Sindukirti was commissioned on 9 December 1989 in the Soviet Union, with Cdr. Ramdas signing her commissioning orders. She underwent a protracted "medium refit" from June 2006 until May 2015 at the Hindustan Shipyard at Visakhapatnam. The midlife upgrade was projected to be completed in 3 years but numerous delays postponed the submarine's return.[5] Having spent one third of her life in refit, she finally returned to service on 23 May 2015.[6]
Sindhukiriti has a length of 72.6 m (238 ft) overall, a beam of 9.9 m (32 ft) and a draft of 6.5 m (21 ft). She displaces 2,300 t (2,264 long tons) surfaced, 3,100 t (3,051 long tons) submerged and has a maximum diving depth of 300 m (980 ft). The complement is about 68, including 7 officers and 61 sailors.[7][8]
The submarine has a shaft with one seven-blade propeller. It is powered by two diesel generators, each of which produce 1,000 kW (1,300 hp). It also has an electric motor with 5,500–6,800 hp (4,100–5,100 kW) of power. She can achieve a maximum speed of 10–12 knots (19–22 km/h) when on surface and 17–25 knots (31–46 km/h) when submerged.[7]
Sindhukirti was docked at Hindustan Shipyard in June 2006 for a midlife refit which included installation of USHUS sonar and the Klub-S cruise missiles and other hull works. It was originally planned to send her to Russia for the upgrade, like her sister ships Sindhughosh, Sindhuvir, Sindhuratna, and Sindhuvijay. However, it was decided that Sindhukirti would be upgraded indigenously. Hindustan Shipyard was selected for the refit due to political wrangling, against the wishes of the navy staff.[9][10][11][12] HSL had a history of prolonging submarine refits, taking ten years to upgrade each of the Vela-class submarinesVela and Vagli.[13]
Sindhukirti's refit was scheduled for 3 years, but the refit dragged on as problems arose. The ship became known as the dockyard queen.[11] In 2009, AdmiralSureesh Mehta explained, "That kind of expertise did not exist in India before and this is for the first time that we are trying it out here. Instead of sending them to Russia all the way, this one is being offloaded to Hindustan Shipyards. There are some problems in their procurement procedures. It takes a little longer than is expected".[10] While a Russian shipyard would deploy 200 workers in three shifts to complete the refit in two years, HSL deployed only 50 workers to work on Sindhukirti.[13]
After nine years in refit, Sindhukirti finally returned to sea on 23 May 2015 and is currently active.[6]
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