INS Sindhuraj (S57)

History
Name:	INS Sindhuraj
Commissioned:	20 October, 1987
Status:	in active service, as of 2025
Badge:	INS Sindhuraj Crest
General characteristics
Class & type:	Sindhughosh class submarine
Displacement:	2325 tons surfaced 3076 tons dived
Length:	72.6 m (238 ft)
Beam:	9.9 m (32 ft)
Draught:	6.6 m (22 ft)
Propulsion:	2 × 3650 hp diesel-electric motors 1 × 5900 hp motor 2 × 204 hp auxiliary motors 1 × 130 hp economic speed motor
Speed:	Surfaced;10 knots (19 km/h) Snorkel Mode;9 knots (17 km/h) Submerged;17 knots (31 km/h)
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)
Endurance:	Up to 45 days with a crew of 52
Test depth:	Operational Depth;240 m (790 ft) Maximum Depth;300 m (980 ft)
Complement:	52 (incl. 13 Officers)
Armament:	9M36 Strela-3 (SA-N-8) SAM launcher Klub-S (3M-54E) ASCM Type 53-65 passive wake homing torpedo TEST 71/76 anti-submarine, active-passive homing torpedo 24 DM-1 mines in lieu of torpedo tube

INS Sindhuraj (S57) is a Sindhughosh-class diesel-electric submarine of the Indian Navy.