INS Sahyadri (F49)
INS Sahyadri moored in Sydney Harbour in October 2013
|Career (India)||Indian Navy|
|Builder:||Mazagon Dock Limited|
|Laid down:||17 March 2003|
|Launched:||27 May 2005|
|Commissioned:||21 July 2012|
|Status:||in active service, as of 2014[update]|
|Class & type:||Shivalik class guided missile frigate|
|Displacement:||6,200 tonnes (6,100 long tons; 6,800 short tons) full load|
|Length:||142.5 m (468 ft)|
|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)
22 knots (41 km/h; 25 mph) (diesel engines)
|Complement:||257 (including 35 officers)|
|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
1 × BEL APARNA
HUMSA (hull-mounted sonar array)
ATAS/Thales Sintra towed array systems
|BEL Ajanta electronic warfare suite|
8 × VLS launched BrahMos, anti-ship and land-attack cruise missiles
|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.
Design and description
The Indian Navy conceived Project 17 for design of stealthy frigates to be designed and built in India. 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". The first three units were formally ordered by the Indian Navy in early 1999.
General characteristics and propulsion
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).
Electronics and sensors
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
- 1 ×BEL APARNA
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.
Construction and service
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.
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. 
- "Shivalik class". Indiannavy.nic.in. Retrieved 2013-05-01.
- Cdr. A.K. Lambhate, "Stealth is Wealth", Sainik Samachar, Vol. 51, No. 14, 16–31 July 2004, Ministry of Defence (India).
- Monica Chadha, India trials stealth frigate, BBC, 18 April 2003
- 2003-04 Annual Report of the Ministry of Defence, India.
- MoD - Report on Major Activities, 2002-05 (doc), Ministry of Defence (India).
- "Project 17 (Shivalik) Class". Surface Fleet, Active Ships, Project 17 (Shivalik) Class. Bharat-rakshak.com. Retrieved 29 February 2012.
- "Indian stealth frigate sets sail for Australia."
- "RIMPAC 2014 Participating Forces". http://www.cpf.navy.mil. Retrieved 28 June 2014.
Media related to INS Sahyadri (ship, 2005) at Wikimedia Commons