I looked something up Japan Maritime Self-Defense Force.
Type-97 Torpedo(LWT)
It contained within DB3000 database; Weapon ID Number - #314.
But There is some issue from database
Type 97 warhead DB - #16 - Type 97 Torpedo (400 DP) -> It's Light Weight Torpedo
#16 - Type 97 Torpedo (45 DP based on Mk50 ALWT ~ 74.8 DP - based on Mk46 Mod 5)
Weight : 350kg -> 320kg(710 lb) - wiki page
Run characteristics : 5.5 -> 7 minutes(5.5 is too short considering Light Weight Torpedo)
(Picture) Type 97 torpedo(Left) with Mk46 Mod 5 torpedo(Right), April 30 2017 Kanoya Air Base
At the end of the Cold War, Soviet attack submarines are capable of moving higher speed and diving at lower depth, rendering the torpedoes used by US navy and the JMSDF like the Mk-46 torpedo less able to deal with them. So a new type of torpedo needs to be developed to catch up with this development.
https://en.wikipedia.org/wiki/Type_97_l ... do_(G-RX4)
It was used for SH-60K(#2058), P-3C Orion(#351, yr 2000 variants) and 324mm HOS-303 Anti-Submarine torpedo Tubes.
(Picture) SH-60K has armed type 97 torpedo.
https://books.google.co.kr/books?id=BY4 ... 03&f=false
Also It can armed with vertical launching system (Mk41 VLS).
It called Type 07 Vertical Launch Anti-submarine rocket.
Akizuki-class destroyer(#2293), Asahi-class destroyer(#3128) and Maya-class destroyer(Maybe next time) can mounted Type 07 VL-ASROC missile with Mk41 VLS. It include warhead of Type-97 or Type-12 torpedo.(It must be discerned version A[Type 97, 2009] / version B[Type 12, 2012])
length : 4.5m(globalsecurity) ~ 6.535m(wiki - maybe add first stage motor)
span and diameter : 0.38m(globalsecurity) ~ 0.45m(wiki)
weight : 820kg(globalsecurity) ~ 1,284kg(wiki)
range : 28km ~ 30km(almost 15nm)
Anti-submarine missiles Type-07 VL-ASROC
Type-07 VL-ASROC anti-submarine missiles are manufactured in Japan on the basis of American RUM-139 VL-ASROC anti-submarine missiles. Type-07 VL-ASROC is a two-story anti-submarine anti-submarine engine rocket, the first stage motor is a high-speed acceleration motor, the second-stage engine is a solid fuel cruise. Type-07 VL-ASROC has a length of 4.5m, a diameter of 0.38m, a weight of 820 kg and a range of 28 km. The rocket carries a light anti-submarine torpedo Mk-46.
When there is information to detect the coordinates of the operating area of the enemy submarine from the radar system, the information and data on the target coordinates, the trajectory trajectory will be transmitted to the control computer system of ship. From the console, soldiers will carry out missile preparation operations, load target data into missile computer memory and rocket launchers. Inertial navigation system is used when flying to reach the target's location in the database. In a predetermined position on the trajectory trajectory, torpedoes will separate themselves from the missiles and fall into the sea by braking. This will help minimize the sound when falling into the water. After the parachute cut, the torpedo activates the self-guided part to perform the target search and attack operation. The strength of this rocket is to use the rocket's high speed to quickly destroy the submarine when it is detected. Type-07 VL-ASROC often uses multiple missile firing mechanism towards submarine area so the probability of destroying the target is very high. In addition, it also has the ability to self-destruct after a while if the target is not found.
https://www.globalsecurity.org/military ... mament.htm
Asahi class information
https://www.navyrecognition.com/index.p ... jmsdf.html
https://books.google.co.kr/books?id=BY4 ... do&f=false
In 2012, Type-12 Torpedo was introduced by JMSDF. It substitute for Type-97 Torpedo.
SH-60K, P-3, P-1(#2936), 324mm HOS-303 Tubes, Type 07 VL-ASROC can integrate. Nowaday JMSDF used primarily both with Type-97 and Type-12.
And It is optimized for shallow coastal water rather than Type 97 torpedo.
change Sub PoH is 85%, add Performance Details; Band 1, Creep Throttle 35 kt 0.4 fuel points per second
Here is information for Type-12 Torpedo
Introduction
The Type 12 is a modern lightweight torpedo of Japanese origin. It was developed to supplement and eventually replace the Type 97 in Japanese service. During development is was known as the G-RX5. Whereas the earlier Type 97 was developed as a deeper diving torpedo for use in oceans, the Type 12 is reportedly optimized for shallow coastal waters.
Launch platforms
The Type 12 can be launched from surface ships and various ASW aircraft. Either HOS-303 tripple torpedo tube or Type 07 vertical launch ASW rocket are used. Various types of ASW aircraft can drop the Type 12. These include the SH-60K Seahawk, P-3C Orion and indigenious P-1.
https://weaponsystems.net/system/413-Type+12