Kamorta Class ASW Corvettes

Bleh

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Ya'll Nibbiars Ya @Bleh Nibba tell me why are you posting this here when there is a thread already for it?
Which one?.. Also it felt like Kamorta-Class' successors need mention.
 

Haldilal

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Which one?.. Also it felt like Kamorta-Class' successors need mention.
Here Nibba and I dont think its Kamorta Class Corvette successor more like Abhay Class Corvette Replacment/Successor.
 

avknight1408

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Apologies for posting this guy's article. But it has some pretty good info.

https://ajaishukla.blogspot.com/2020/10/navys-new-corvette-ins-kavaratti-shows.html?m=1

Navy’s new corvette, INS Kavaratti, shows why time and cost overruns are endemic to warship projects

By Ajai Shukla
Business Standard, 22nd Oct 20


When Chief of Army Staff, General Manoj Mukund Naravane, commissions Indian Naval Ship (INS) Kavaratti in Visakhapatnam on Thusday, it will mark the end of Project 28 – one of the Indian Navy’s most ambitious, most delayed and most budget-busting warship projects.

Project 28, which envisioned building four indigenous anti-submarine corvettes at Garden Reach Shipbuilders and Engineers, Kolkata (GRSE), will end four years later than planned. The Ministry of Defence (MoD) approved it in 2003 and the first corvette was to be delivered in 2012, with the other three following at one-year intervals.

Project 28 has also overshot its budget by more than 250 per cent. The project’s sanctioned cost was Rs 2,700 crore, but will end up costing over Rs 7,000 crore.

Project 28 illustrates why time and cost overruns are endemic to most Indian warship building projects. A central reason is the navy’s operational assessment that it is better to get a warship late and over-budget than to get one that is technologically overmatched by potential adversaries.

Project 28 also suffered significant delays because the navy insisted on indigenizing each corvette to the maximum extent possible. GRSE told Business Standard that INS Kavaratti will have achieved an unprecedented indigenization level of 90 per cent.

Delay began even before construction did, with the navy deciding that Project 28 corvettes would be the first Indian warships to be constructed from indigenous warship-grade steel. The Steel Authority of India’s Bhilai steel plant eventually developed the so-called DMR249A steel. But that involved a two-year delay.

Then, after INS Kamorta and INS Kadmatt – the first two corvettes – joined the fleet in 2014 and 2016 respectively, the navy ambitiously decided to build the remaining two corvettes’ superstructures with composite materials to make them lighter and, therefore, faster. In addition, warships built from composites reflect radar far less than steel, making them harder to detect.


This meant going to Kockums of Sweden for materials and to learn construction with composites, causing another year of delay.

On the positive side, this resulted in the weight of the third and fourth corvettes – INS Kiltan and Kavaratti – being reduced from 3,150 tonnes to just 3,000 tonnes. These corvettes now cleave through the seas at a pacy 46 kilometres per hour (kmph) and have a patrol endurance of 6,400 km at a speed of 33 kmph.

Further delay was caused because of the determination to indigenize as many systems and sub-systems as possible. Vendors had to be developed even in the complex areas of sensors and weapons, where import content is usually high.

GRSE says INS Kavaratti will field a 76 millimetre Otomelara gun built by Bharat Heavy Electricals Ltd, while Larsen & Toubro has built its heavyweight torpedo tubes and rocket launchers. Ordnance Factory, Ambarnath manufactures the Kavach chaff launchers that serve as decoys for incoming missiles. Bharat Electronics Ltd has built most of the sensors and combat management systems in INS Kavaratti.

Kirloskar Oil Engines Ltd (KOEL) has built the four diesel engines that power the Project 28 corvettes, while Cummins and Kirloskar Electric have engineered the 3 megawatt generators that supply electricity on-board.

Remarkably, the expertise that GRSE and its sub-vendors have accumulated in designing and manufacturing a world-class anti-submarine corvette will now wither, since there are no more orders for such warships. Instead, the navy is evolving a design for the so-called “Next Generation Corvette”.

Major navies evolve a successful warship design and then achieve economy of scale by building them in large numbers, with only incremental changes to the basic design. The US Navy has built 82 destroyers of the successful Arleigh Burke-class and China is following the same approach with its latest Type 055 Renhai-class destroyers.
 

Bleh

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On the positive side, this resulted in the weight of the third and fourth corvettes – INS Kiltan and Kavaratti – being reduced from 3,150 tonnes to just 3,000 tonnes. These corvettes now cleave through the seas at a pacy 46 kilometres per hour (kmph) and have a patrol endurance of 6,400 km at a speed of 33 kmph.

Further delay was caused because of the determination to indigenize as many systems and sub-systems as possible. Vendors had to be developed even in the complex areas of sensors and weapons, where import content is usually high.
Noice.

Our approach is different fro industrial powerhouses... We incrementally beef up each batch of 5-7, by both capability & indigenous content. Nothing will "wither away" as long as we don't stop.

Everybody has their hands full by their present capacity.
 

Rajaraja Chola

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View attachment 64099
Export version(Anti Ship) of Kamorta class. Was offered in both Brazilian and Philippine frigate programs, but was rejected.
@Bleh
No idea what happened in Brazil. But in Phillipines it was high tonnage for an corvette a small weapon load plus Hyundai corruption. They bribed Filipino officials.
 

Haldilal

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No comment section, no CC, what are we supposed to understand from this?
Just that they are realy concerned about the Kamorta class Corvettea capabilities. And its really a excellent ASW corvette.
 

Abhay Rajput 02

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Just that they are realy concerned about the Kamorta class Corvettea capabilities. And its really a excellent ASW corvette.
However its quite big. It shouldn't be that much big. This ship is very lightly armed. Hunting submarines could easily be done by smaller ships. There was no need to build big ship. Smaller ships would've been more silent.
 

Haldilal

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However its quite big. It shouldn't be that much big. This ship is very lightly armed. Hunting submarines could easily be done by smaller ships. There was no need to build big ship. Smaller ships would've been more silent.
Ya needs VLS then it armed to teeth but the doctrine of purpose ship is still stucked by the navy. Unlike like the Russian navy arming Corvettes to teeth.
 

Abhay Rajput 02

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Ya needs VLS then it armed to teeth but the doctrine of purpose ship is still stucked by the navy. Unlike like the Russian navy arming Corvettes to teeth.
Yes . A ship like 3500 tonnes is only armed with torpedoes is a disgrace. They could have made a 1500-2000 tonnes corvettes for asw. It would still have quite a long range. The worst part is that this ship would have quite old torpedoes with limited range.
 

Aniruddha Mulay

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Yes . A ship like 3500 tonnes is only armed with torpedoes is a disgrace. They could have made a 1500-2000 tonnes corvettes for asw. It would still have quite a long range. The worst part is that this ship would have quite old torpedoes with limited range.
It uses Varunastra HWT, SAM package will be added once the Navy makes up it's mind with what SRSAM it wants.
 

Aniruddha Mulay

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Well yeah almost forget about it. But still too big a ship for just ASW.
That's true, although this design can be easily modified to build a guided missile corvette.
GRSE even showcased a guided missile corvette design based on Kamorta's design for export.
Indian Navy should seriously consider it, 8 ASHM and 16-24 VLS SAM is a lethal package for a corvette.
 

Haldilal

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That's true, although this design can be easily modified to build a guided missile corvette.
GRSE even showcased a guided missile corvette design based on Kamorta's design for export.
Indian Navy should seriously consider it, 8 ASHM and 16-24 VLS SAM is a lethal package for a corvette.
They can use the design with some upgrades for a 5,000 tonnes standard frigate. We can have a dozens of this ships.
 

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