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USHUS (sonar)

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Indian submarine sonar system

USHUS is an Integrated Submarine Sonar System developed by the Naval Physical and Oceanographic Laboratory (NPOL) of the Defence Research and Development Organisation (DRDO) of India and manufactured by Bharat Electronics Limited (BEL). It has been developed for use in submarines of the Indian Navy, especially for Sindhughosh-class submarines. Some reports also suggest that Arihant-class nuclear ballistic missile submarines are also equipped with USHUS system. USHUS replaces Russian systems like MGK-400 and MGK-519 sonars on Indian submarines.

Design and description

USHUS is a multipurpose integrated sonar suite used for detecting and tracking enemy submarines, surface vessels, and torpedoes as well as for underwater communication and obstacles avoidance operations. The sonar capabilities of includes active and passive sonar surveillance, underwater communication and is capable of interception and. The sub-systems of the sonar includes Active Sonar Array, Passive Sonar Array, Intercept Sonar Array (low to medium frequency), Obstacle Avoidance System and Underwater Telephony. The USHUS-2 variant has a detection range of 30 km.

The team developing the sonar was awarded the AGNI Award for self-reliance by the Prime Minister of India in May 2007.

Production

The production of the sonar is done by Bharat Electronics (BEL) at its Bengaluru unit, after transfer of technology from NPOL. NPOL continues to provide technical consultancy and support. The Indian Ministry of Defence signed a contract worth ₹167 crore with BEL for the delivery of the sonars for four Kilo-class submarines between 2003 and 2007. Initially one sonar system was installed and integrated in Russia and other system was installed on board an Indian submarine.

CAG report

A CAG audit report filed in December 2012 criticised the program for the delays, and mentioned that by then, only three submarines were upgraded with the sonar, and two of those had completed sea trials. The report also stated that due to delays in implementing the upgrade, a large portion of the sonar's technical life had expired. In 2005, two submarines were outfitted, of which one completed sea trial in January 2011. In 2008, the third submarine was upgraded and it completed the trial in December 2011.

Current status

Indian Nuclear Submarine Project starting with INS Arihant (ATV-1) include the advanced USHUS sonar system.

By April 2013, five Sindhughosh class submarines of the navy were upgraded to include the USHUS system. They are, in order of their upgrade: INS Sindhuvir (S58), INS Sindhudhvaj (S56), INS Sindhuvijay (S62) and INS Sindhurakshak (S63). INS Sindhukirti (S61) was upgraded in India at Hindustan Shipyard. The remaining submarines of the class are expect to follow.

As of 2024, USHUS-1 has been installed on 5 of the Sindhughosh-class submarines whereas USHUS-2 variant of the sonar system is expected to be installed on INS Sindhughosh (S55), INS Sindhuraj (S57) and INS Sindhuratna (S59).

See also

References

  1. Annual Report. Ministry of Defence, India. 2007. p. 139.
  2. ^ "Navy's sonar project falls flat; draws flak from CAG". Deccan Herald. Retrieved 13 June 2013.
  3. "DRDO gets it right when it's unlike DRDO". Indian Express. 27 November 2006. Retrieved 13 June 2013.
  4. Sakhuja, Vijay (2011). Asian maritime power in the 21st century : strategic transactions : China, India and Southeast Asia. Singapore: Institute of Southeast Asian Studies. p. 101. ISBN 978-9814311090.
  5. ^ "Arihant : India's Ambitious Nuclear Submarine Project". India Strategic. Retrieved 13 June 2013.
  6. "INS Arihant makes NPOL scientists proud". The New Indian Express. 15 May 2012. Archived from the original on 29 October 2013. Retrieved 13 June 2013.
  7. "SSBN Arihant Class Submarine, India". Naval Technology. Retrieved 13 June 2013.
  8. Asia Pacific Defence Reporter. Asia-Pacific Defence Publications. 2005. p. 139.
  9. "The Indian Navy awaits the nine ATAS which were cleared by DAC in 2017". Force India. Retrieved 23 August 2024.
  10. "The Indian Navy awaits the nine ATAS which were cleared by DAC in 2017". Retrieved 23 August 2024.
  11. "USHUS - 2 | Defence Research and Development Organisation - DRDO, Ministry of Defence, Government of India". www.drdo.gov.in. Retrieved 23 August 2024.
  12. "Integrated Submarine Sonar (USHUS)". BEL. Retrieved 23 August 2024.
  13. @delhidefence (18 April 2018). "Ushus-2 Submarine Sonar Suite model on display at DefExpo in Chennai" (Tweet). Retrieved 23 August 2024 – via Twitter.
  14. "New Sonar system to boost Navy's warfare capability". The Hindu. 2 July 2008. Archived from the original on 5 July 2008. Retrieved 13 June 2013.
  15. "Naval Systems - USHUS". DRDO. Retrieved 13 June 2013.
  16. Sutton, H. I. (5 May 2021). "5 Years Of Submarine Secrecy: India's Unique Arihant Class Is Still In Hiding". Naval News. Retrieved 23 August 2024.
  17. "INS Sindhurakshak arrives in India". IndRus. 29 April 2013. Retrieved 13 June 2013.
  18. "Russia hands over to India refitted sub". MSN India. 27 January 2013. Archived from the original on 29 October 2013. Retrieved 13 June 2013.
  19. Himanshu (23 August 2024). "DRDO to Upgrade Sonar Capabilities of Indian Navy's Kilo-Class Submarines". PUNE.NEWS. Retrieved 23 August 2024.
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