INS Sindhudhvaj (S56) was a Sindhughosh-class submarine of the Indian Navy[2] in service from 1987 until 16 July 2022, when she was decommissioned.[3]

History
NameINS Sindhudhvaj
Commissioned12 June 1987
Decommissioned16 July 2022
General characteristics
Class and typeSindhughosh-class submarine
Displacement
  • 2325 tons surfaced
  • 3076 tons submerged
Length72.6 m (238 ft)
Beam9.9 m (32 ft)
Draught6.6 m (22 ft)
Propulsion
  • 2 × 3,650 hp (2,720 kW) diesel-electric motors
  • 1 × 5,900 hp (4,400 kW) motor
  • 2 × 204 hp (152 kW) auxiliary motors
  • 1 × 130 hp (97 kW) economic speed motor
Speed
  • Surfaced;11 knots (20 km/h)[1]
  • Snorkel Mode; 9 knots (17 km/h)
  • Submerged;19 knots (35 km/h)[1]
Range
  • Snorting: 6,000 mi (9,700 km) at 7 kn (13 km/h)
  • Submerged: 400 miles (640 km) at 3 knots (5.6 km/h)
EnduranceUp to 45 days with a crew of 52
Test depth
  • Operational depth; 240 m (790 ft)
  • Maximum depth; 300 m (980 ft)
Complement52 (incl. 13 Officers)
Armament

The name Sindhudhvaj means "flag bearer at sea". The submarine's crest depicts a grey nurse shark. Sindhudhvaj was the submarine to operationalise several indigenously built systems including the USHUS sonar, the Rukmani and MSS satellite communication systems, the inertial navigation system and the torpedo fire control system.[4]

The submarine also completed a successful mating and personnel transfer with a deep-submergence rescue vehicle. It was the only submarine to be awarded the Chief of the Naval Staff's Rolling Trophy for Innovation by Prime Minister Narendra Modi.[4]

References edit

  1. ^ a b "Rosoboron exports - Project 636".
  2. ^ "Submarines of Indian Navy". Archived from the original on 19 June 2009. Retrieved 5 August 2009.
  3. ^ "INS Sindhudhvaj Decommissioned After 35 Years of Glorious Service to the Nation". Press Information Bureau of India. 17 July 2022. Retrieved 17 July 2022.
  4. ^ a b "INS Sindhudhvaj Decommissioned after 35 Years of Glorious Service to The Nation". Indian Navy. 17 July 2022. Retrieved 19 December 2022.