Vessel Type: Submarine, Type 641.
Names & Pennant Numbers with commission dates:
INS Vela S40 (31 August 1973)
INS Vagli S42 (10 August 1974)
Names & Pennant Numbers with commission dates:
Kalvari S23 (08 December 1967) - decommissioned on 31 May 1996
Khanderi S22 (06 December 1968) - decommissioned on 18 October 1989
Karanj S21 (04 September 1969) - decommissioned on 01 August 2003
Kursura S20 (18 December 1969) - decommissioned on 27 September 2001
Vagir S41 (03 November 1973) - decommissioned on 07 June 2001
Vagsheer S43 (26 December 1974) - decommissioned on 30 April 1997
Displacement: Submerged; 1950 tons.
....................Dived; 2475 tons.
Dimensions: Length - 91.3 metres.
................Beam - 7.5 metres.
................Draught - 6 metres.
Diving Depth: 250 meters (820 feet), reducing with age.
Main Machinery: Has three Type 37-D diesel electric generator sets with 6000 hp. Also has 3 motors which give 5400 hp. Has 3 shafts and 1 auxiliary motor with 140 hp.
Maximum Speed: Surfaced; 16 knots.
.......................Dived; 15 knots.
Maximum Range: 20,000 miles at 8 knots surfaced
.......................380 miles at 10 knots dived.
Complement: 75 (incl. 8 Officers).
Radar: Surface; One MRP-25 (NATO: Snoop Tray) radar at I-band frequency.
Sonar: One Hercules bow mounted sonar, passive search & attack with medium frequency.
..........One Fenik sonar, passive search & attack.
Weapons: Ten 533mm torpedo tubes (6 forward, 4 aft), with 22 SET-65E/SAET-60 active or passive homing torpedoes to 8.1n miles; 15 km at 40 knots. Carries 44 mines, in lieu of torpedoes.
Countermeasures: ESM; Stop Light - radar warning.
Comments: INS Vela is part of the 8th Submarine Squadron based at Vizag, while the INS Vagli is based at Mumbai. The Karanj served as trials platform for the ATV command systems including the 'Rani' and 'Pachendriya' radar/sonar equipment. With her decommissioning on 01 August 2003, it is unsure which of the two remaining Foxtrot Class boats - if ever - will take over as the trials platform for the ATV's systems. INS Vela is undergoing a refit, which might not be completed. The Kalvari and Kursura have been converted into submarine museums, based at Vizag