Draft:Type 90 torpedo
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The Type 90 Pneumatic Torpedo (九〇式空気式魚雷, designated for Imperial Japanese calendar year 2590), also known as the "8th Year Type" (十二年式) was a 610 mm (24 in)-diameter torpedo of the Imperial Japanese Navy (IJN), launched from surface ships. It was later used as the template to develop the more advanced Type 93 oxygen torpedo.
History and development[edit]
The Japanese Navy initially used 533 mm (21.0 in)-diameter torpedoes like most other Navies during this period, making the Type 90 the first-ever 610 mm (24 in)-diameter torpedo put in service. It was initially deployed for the Mutsuki-class destroyers in a 2 triple closed launchers configuration (6 tubes total). It was then used as a 3 triple launchers configuration (9 tubes) on the following Fubuki-class destroyers (and subclasses), and used in a 2 triples launcher configuration (9 tubes) on the Hatsuharu-class destroyers. It was also deployed on some cruisers that would also deploy 610 mm (24 in)-diameter torpedo launchers.
A quadruple tube launcher was also developed for the Shiratsuyu-class destroyers, but all ships fitted with those launchers were now fitted with the newly developed Type 93 torpedo, which was also progressively replacing all Type 90 torpedoes, now obsolete.
It used a standard fuel-compressed air propulsion system and was pneumatically launched from the torpedo tubes. This system was notably improved with the following Type 93 oxygen torpedo.
Specification[edit]
- Lenght: 8.5 m (28 ft)
- Diameter: 610 mm (24 in)
- Range and Speed:
- 20,000 m (22,000 yd) at 28 kn (52 km/h)
- 15,000 m (16,000 yd) at 32 kn (59 km/h)
- 10,000 m (11,000 yd) at 42 kn (78 km/h)[1]
- 7,000 m (7,700 yd) at 46 kn (85 km/h)
The Type 90 weighed about 2,500 kg (5,500 lb)[2], with a high explosive warhead of about 400 kg (880 lb)[3] of TNT [4].
See also[edit]
References[edit]
- ^ At only 38 kn (70 km/h) according to "Japanese Torpedoes". Retrieved 2024-05-04.
- ^ 5,207 lb (2,362 kg) according to "Japanese Torpedoes". Retrieved 2024-05-04.
- ^ 761 lb (345 kg) according to "Japanese Torpedoes". Retrieved 2024-05-04.
- ^ ""酸素魚雷" (Oxygen torpedoes)". 5 September 2023. Retrieved 2024-05-06.
External links[edit]
Category:Torpedoes of Japan
Category:World War II weapons of Japan
Category:World War II naval weapons
Category:Military equipment introduced in the 1930s