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INS Sahyadri (F49)

Guided Missile Frigate Warship

India | 2012

"INS Sahyadri F49 became the third ship of the three-strong Shvalik-class of guided missile frigates serving the modern Indian Navy."

Authored By: Staff Writer | Last Edited: 12/12/2017 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

The Shivalik-class is a group of advanced, stealth-minded guided-missile frigate warships serving the Indian Navy and encompass INS Shivalik (F47), INS Satpura (F48) and INS Sahyadri (F49). All three planned vessels are in active service as of this writing (2017). Construction of the class was had from 2000 into 2010 and all were commissioned in 2012. These vessels serve as the primary frigate model currently available to the Indian Navy, alongside the Taiwar, Brahmaputra and Godavari classes.

INS Sahyadri (F49) was built by Mazagon Dock Limited and saw her keel laid down on September 30th, 2003. She was launched to sea on May 27th, 2005 and undertook sea trials during 2011-2012. She was formally commissioned into service on July 21st, 2012 and makes her homeport out of Visakhapatnam.

As built, Sahyadri displaces 6,800 tons under full load and showcases a length of 468 feet with a beam of 55 feet and a draught down to 15 feet. Power is from 2 x Pielstick 16PA6STC marine diesels outputting 15,200 horsepower and 2 x General Electric LM2500+ gas turbines adding another 33,600 horsepower. These are arranged in CODOG (COmbined Diesel Or Gas) and operate as an efficiency measure where/when dashing is preferable to cruising and vice versa. Speed in optimal conditions can reach 32 knots and range is out to 5,000 nautical miles.

Sahyadri is equipped with modern sensors and processing equipment led by the MR-760 Fregat M2EM 3-D radar system. She carries 4 x MR-90 "Orekh" radar units as well as 1 x ELTA EL/M-2238 STAR and 2 x ELTA EL/M-2221 STGR units. (Israeli-made). Like other modern warships, the vessel is also outfitted with an in-hull sonar array as well as a towed sonar array for submarine hunting. Electronic Warfare (EW) is handled through the BEL Ajanta EW suite.

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Armament consists of a mix of conventional projectile and missile-based weaponry. This includes 1 x 76mm OTO-Melara (Italy) turreted deck gun over the forecastle as well as 2 x AK-630 (Russian) Close-In Weapon Systems (CIWSs). At the heart of her attack scheme, however, is a 32-cell Vertical Launching System (VLS) housing Barak 1 (Israel) Surface-to-Air Missiles (SAMs) and a 24-cell battery containing "Shtil-1" (Russian) SAMs. The warship can also carry 8 x anti-ship or land-attack missiles / cruise missiles to assail surface warships and inshore land-based targets as needed. For Anti-Submarine Warfare (ASW) there are 2 x DTA-53-956 series torpedo launchers and 2 x RBU-6000 (RPK-8) Anti-Submarine ROCket (ASROC) launchers fitted.

This warship class exhibits all the telltale signs of "stealthification" as protrusions are kept to a minimum wherever possible. The superstructure sides are slab-sided and contoured well into the sleek lines of the hull proper. The bridge area is set in its usual place, overlooking the forecastle and offering commanding views of the field ahead, but seamlessly integrated into the existing lines of the superstructure itself. The mast is of an enclosed pyramidal shape mounting the various communications and sensor fits and the smoke funnels, located amidships, are of a stealthy low profile design and completely enclosed themselves - helping to reduce the signature of this powerful craft. A secondary, shorter, mast is featured over the aft superstructure and this section also houses a full-service helicopter hanger. At the extreme aft-end of the ship is a launch pad for operating up to 2 x HAL Dhruv or Sikorsky Sea King class helicopters. The crew complement numbers some 257 personnel.

Commissioned in 2012, INS Sahyadri has been a part of the 2013 International Fleet Review in Sydney, Australia, participated in RIMPAC 2014, traversed the South China Sea in 2015 and made several high-profile stops in the Philippines, Japan, South Korea and Russia throughout 2016.

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Power & Performance
Those special qualities that separate one sea-going vessel design from another. Performance specifications presented assume optimal operating conditions for INS Sahyadri (F49).
2 x Pielstick 16 PA6 STC diesel engines developing 15,200 horsepower with 2 x GE LM2500+ engines developing 33,600 horsepower driving 2 x Shafts in COmbined Diesel Or Gas (CODOG) arrangement.
32.0 kts
36.8 mph
Surface Speed
The bow-to-stern, port-to-starboard physical qualities of INS Sahyadri (F49).
468.0 ft
142.65 meters
O/A Length
55.0 ft
16.76 meters
15.0 ft
4.57 meters
Available supported armament and special-mission equipment featured in the design of INS Sahyadri (F49).
1 x 32-cell Vertical Launching System (VLS) (Barak-1 missiles).
1 x 24-cell VLS (Shtil-1 medium-range air-to-air missiles)
8 x VLS (Klub cruise missiles / BahMos anti-ship missiles)
1 x 3" Otobreda turreted deck gun
2 x AK-630 Close-In Weapon Systems (CIWSs)
2 x RBU-6000 (RPK-8) Anti-Submarine ROCket launchers (ASROC).
Air Arm
Available supported fixed-wing / rotary-wing aircraft featured in the design of INS Sahyadri (F49).
2 x Sikorsky Sea King Mk.42B OR HAL Dhruv naval helicopters.
Ships-in-Class (3)
Notable series variants as part of the INS Sahyadri (F49) family line as relating to the Shivalik-class group.
INS Shivalik (F47); INS Satpura (F48); INS Sahyadri (F49)
Global operator(s) of the INS Sahyadri (F49). Nations are displayed by flag, each linked to their respective national naval warfare listing.
National flag of India

[ India ]
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Image of the INS Sahyadri (F49)
Image from the United States Department of Defense DVIDS network.
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Image of the INS Sahyadri (F49)
Image from the United States Department of Defense DVIDS network.

Going Further...
INS Sahyadri (F49) Guided Missile Frigate Warship appears in the following collections:
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