INS Sahyadri (F49)

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RAN-IFR 2013 D3 158.JPG
INS Sahyadri moored in Sydney Harbour in October 2013
Career (India)  Indian Navy
Name: INS Sahyadri
Namesake: Sahyadri hills
Builder: Mazagon Dock Limited
Laid down: 17 March 2003
Launched: 27 May 2005
Commissioned: 21 July 2012
Status: in active service, as of 2015
Badge: INS Sahyadri seal
General characteristics
Class and type: Shivalik class guided missile frigate
Displacement: 6,200 tonnes (6,100 long tons; 6,800 short tons) full load[1]
Length: 142.5 m (468 ft)[2]
Beam: 16.9 m (55 ft)
Draught: 4.5 m (15 ft)
Installed power: 2 × Pielstick 16 PA6 STC Diesel engines
15,200 shp (11,300 kW)
2 × GE LM2500+
33,600 shp (25,100 kW)
Propulsion: boost turbines in CODOG configuration.
Speed: 32 knots (59 km/h; 37 mph)[3]
22 knots (41 km/h; 25 mph) (diesel engines)
Complement: 257 (including 35 officers)
Sensors and
processing systems:
1 × MR-760 Fregat M2EM 3-D radar
4 × MR-90 Orekh radar
1 × Elta EL/M-2238 STAR
2 × Elta EL/M-2221 STGR
HUMSA (hull-mounted sonar array)
ATAS/Thales Sintra towed array systems
Electronic warfare
and decoys:
BEL Ajanta electronic warfare suite
Armament: Anti-air missiles:

32-cell VLS launched Barak 1 missiles
24× Shtil-1 medium range missiles

Anti-ship/Land-attack missiles:
8 × VLS launched Klub, anti-ship cruise missiles

8 × VLS launched BrahMos, anti-ship and land-attack cruise missiles

1 × 3.0-inch Otobreda, naval gun
2 × AK-630 CIWS

Anti-submarine warfare:
2 × 2 DTA-53-956 torpedo launchers

2 × RBU-6000 (RPK-8) rocket launchers
Aircraft carried: 2 × HAL Dhruv or Sea King Mk. 42B helicopters.

INS Sahyadri (F49) is a Shivalik class stealth multi-role frigate built for the Indian Navy. She was built at the Mazagon Dock Limited (MDL) located in Mumbai. Construction of the vessel began in 2003 and was completed by 2011. She underwent sea trials from thereon before being commissioned on 21 July 2012 into the Eastern Naval Command headquartered at Vishakapatnam.[4]

INS Sahyadri features improved stealth and land attack capabilities over the preceding Talwar-class frigates.[4]

Design and description[edit]

Sahyadri under construction

The Indian Navy conceived Project 17 for design of stealthy frigates to be designed and built in India.[5][6] The Directorate of Naval Design (DND)'s design of the Shivalik class called for a "5000 ton stealth frigates (Project 17) incorporating advanced signature suppression and signature management features".[7] The first three units were formally ordered by the Indian Navy in early 1999.[8]

General characteristics and propulsion[edit]

INS Sahyadri has a length of 142.5 m (468 ft) overall, a beam of 16.9 m (55 ft) and a draft of 4.5 m (15 ft). The ships displaces about 4,900 tonnes (4,800 long tons; 5,400 short tons) at normal load and 6,200 tonnes (6,100 long tons; 6,800 short tons) at full load. The complement is about 257, including 35 officers.

The ship uses 2 Pielstick 16 PA6 STC Diesel engines and 2 GE LM2500+ boost turbines in CODOG configuration providing a total of 47,370 shp (35,320 kW) of power. This allows the ship to reach a maximum speed of 32 knots (59 km/h; 37 mph).[4]

Electronics and sensors[edit]

INS Sahyadri is equipped with a wide range of electronics and sensors. These include

  • 1 × MR-760 Fregat M2EM 3-D radar
  • 4 × MR-90 Orekh radars
  • 1 × Elta EL/M-2238 STAR
  • 2 × Elta EL/M-2221 STGR

In addition, it uses HUMSA (hull-mounted sonar array), ATAS/Thales Sintra towed array systems and the BEL Ajanta Electronic Warfare suite.[4]


INS Sahyadri is equipped with a mix of Russian, Indian and Western weapon systems. These include the 3.0-inch Otobreda naval gun, Klub and BrahMos supersonic anti-ship missiles, Shtil-1 anti-aircraft missiles, RBU-6000 anti-submarine rocket launchers and DTA-53-956 torpedo launchers. A 32 cell VLS launched Barak SAM and AK-630 act as Close-in weapon systems(CIWS). The ship also carries two HAL Dhruv or Sea King Mk. 42B helicopters.[4]

Construction and service[edit]

The keel of INS Sahyadri was laid in September 2003. She was formally launched in May 2005 and commissioned in July 2012 after undergoing sea-trials in 2011.[4]

In October 2013, Sahyadri participated in the International Fleet Review 2013 in Sydney, Australia, as part of a growing defense cooperation between the two countries.[9]

She made her second visit to Australia in June 2014 with a port call at Darwin on a three-day goodwill visit. At a party with the Australian Navy, Darwin's Indian Diaspora, the Indian High Commissioner to Australia and senior leaders were the guests. She sailed onward to Hawaii to participate in the naval Exercise RIMPAC 2014 with the US Navy and 20 other navies.[10]


  1. ^ "Shivalik class". Retrieved 2013-05-01. 
  2. ^ Cdr. A.K. Lambhate, "Stealth is Wealth", Sainik Samachar, Vol. 51, No. 14, 16–31 July 2004, Ministry of Defence (India).
  3. ^ Monica Chadha, India trials stealth frigate, BBC, 18 April 2003
  4. ^ a b c d e f "Shivalik Class Frigates". Naval Technology. 2011-06-15. Retrieved 2013-05-05. 
  5. ^ 2003-04 Annual Report of the Ministry of Defence, India.
  6. ^ MoD - Report on Major Activities, 2002-05 (doc), Ministry of Defence (India).
  7. ^ The Corps of Naval Constructors - Building Self Reliance, MoD Samachar, Ministry of Defence (India), 1 December 2006.
  8. ^ "Project 17 (Shivalik) Class". Surface Fleet, Active Ships, Project 17 (Shivalik) Class. Retrieved 29 February 2012. 
  9. ^ "Indian stealth frigate sets sail for Australia."
  10. ^ "RIMPAC 2014 Participating Forces". Retrieved 28 June 2014. 

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