Difference between revisions of "Type T-51b"

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(History: add development and war history)
(Edits: Readded section description as comments, Fixed up wordings the best I could to improve coherency, Adapted references at end into coding.)
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== History ==
 
== History ==
The Type Ko MTB (甲型魚雷艇, T-51) is a Japanese large MTB affected by German S-boots.
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<!--Describe the history of the creation and combat usage of the ship 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 If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-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></nowiki></code>, as well as adding them at the end of the article.-->
  
This group separated with two group: No.10 class MTB (T-51a) and No.11 class MTB (T-51b). Currently model is mix of them.
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The Type Ko MTB (甲型魚雷艇, T-51) is a Japanese large MTB inspired by the German S-boots.
  
After complete of No.1 class MTB (T-1), news about activity of S-boot from Europe reached to IJN. They start to design copy of them but they had only simple sketch and one civilian motor boat owned by Mitsui family built by Lürssen (builder of S-boat). In that time they did not had experience to build wood iron mixed large boat, so at first they built one prototype. ("Vessel No.600", later No.10 MTB)
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This boat is separated into two group: No.10 class MTB (T-51a) and No.11 class MTB (T-51b) (Currently, the in-game model is a mix of the two classes' features).
  
No.600 was laid down in July 1942 by Yokohama Yacht Tsurumi factory and completed November 1943. But by the worsening of the war situation, they started mass-production before the test of prototype. Just after they get official detailed drawings of 95-ft type S-boot. Basically design of T-51 and S-boat was same, but they was much to learn.
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After the completion of the No.1 class MTB ([[Type T-1|T-1]]), news about activity of the German [[S-38|Schnellboot (S-boot)]] from Europe reached the Imperial Japanese Navy (IJN). They started to copy the S-boot design, but they had only a simple sketch and one civilian motor boat owned by the Mitsui family built by Lürssen (a builder of S-boot). In that time, the Japanese did not have the experience to produce a wood-and-iron mixed large boat, so at first they built one prototype. ("Vessel No.600", later No.10 MTB)
  
In design of No.600, they simplify lots of part but design of S-boot was well-crafted one so those simplify cause several problems. They took measures but stability of vessel was not enough and so there are difficulty in practicality.
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The No.600 prototype was laid down in July 1942 by Yokohama Yacht Tsurumi factory and completed in November 1943. But because of the worsening of the war situation, they started mass-production the ship design before testing the prototype. Just afterwards, the Japanese receive official detailed drawings of 95-ft type S-boot. Basically, design of future T-51 and S-boat was similar, but there was much for the Japanese to learn.
  
For engine, they equip four Mark 71 Model 6 engines (water-cool, 920 HP) and two shafts. It was copy of engine of Italian MAS-451 type. In first ship, two engine connected with one shaft by the Vulcan coupling. It cause increase of weight so it exceeded planned displacement. Planned trial displacement was 84.2 t but actual trial displacement reached 89.6 t and max speed decreased. Because of it, since second boat, they equip four shaft and four engine to abolish Vulcan coupling. They name second ship to T-51b, and first ship be T-51a.
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In the designing of No.600, the Japanese simplified lots of part and material. Due to how well-crafted the S-boot design was, the simplification caused several problems. Though measures were taken to mitigate the problems, the vessel stability was not enough and so there were difficulties putting the ship into practical use.
  
T-51a had one 25 mm twin machine gun and four 45 cm torpedoes, but T-51b had three 25 mm single machine guns and two torpedoes.  
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No.600 was equipped with four Mark 71 Model 6 engines (water-cooled, 920 HP), which were a copy of the Italian MAS-451 MTB engines. There were two shafts, with two engines connected to one shaft by Vulkan coupling. However, this configuration caused an increase of weight and so the prototype exceeded the planned displacement of 84.2 tons, and instead reached 89.6 tons and so the maximum speed decreased. Because of this, the boat was redesigned into the No.11 class MTB, which eliminated the coupling and so each engine had their own shaft. With this, the single No.10 class design (No.600 prototype) was named the ''T-51a'', with the redesigned No.11 class as the '''T-51b''' that would be the model for subsequent boat numbers.
  
No.10, No.13 and No.16 were built at Yokohama yacht Tsurumi factory, but other boats built by new shipyard, Yokohama yacht Choshi factory. Finally 10 Type Ko MTBs were laid down but only 8 boats were completed(No.10 - No.17). Construction of Type Ko was cancelled in August 1944. No.18 was planned to equip small diesel engine but it was not completed. Construction of Type Ko MTBs were delayed because No.11 class MTBs need to resolve problem discovered during the test of No.10 MTB. Also Mk.71 Mod.6 engine required advanced technology and production of engine was delayed.
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Armaments was also redesigned between the two class. The T-51a had one 25 mm twin machine gun and four 45 cm torpedoes, while the T-51b had three 25 mm single machine guns and two torpedoes.  
  
No.10 MTB was dispatched to Truck island just after completed, but fire broke out and sank due to air raid. Also, No.12 MTB was bring out from Choshi to Yokosuka to equip weapons. But just after completed, she sunk because electric motor spark ignited gasoline and exploded.
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No.10 (T-51a), No.13 and No.16 were built at Yokohama Yacht Tsurumi factory, while the other boats were built by a new shipyard, Yokohama Yacht Choshi factory. A total of ten Type Ko MTBs were laid down, but only 8 boats were completed (No.10 - No.17). Construction of Type Ko was cancelled in August 1944. No.18 was planned to equip a small diesel engine, but it was not completed. The construction of Type Ko MTBs was delayed because the No.11 class MTBs need to resolve problem discovered during the testing of No.10 class MTB. Also the Mk.71 Mod.6 engines required advanced manufacturing technology and so production of engine was also delayed.
  
Other vessels was deployed at Special Attack corps but most of them did not experience the actual battle. Only one boat deployed at Habu port of Izu Oshima attacked enemy submarine.
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No.10 MTB was dispatched to Truk island just after completion, but a fire broke out and sank due to air raid. No.12 MTB was brought out from Choshi to Yokosuka to equip weapons, but just after that was completed, she sunk due to an electric motor spark that ignited the gasoline and subsequently exploded.
  
Also, No.16 MTB equip only two engine. She used space of other engines for hold and used for tender boat of other small MTBs and midget submarines at Kawadana Assault Corps.
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Other vessels was deployed to the Special Attack corps, but most of them did not experience the actual battle. Only one boat deployed at Habu port of Izu Oshima attacked an enemy submarine.
  
-- Makino Shigeru[牧野茂], Fukui Shizuo[福井静雄] (1954) "Navy Shipbuilding Technology Overview[海軍造船技術概要]" pp.716-719
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Also, No.16 MTB equip only two engine. She used space of other engines for hold and used for tender boat of other small MTBs and midget submarines at Kawadana Assault Corps.<ref name="ShigeruNavy" /><ref name="YoshinobuBoat" />
 
 
-- Imamura Yoshinobu [今村好信] (2011) "Story of Japanese Torpedo Boats[日本魚雷艇物語]" Kojin-sha, pp.55-60
 
  
 
== Media ==
 
== Media ==
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* ''encyclopedia page on the ship;''
 
* ''encyclopedia page on the ship;''
 
* ''other literature.''
 
* ''other literature.''
 +
 +
==References==
 +
<references>
 +
<ref name="ShigeruNavy">Makino Shigeru [牧野茂] & Fukui Shizuo [福井静雄], ''Navy Shipbuilding Technology Overview [海軍造船技術概要]'' (Konnichi no Wadaisha, 1987), pp.716-719.</ref>
 +
<ref name="YoshinobuBoat">Imamura Yoshinobu [今村好信], (2011) ''Story of Japanese Torpedo Boats [日本魚雷艇物語]'' (Kojin-sha, 2011) pp.55-60.</ref>
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</references>
  
 
{{Japan boats}}
 
{{Japan boats}}

Revision as of 09:37, 27 January 2020

Rank IV USSR | Premium | Golden Eagles
Tu-1 Pack
jp_t51b.png
Type T-51b
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Show in game

Description

GarageImage Type T-51b.jpg


The Type T-51b is a rank III Japanese motor torpedo boat with a battle rating of 2.3 (AB/RB/SB). It was introduced in Update 1.89 "Imperial Navy".

General info

Survivability and armour

Talk about the vehicle's armour. Note the most well-defended and most vulnerable zones, e.g. the ammo magazine. Evaluate the composition of components and assemblies responsible for movement and manoeuvrability. Evaluate the survivability of the primary and secondary armament separately. Don't forget to mention the size of the crew, which plays an important role in fleet mechanics. Save tips for preserving survivability in the "Use in battle" section.

If necessary, use a graphics template to show the most well-protected or most vulnerable points in the armour.

Mobility

Write about the ship’s mobility. Evaluate its power and manoeuvrability, rudder rerouting speed, stopping speed at full tilt, with its maximum forward speed and reverse speed.

Armament

Primary armament

Provide information about the characteristics of the primary armament. Evaluate their efficacy in battle based on their reload speed, ballistics and the capacity of their shells.

Broadly describe the ammunition available for the primary armament, and provide recommendations on how to use it and which ammunition to choose.

Torpedo armament

Main article: Type 2 (450 mm)

Torpedoes launchers are standard equipment on many ships and boats. Torpedoes are a significant means of defeating an opponent. Evaluate the position of the torpedo launchers, discuss the ammunition available, firing specifics such as dead zones, features of the torpedoes themselves, etc.

Special armament

Main article: Type 95 depth charge

Depth charges, mines, rocket launchers and missiles are also effective in skilled hands and can take an off-guard opponent by surprise. Evaluate the ammunition of this type of armament and rate its performance in combat.

Usage in battles

Describe the technique of using this ship, the characteristics of her use in a team and tips on strategy. Abstain from writing an entire guide – don’t try to provide a single point of view, but give the reader food for thought. Talk about the most dangerous opponents for this vehicle and provide recommendations on fighting them. If necessary, note the specifics of playing with this vehicle in various modes (AB, RB, SB).

Pros and cons

Pros:

  • 4 x torpedoes facing in a forward direction
  • Decent speed to move around the map rather quickly
  • Gun has excellent rotation speed

Cons:

  • Rear gun does not fire in a forward direction, only to the side and rear of the boat

History

The Type Ko MTB (甲型魚雷艇, T-51) is a Japanese large MTB inspired by the German S-boots.

This boat is separated into two group: No.10 class MTB (T-51a) and No.11 class MTB (T-51b) (Currently, the in-game model is a mix of the two classes' features).

After the completion of the No.1 class MTB (T-1), news about activity of the German Schnellboot (S-boot) from Europe reached the Imperial Japanese Navy (IJN). They started to copy the S-boot design, but they had only a simple sketch and one civilian motor boat owned by the Mitsui family built by Lürssen (a builder of S-boot). In that time, the Japanese did not have the experience to produce a wood-and-iron mixed large boat, so at first they built one prototype. ("Vessel No.600", later No.10 MTB)

The No.600 prototype was laid down in July 1942 by Yokohama Yacht Tsurumi factory and completed in November 1943. But because of the worsening of the war situation, they started mass-production the ship design before testing the prototype. Just afterwards, the Japanese receive official detailed drawings of 95-ft type S-boot. Basically, design of future T-51 and S-boat was similar, but there was much for the Japanese to learn.

In the designing of No.600, the Japanese simplified lots of part and material. Due to how well-crafted the S-boot design was, the simplification caused several problems. Though measures were taken to mitigate the problems, the vessel stability was not enough and so there were difficulties putting the ship into practical use.

No.600 was equipped with four Mark 71 Model 6 engines (water-cooled, 920 HP), which were a copy of the Italian MAS-451 MTB engines. There were two shafts, with two engines connected to one shaft by Vulkan coupling. However, this configuration caused an increase of weight and so the prototype exceeded the planned displacement of 84.2 tons, and instead reached 89.6 tons and so the maximum speed decreased. Because of this, the boat was redesigned into the No.11 class MTB, which eliminated the coupling and so each engine had their own shaft. With this, the single No.10 class design (No.600 prototype) was named the T-51a, with the redesigned No.11 class as the T-51b that would be the model for subsequent boat numbers.

Armaments was also redesigned between the two class. The T-51a had one 25 mm twin machine gun and four 45 cm torpedoes, while the T-51b had three 25 mm single machine guns and two torpedoes.

No.10 (T-51a), No.13 and No.16 were built at Yokohama Yacht Tsurumi factory, while the other boats were built by a new shipyard, Yokohama Yacht Choshi factory. A total of ten Type Ko MTBs were laid down, but only 8 boats were completed (No.10 - No.17). Construction of Type Ko was cancelled in August 1944. No.18 was planned to equip a small diesel engine, but it was not completed. The construction of Type Ko MTBs was delayed because the No.11 class MTBs need to resolve problem discovered during the testing of No.10 class MTB. Also the Mk.71 Mod.6 engines required advanced manufacturing technology and so production of engine was also delayed.

No.10 MTB was dispatched to Truk island just after completion, but a fire broke out and sank due to air raid. No.12 MTB was brought out from Choshi to Yokosuka to equip weapons, but just after that was completed, she sunk due to an electric motor spark that ignited the gasoline and subsequently exploded.

Other vessels was deployed to the Special Attack corps, but most of them did not experience the actual battle. Only one boat deployed at Habu port of Izu Oshima attacked an enemy submarine.

Also, No.16 MTB equip only two engine. She used space of other engines for hold and used for tender boat of other small MTBs and midget submarines at Kawadana Assault Corps.[1][2]

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 series of the ship;
  • links to approximate analogues of 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 ship;
  • other literature.

References

  1. Makino Shigeru [牧野茂] & Fukui Shizuo [福井静雄], Navy Shipbuilding Technology Overview [海軍造船技術概要] (Konnichi no Wadaisha, 1987), pp.716-719.
  2. Imamura Yoshinobu [今村好信], (2011) Story of Japanese Torpedo Boats [日本魚雷艇物語] (Kojin-sha, 2011) pp.55-60.


Japan boats
Motor torpedo boats  Type T-1 · Type T-14 · Type T-14 (mod. 1) · Type T-38 · Type T-51a · Type T-51b · PT-15 · PT-808
Motor gun boats  Ha-Go (mod. 1) · Type 4 (mod. 2) · Type 4 (Mod 4) · Asagao (YTE-01) · PG 02
Armoured gun boats  Soukou-Tei · Soukou-Tei No.4
Gunboats  Chidori