Difference between revisions of "Soukou-Tei (Family)"

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The '''Soukou-Tei-class''' (装甲艇, which means "armored boat") or '''AB-Tei-class''' was a type of armored gunboat used by the Imperial Japanese Army in the Second Sino-Japanese War and World War II.
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The '''Soukou-Tei-class''' (装甲艇, "armored boat") or simplified '''AB-Tei-class''' was a type of armored gunboat used by the Imperial Japanese Army in the Second Sino-Japanese War and World War II.
  
 
== Vehicles ==
 
== Vehicles ==
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In 1937, the design was again changed increasing the length to 17.5 meters with 20 tons displacement which allowed it to load munition or infantry and the speed increased to 14 knots; 10 boats of this setup were built. 
 
In 1937, the design was again changed increasing the length to 17.5 meters with 20 tons displacement which allowed it to load munition or infantry and the speed increased to 14 knots; 10 boats of this setup were built. 
  
In 1938, the design was reduced in length to 16.5 meters with 20 tons displacement and a second 57 mm tank gun added; 11 boats of this setup were built by Osaka Iron Works.
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In 1938, the model was scrapped for extra munition or infantry load by shortening it to 16.5 meters and a second 57 mm tank gun was added; 11 boats of this setup were built.
  
In 1939, The final remodel took place. The displacement of the ship was reduced to 16.5 tons and the second 57 mm tank gun removed; 19 boats of this setup were built by Osaka Iron Works.
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In 1939, The final remodel took place. The boat was made lighter at 16.5 tons displacement by removing the second 57 mm tank gun without any additional changes; 19 boats of this setup were built.
  
Due to her slow speed, she was eventually outclassed by the American patrol torpedo boats and a Japanese equivalent was developed: [[Ka-Ro (Family)]].
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As the Soukou-Tei was an escort boat for landing vessels, the Army also wanted develop a faster patrol boat to compete with American PT's, out of this need, they developed the [[Ka-Ro (Family)]].
 
[[Category:Family pages]]
 
[[Category:Family pages]]

Revision as of 16:03, 11 June 2020

The Soukou-Tei-class (装甲艇, "armored boat") or simplified AB-Tei-class was a type of armored gunboat used by the Imperial Japanese Army in the Second Sino-Japanese War and World War II.

Vehicles

Rank I

History

Launched ceremony of "Sakigake" at Ujina port, Hiroshima pref. (1927)

In the 1920's, the Japanese Army started development of a new amphibious assault landing fleet which included vessels such as: 14 meter Daihatsu-class Landing Craft, the world's first landing craft carrier (Shinshū Maru) and other auxiliary vessels. The AB-Tei-class was developed to provide close support for the new line of amphibious assault vessels and was supposed to be transported just like all the other landing craft.

In 1928, the prototype boat was completed and named Sakigake (さきがけ, Pioneer). It was 14.4 meters, displaced 16 tons, initially ran on gasoline, and was armed with two 6.5 mm Type 38 machine guns and one 37 mm "Sniper" gun.

In 1930, the second boat, Kachidoki (勝鬨, Battle Cry), was completed. It was enlarged at from 14.4 meters to 20 meters with a 20 ton displacement, converted to a diesel engine, and its armament was upgraded to one 57 mm Type 90 tank gun  and two 7.7 mm Type 89 'special' machine guns. In 1932, Kachidoki saw action during the landing operation at Shanghai during the January 28 incident where the Kachidoki fired upon Chinese coastal defenses and laying smoke for the landing vessels, the AB-3 Proved very effective as only 2 soldiers died in the landing operation.

AB-Tei No.3 being lifted

In 1933, The third boat got a hull revision to a size of 15.5 meters with 17.5 tons displacement with a new engine for a higher top speed and a more effective way of welding the hull decreasing is mass. It kept the same armament as KachidokiArmored Boat No. 3 (AB-3) was chosen as the final design and 23 additional boats were built (designated AB-4 through AB-26).

In 1937, the design was again changed increasing the length to 17.5 meters with 20 tons displacement which allowed it to load munition or infantry and the speed increased to 14 knots; 10 boats of this setup were built. 

In 1938, the model was scrapped for extra munition or infantry load by shortening it to 16.5 meters and a second 57 mm tank gun was added; 11 boats of this setup were built.

In 1939, The final remodel took place. The boat was made lighter at 16.5 tons displacement by removing the second 57 mm tank gun without any additional changes; 19 boats of this setup were built.

As the Soukou-Tei was an escort boat for landing vessels, the Army also wanted develop a faster patrol boat to compete with American PT's, out of this need, they developed the Ka-Ro (Family).