INS Sindhughosh (S55)

History
Name:	INS Sindhughosh
Namesake:	"Sea - Battle Cry"
Commissioned:	30 April 1986 - CO Cdr.K.C Varghese, XO Lt.Cdr.K.Ramdas
Fate:	Active service as of 2008
Status:	in active service, as of 2024
Badge:	INS Sidhugosh 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 Sindhughosh (S55) is the lead ship of her class of diesel-electric submarines of the Indian Navy.

The submarine was commissioned in April 1986 in Riga, Latvia. This submarine is diesel-powered and has a total of six motors. INS Sindhughosh was the first submarine in Indian Navy to be equipped with the Klub ZM-54E SS-N-27 antiship cruise missiles with a range of 220 km. The submarine has a displacement of nearly 3,100 tons when dived, a maximum diving depth of 300 meters, speed of up to 17 knots (31 km/h), and are able to operate solo for 45 days with a crew of 52.

Service history

Collision with a foreign vessel (2008)

INS Sindhughosh collided with a foreign merchant vessel - MV Leeds Castle - while trying to surface in the seas north of Mumbai on 7 January 2008. The submarine was taking part in fleet level war games, when the accident occurred. The boat has reportedly suffered slight damage to the conning tower area. Naval officials said the submarine was submerged and had its radars off and periscope down when it slammed into the merchant vessel off India's Diu island, 400 nautical miles (740 km) from Mumbai. The boat was apparently maintaining total radio and radar silence to escape detection, when the accident took place. It has also been reported that the indigenously developed USHUS sonar malfunctioned and played a direct role in the accident. A Navy officer, on condition of anonymity, stated that the MV Leeds Castle was in restricted waters and in that area the ocean depth is not great and thus the reason for the mishap. Other naval officials expressed surprise that how in the high seas, the submarine was cruising at only at a depth of 10 to 20 feet (6.1 m). The submarine has since been towed to a naval dockyard at Mumbai and a Board of Inquiry has been ordered to probe the mishap. The crew of INS Sindhughosh had a miraculous escape as the accident was caused at surface level. The reports of structural damage is a cause of concern. Normally the submarine has two hulls. But any damage to structure means checking the entire review of the whole structure. Even if one steel bar has a weakness, the submarine will face adverse conditions at 250 meters below sea level.

Fire damage (2013)

On 14 August 2013, Sindhughosh sustained minor damage in a fire which caused explosions and the sinking of INS Sindhurakshak, while at dock in Mumbai. The navy did not release any details of the extent of damage on Sindhughosh.

Runs aground (2014)

On 17 January 2014, INS Sindhughosh run aground due to the low tide, while returning into Naval Dockyard, Mumbai.

External links

• INS Sindhughosh and her collision at Bharat-Rakshak