Here's a rundown on Indian Light Weight Torpedo development history.
The first ships with 324 mm LWT were Nilgiri class frigates Taragiri & Vindhyagiri with 2x3 324mm TT in the 80's. Thereafter Godavari and Brahmaputra classes also had those tubes.
They carried the Italian A244S torpedoes. Given that a replacement would be needed by year 2000, an indigenous program was started.
The Italians gave us ToT and that was the starting point NSTL Vizag, a DRDO Lab started Project Shenya to develop torpedo core technologies like sonar, warhead, batteries, control system.
The correct Project name is Shenya. Not Shyena or S appended to Hyena
The whole corruption started with a Hindu newspaper article in the 90's that incorrectly referred to the 324 mm LWT as Shenya. Thereafter internet picked up and propagated the nonsense. Someone on Bharat Rakshak twisted the Shenya to S Hyena and it propagated thereafter.
A Pakistani tried to get into Bharat Rakshak but he was caught when he referred to Bangalore as capital of Kerala. Thereafter Bangalore, Kerala became a BR check word to validate a person.
Similarly S Hyena is a validation I use to assess whether a person really knows what he's speaking or picked up something on the internet.
The other serious error people make NAGIN. DRDO NPOL has a project for developing towed array sonar technologies called NAGAN. However, one BR member, probably a Sridevi fan, referred to the sonar as NAGIN. And NAGIN again propagated all over the internet.
The only and authentic NAGIN https://www.youtube.com/watch?v=txOeZmLBUDg
Meanwhile NAGAN was a technology development program and not a sonar.
So S Hyena and NAGIN are check words people in the know use to assess those who boast information picked up from the internet.
Anyways, as a result of R&D in the 80's & 90's, a 324 mm Light Weight torpedo named TAL (Torpedo Advanced Lightweight) entered production at BDL. BDL Annual Report Page 153 lists 2001 as the year TAL production started.https://bdl-india.in/sites/default/file ... 019-20.pdf
As a replacement for TAL after 20 years, another project was started. Its called ALWT (Advanced Light Weight Torpedo).
So, 1980-2000 - Italian A244S
2000-2020 - TAL
2020's onwards hopefully ALWT
A TAL version called LWT-XP was exported to Myanmar.
How to differentiate between TAL and ALWT?
TAL is blunt nosed
ALWT has slightly more ogival nose
TAL has contra rotating propellers. The circle is just a rudder & propeller guard
ALWT has a pumpjet. In this photo you can see the pumpjet, actuating rear fins instead of rudder and also a TAL torpedo in the background that one of the girls is touchingALWT is the first Indian underwater system with a pumpjet
Hopefully the system can be extended to HWT and thereafter actual submarines.
This page has more details of both torpedoes https://www.strategicfront.org/forums/t ... 782/page-3In every image, the names are TAL and ALWT. No Shenya or S Hyena.
So gentlemen, you will lose credibility in any serious discussion if you say Shenya, S Hyena are torpedoes and NAGIN is a towed array sonar.
Just like you will become a laughing stock if you say Bangalore is the capital of Kerala.
Also on the internet & twitter, TAL and ALWT are mixed and mashed up like Bhelpuri.
Hopefully now you would understand the Shenya project, TAL, LWT-XP and ALWT torpedoes clearly.
And Ninjamonkey/AryanWarload/BengalRaider/Soumen - please dont copy the information here to your blog.
BTW what is Shenya? Its a black winged kite found on the East Coast of India. Shenya is its local name. In Sanskrit and Sanskrit derived Bengali, "Shen Drishti" refers to sharp vision. Hence the bird is named Shenya after its sharp vision.
The DRDO Lab NSTL is also based in the East Coast where the Shenya is prevalent.
Its a beautiful white bird with red eyes
Given that Navy and DRDO folks work in remote coastal areas and high seas, their constant companions are beautiful marine wildlife. Hence they name their projects, weapons and sensors after these magnificent creatures.