INS SHIVALIK ( STEALTH WARSHIP )

INS SHIVALIK

INS  SHIVALIK :-

Shivalik Class frigates are multirole stealth craft built for Indian Navy. They are the first Indian warships to be built with stealth features and will be the lead frigates of the country's navy during the first quarter of the 21st century.The lead ship of this class  is named 'Shivalik', after the lowest of the Himalayan ranges, which extends to 2,500km. The frigates to follow were also named after other mountain ranges – 'Satpura' and 'Sahyadri'. They are being produced as an upgrade to the Talwar Class frigates, which will be succeeded by the Project 17-A Class frigates.

Shivalik Class frigates are 143m long and 16.9m wide. They have a displacement of 4,900t and run on gas and diesel turbines. These frigates include unique stealth features and land-attacking capabilities. Shivalik Class frigates can carry a crew of 257, including 37 officers.The structural, thermal, and acoustic stealth features make them less detectable to the enemy. The radar systems and engines are further modified to reduce and avoid detection and noise levels. Fitted with Klub anti-ship and BrahMos supersonic cruise missiles providing strong attacking capabilities. The fire control systems used on these frigates are developed by DRDO and built by Bharat Electronics Limited (BEL).

The vessels were built in 172 modules through modular construction. Construction of the first frigate began in December 2000. In July 2001, the keel of this frigate was laid, and it was launched and named Shivalik in April 2003. In February 2009, the frigate underwent sea trials before being commissioned into the Indian Navy in April 2010.The keel of the second frigate, Satpura, was laid in October 2002 and launched in June 2004. It was commissioned in August 2011. The keel of the third frigate in the class, Sahyadri, was laid in 2003 and launched in May 2005. It was commissioned in July 2012.All three frigates received the initials 'INS' (Indian Naval Ship) when commissioned with the Indian Navy.

The proposed P-17A acquisition has had different figures floated. Early figures mentioned Rs 30,000 crore (300 billion Indian rupees, then about $6.7 billion), with expected costs of Rs 4,000 crore (then about $892 million) per ship. March 2009 reports give figures of Rs 17,000 crore, or about $3.3 billion at that time. By June 2009, however, reports of DAC approval mentioned Rs 45,000 crore, or about $9.23 billion total and $1.3 billion per ship. As a basis of comparison, India’s July 2006 order for 3 more Talwar Class frigates amounted to Rs 5,114 crore, or between $400-550 million per ship.

The 2nd area of uncertainty involves ship design. By soliciting tenders from so many foreign firms, and insisting on improved stealth requirements, India is implicitly creating the option of having Project 17-A ships use a very different base design than the Project 17 Shivalik class frigates. That question will not be resolved until a foreign shipbuilding partner is chosen and ratified, and possibly not even then.

The 3rd area of uncertainty revolves around the program’s industrial arrangements, though current reports indicate that a resolution is close. Typical Indian contracts involve some number of ships built by the manufacturer, and others built at Indian shipyards like Mazagon Docks Ltd external link (MDL) in Mumbai, or Garden Reach Shipyard Engineers external link (GRSE) in Kolkata. On the other hand, in 2006 Navy Chief Admiral Sureesh Mehta specifically referred to force modernization problems stemming from both constraints on defense budgets, and Indian shipyards’ record of slow delivery. He added that:

“It is not necessary that we will take this route [of using MDL or Garden Reach], adding that the other Indian shipyards may step up warship production to meet the projected force levels.”

That multi-shipyard option would disappear, and new complications would be introduced, if these ships use modular construction. That approach would involve a series of 300-tonne ship “blocks” that are fully equipped, and must fit together so precisely that pipes, wiring, and other components all align exactly when they’re joined. MDL and GRSE are the only shipyards with the depth of experience to pull that off – but neither has ever used modular construction.Which leads to India’s final option: build some of these ships at foreign shipyards, as the government is doing with its July 2006 “Improved Krivak class” frigate order. The Navy would prefer to have MDL and/or GRSE workers learn by working at a foreign shipyard with experience in modular construction, then bring those important skills back to India to build additional ships. The alternative would involve trying to learn a completely new shipbuilding method, while trying to build important Navy ships, and having the Navy foot the bill for any mistakes.Based on past history, and the experience of other countries, India’s Director of Naval Design Rear Adm. Badhwar is clever to be cautious. Mistakes using the new modular method would be extremely expensive to fix. The level of rework required could easily turn the Indian shipyards’ purported 100% cost advantage into a deficit, while creating project delays that would extend for months – and might even be measured in years.Despite these risks, it appears that India’s government intends to move forward with a dual-build strategy at MDL at GRSE, using modular construction, without any work or co-build efforts performed in foreign shipyards. 

COUNTERMEASURES AND SENSORS :-

These frigates are mounted with MR-760 Fregat M2EM 3-D radar, an air search radar, HUMSA (hull-mounted sonar array) and ATAS / Thales Sintra towed array systems, BEL Aparna fire control radar and BEL Ajanta weapons control radar to counter attack the enemy.

WEAPONS AND PROPULSION SYSTEM :-

Shivalik is fitted with a mix of indigenous Russian, Indian, and Western weaponry and sensor systems. The weaponry systems include the Russian Shtil surface-to-air missile systems, Klub anti-ship cruise missiles, and Israeli Barak-I missile defence system.The Satpura frigate has weaponry worth INR1bn including vertical-launch missiles, surface-to-air missiles, and anti-submarine systems."Shivalik is fitted with a mix of indigenous Russian, Indian, and Western weaponry and sensor systems."Shivalik Class frigates are driven by combined diesel and gas (CODOG) propulsion system. Two Pielstick 16 PA6 STC diesel engines deliver 7,600shp at 1,084rpm each and two GE LM2500 gas turbine engines deliver33, 600shp at 3,600rpm.

CARRYING HELICOPTERS :-

The frigates can carry two advanced helicopters. The Shivalik carries two HAL Dhruv or two Sea King mk42B and the Satpura carries two K-31 Kamov helicopters.