 1.37
18 inch Mark XV Britain flag.png 450 817 Torpex 395.2 61 3.20
18 inch Type 38 No.2 B Japan flag.png 450 663 Shimose 104.5 59 2.00
18-inch Mk.7 USA flag.png 450 720 TNT 93 59 3.65
21 in Mk.8 USA flag.png 533 1,252 TNT 146 50 9.14
21 inch Mark I Britain flag.png 533 1,270 TNT 102 56 11.00
21 inch Mk.20 Bidder Britain flag.png 533 821 TNT 89 37 11.00
21 inch Type 43 (1910) Japan flag.png 533 1,187 Shimose 143 50 8.00
45-36NU USSR flag.png 450 951 TNT 200 76 4.00
53-38 USSR flag.png 533 1,615 TNT 300 82 4.00
53-39 USSR flag.png 533 1,780 TNT 317 94 4.00
53-56 USSR flag.png 533 2,000 TNT 400 93 8.00
53-57 USSR flag.png 533 2,000 TNT 306 83 18.00
53-65 USSR flag.png 533 2,070 TNT 300 126 12.00
Bliss-Leavitt Mk.1 USA flag.png 533 680 TNT 91 50 3.66
C/06D Germany flag.png 450 810 TNT 122.6 50 5.90
G6c Germany flag.png 533 1,008 TNT 160 50 5.00
G7 Germany flag.png 500 1,365 TNT 249.6 69 4.00
G7a Germany flag.png 533 1,528 SW39a 358.4 81 6.00
H/8 Germany flag.png 600 2,160 SW39a 268.8 67 6.00
LT 1A/1 Germany flag.png 450 812 TNT 250 74 2.00
Mark 35 USA flag.png 533 803 Torpex 196 50 13.71
Mk.8-3 C/D USA flag.png 533 1,373 TNT 174.2 50 12.35
Mk.13 USA flag.png 569 884 TNT 178 56 5.21
Mk.15 USA flag.png 533 1,559 TNT 224 83 5.50
Mk.16 USA flag.png 533 1,766 Torpex 915.2 85 6.40
Mk.IV Britain flag.png 533 1,454 TNT 234 65 7.30
Mk.IX Britain flag.png 533 1,693 TNT 340 67 9.60
Mk.IX** Britain flag.png 533 1,693 Torpex 587.2 76 10.00
Mk.V Britain flag.png 533 1,736 TNT 305 74 4.57
Mk.VIII Britain flag.png 533 1,566 TNT 327 84 4.57
1909R France flag.png 450 716 TNT 144 61 2.00
Model 1919V France flag.png 550 1,358 Picric acid 261.8 80 2.00
Model 1923DT France flag.png 550 2,100 TNT 308 72 9.00
1926V France flag.png 400 674 TNT 144 81 2.00
L3 France flag.png 550 910 TNT 200 46 5.00
Pattern 1910 USSR flag.png 450 665 TNT 100 54 3.00
Pattern 1912 USSR flag.png 450 810 TNT 100 80 2.00
R.G.F. Mark VI** Britain flag.png 450 700 TNT 134 56 5.49
S.I.170/450X5,25 Italy flag.png 450 860 TNT 170 76 4.00
S.I.270 Italy flag.png 533 1,715 TNT 270 74 4.00
S.I. 250/533,4X7,5 Tipo A Italy flag.png 533 1,781 TNT 250 76 4.00
S.I. 270/533,4X7,2 Tipo I Italy flag.png 533 1,700 TNT 270 89 4.00
S.I. 270/533,4X7,2 Tipo M Italy flag.png 533 1,715 TNT 270 93 4.00
S.I. 270/533X6.84 Tipo L Italy flag.png 533 1,700 TNT 270 93 4.00
Seal DM2A1 Germany flag.png 533 1,370 TNT 250 61 20.00
SET-40 USSR flag.png 400 550 TNT 80 54 8.00
SET-53M USSR flag.png 533 1,480 TNT 100 54 14.00
SET-65 USSR flag.png 533 1,740 TNT 205 74 16.00
SET-72 USSR flag.png 400 730 TNT 80 74 8.00
Type 2 Japan flag.png 450 1,000 Type 97 448 72 3.00
Type 6 Japan flag.png 533 1,432 Shimose 223.3 65 7.00
Type 8 No.2 Japan flag.png 610 2,362 Shimose 380.6 70 10.00
Type 43 Japan flag.png 450 663 Shimose 104.5 48 5.00
Type 44 No.2 Japan flag.png 450 750 Shimose 121 65 4.00
Type 54 model 3 Japan flag.png 533 1,600 TNT 100 44 6.00
Type 72 mod.1 Japan flag.png 533 1,760 TNT 300 120 10.00
Type 89 Japan flag.png 533 1,660 Type 97 384 83 5.50
Type 90 Japan flag.png 610 2,540 Type 97 480 85 7.00
Type 93 Model 1, Mod 2 Japan flag.png 610 2,700 Type 97 627.2 91 20.00
Type 93 Model 3 Japan flag.png 610 2,800 Type 97 998.4 91 15.00
W.200/450X5,75 Italy flag.png 450 930 TNT 200 81 3.00
Whitehead A 110/450 Italy flag.png 450 936 TNT 110 56 4.00

Usage in battles

The Mk.VIII is a fast torpedo, sporting an above-average top speed of 84 km/h with the Torpedo Mode modification and a top speed 76 km/h without. However, its maximum range is small, 4.57 km with and 6.4 km without the Torpedo Mode modification. Its warhead is also only average, at 327 kg TNT.

For motor torpedo boats and other smaller vessels, the Mk.VIII should be used without the Torpedo Mode modification, where the lower maximum range is insignificant in the often short-range engagements, and the higher maximum speed is helpful in making it more difficult for the enemy vessel to evade. On destroyers, the Mk.VIII should be used with the Torpedo Mode modification, since close-range encounters are much less common, and the increased maximum range provides more strategic usefulness, especially in Encounter and Enduring Confrontation game modes, though in this aspect, its small range of 6.4 km leaves much to be desired.

Pros and cons

Pros:

  • Above average maximum speeds

Cons:

  • Short maximum range

History

The 21-inch Mark VIII torpedo was designed in 1925. It had a diameter of 21 inches (533 mm), a length of 21 feet 7 inches (6.579 m), weighed 1,566 kg, and carried a 340 kg TNT warhead. The Mark VIII was the first British torpedo to utilise the burner-cycle engine, an advancement in torpedo technology at the time. In the burner cycle engine, pressurized air was heated and combined with atomised fuel, and then injected and ignited into the combustion chamber at top dead centre (when the piston is furthest away from the crankshaft). Powered by this, the Mark VIII could maintain a speed of 40 knots (74.1 km/h) for 4.57 km.

An improved version Mark VIII** was also developed, which increased the top speed to 45.5 knots (84.3 km/h) and introduced a low-speed setting at 41 knots (75.9 km/h) for 6.4 km. As originally designed, the Mark VIII** carried a 327 kg TNT warhead, though this would be replaced by a 365 kg Torpex warhead in later productions.

The Mark VIII entered service and production in 1927. The Mark VIII** was the primary version used during World War II, mounted on motor torpedo boats and the O-class submarines, as well as any succeeding submarine classes. It remained in service within the Royal Navy as late as 1982, when HMS Conqueror sunk the Argentinian light cruiser ARA General Belgrano during the Falklands War, and would continue to remain in service with other minor navies even further.

Media

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

See also

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

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