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Facts for Prelims (FFP)

Source: TH

 Context: The Indian Navy and Defence Research and Development Organisation (DRDO) achieved a significant milestone as an indigenous heavy-weight torpedo, Varunastra, successfully engaged an underwater target in a live test on June 6, 2023.

What is a Torpedo?

A torpedo is a self-propelled underwater weapon designed to target and destroy enemy vessels or submarines. It is typically cylindrical in shape and equipped with explosives, propulsion systems, and guidance mechanisms.


About Varunastra:

It is an indigenously designed and developed ship-launched anti-submarine torpedo. It was designed and developed by the Vizag-based Naval Science and Technological Laboratory (NSTL) under the DRDO and is manufactured by Bharat Dynamics Ltd (BDL).


  • It has a maximum speed of 40 knots and a maximum operating depth of 600 m, has a long range with multi-manoeuvring capabilities
  • It features advanced capabilities such as low drift navigational systems, acoustic homing, and autonomous guidance algorithms.

Other types of Torpedos with the Indian navy: Advanced Light Torpedo Shyena (ALT-S); Whitehead A244/S; APR-3E; SET-65E