Kamorta Class ASW Corvettes

[shiphone]

continued...

 

[shiphone]

it took some time for the uploading....the last part...
again, thanks to our great member -- ID: eos5

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[Illusive]

Can't believe the closest we ever got to see P28 was in China, thanks @shiphone for the pics.

To any member: Can ships be made of carbon fiber, like cars or any other composites, lets say a smaller ship like a fast attack craft.

 

[shiphone]

errrr...........

on Aug 31st 2012...the Indonesia KRI Klewang stealth missile boat(triple-hulled vessel) launched..., it was designed by Swedish PT Lindun .(North Sea Boats)
composite material mainly...

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Just in less than one month(on 29th Sep), it turned to be :

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the fire control is really a big problem for the carbon fiber/ composite material

 

[indiandefencefan]

was it ever determined what caused the fire.....even though fire control is a big problem for composite materials , fires dont usually break out normally on naval ships ruling out sabotage.

 

[Illusive]

@shiphone

wiki says..

Carbon fiber is most notably used to reinforce composite materials, particularly the class of materials known as carbon fiber or graphite reinforced polymers. Non-polymer materials can also be used as the matrix for carbon fibers. Due to the formation of metal carbides and corrosion considerations, carbon has seen limited success in metal matrix composite applications. Reinforced carbon-carbon (RCC) consists of carbon fiber-reinforced graphite, and is used structurally in high-temperature applications. The fiber also finds use in filtration of high-temperature gases, as an electrode with high surface area and impeccable corrosion resistance, and as an anti-static component. Molding a thin layer of carbon fibers significantly improves fire resistance of polymers or thermoset composites because a dense, compact layer of carbon fibers efficiently reflects heat.[8]

The increasing use of carbon fiber composites is displacing aluminum from aerospace applications in favor of other metals because of galvanic corrosion issues.

 

[niku456]

That is no excuse my friend.You should look at an warship as a piece of real estate and in this case I do feel that we have wasted a lot of space in this corvettes by not including at least an 8 cell VLS module for AShMs and a farter 16 VLS for SAMs.

right mate, atleast 8 ashms are needed to counter surface threats.

 

[Bheeshma]

These are ASW ships. IN already has a tender for 6 corvettes which could use the same hull and just replace the RBU-6000's with 8 Brahmos-M's.

 

[nandu]

http://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&ved=0CD4QqQIwBQ&url=http%3A%2F%2Feconomictimes.indiatimes.com%2Fnews%2Fdefence%2Fnavy-experimenting-with-composite-superstructure-for-warships%2Farticleshow%2F47056945.cms&ei=8EtAVd-OL4miugT-vYCQCw&usg=AFQjCNHacOwDJZ8VDyiBJqVGYHFAVyrWFQ&bvm=bv.91665533,d.c2E

 

[cobra commando]

KOLKATA: Kavaratti, the last of the four anti -submarine warfare class stealth corvettes being built for India under Project 28, will be launched here next week. Designed by the Directorate of Naval Design and built by Garden Reach Ship Builders and Engineers, the contract for the construction of four P28 ships was signed in June, 2012, with the project priced at Rs 7,800 crore. The corvette, with a displacement of 3,300 tonnes, has a lenght of 109.1 metres and measures 13.7- m at beam. The ship is propelled by four diesel engines to achieve speeds in excess of 25 knots and has an endurance of more than 3,400 nautical miles. Defence sources said that about 90 per cent of Kavaratti is indigenous and the ship is "well equipped" to fight in nuclear, chemical and biological warfare conditions. INS Kamorta, the first ship under this project, was commissioned by the Navy last year. Kadmatt and Kiltan are scheduled for delivery between 2015-2017. Launching of a ship means transferring the vessel to water.


Anti-sub vessel INS Kavaratti set for launch next week

 

[Kunal Biswas]

Kavaratti, the last of the four anti -submarine warfare class stealth corvettes being built for India under Project 28, will be launched here next week. Designed by the Directorate of Naval Design and built by Garden Reach Ship Builders and Engineers, the contract for the construction of four P28 ships was signed in June, 2012, with the project priced at Rs 7,800 crore. The corvette, with a displacement of 3,300 tonnes, has a lenght of 109.1 metres and measures 13.7- m at beam. The ship is propelled by four diesel engines to achieve speeds in excess of 25 knots and has an endurance of more than 3,400 nautical miles. Defence sources said that about 90 per cent of Kavaratti is indigenous and the ship is "well equipped" to fight in nuclear, chemical and biological warfare conditions. INS Kamorta, the first ship under this project, was commissioned by the Navy last year. Kadmatt and Kiltan are scheduled for delivery between 2015-2017. Launching of a ship means transferring the vessel to water.

 

[akshay m]

INS Kavratti
pics before launch


thank god that they are launching with the superstructure, integrated unlike the Vishakapatanam

 

[cobra commando]

Fourth ASW Corvette (Kavaratti) launched:

 

[sob]

Good we are seeing some serious numbers being added to the naval fleet.

 

[Bheeshma]

Need to order 8 more follow on P-28A soon. Hopefully GSL and private yards can contribute. GRSE will be building P-17a's.

 

[Dharmateja]

Honest question, why do the suface of the ships look like they are wrapped by the oil dabba sheets of metal? Are they using low quality material to save weight?

 

[cobra commando]

^The Kamorta Class features high tensile indigenous steel hull incorporating a superstructure made of indigenous DMR 249A steel and Carbon Fibre Reinforced Plastic (CFRP) materials. The hull and superstructure are designed to achieve low radar cross section. The stealthier hull form is designed to deliver excellent sea keeping and manoeuvrability characteristics while also ensuring lower noise and vibration levels. The new technology with extremely low radar cross-section has been pioneered by Swedish Navy which uses Visby-class corvettes, made entirely of composites.

 

[Kunal Biswas]

It same with all modern ship hull designs ..

Honest question, why do the suface of the ships look like they are wrapped by the oil dabba sheets of metal? Are they using low quality material to save weight?

 

[cobra commando]

Navy to get Sonar systems for anti-sub warfare from Germany

New Delhi: India will get six low frequency Active Towed Array Sonar (ACTAS) systems, that will be fitted on the Kamorta-class anti-submarine corvettes, later in 2015 from Germany. The system, which can detect enemy submarines, will give a fillip to India's anti-submarine warfare capabilities. India had in late 2014 signed a contract for the towed array sonar with German firm Atlas Elektronik. Under the deal, the first six systems would come from Germany and the rest will be manufactured in India under cooperation with Bharat Electronics Limited. "This system, which will arrive in the next few months, is a huge capability enhancement of our anti-submarine warfare. ACTAS is the backbone of anti-submarine warfare," defence sources said. The towed array sonar provided by ATLAS permits observation of the sea space at ranges considerably above 60 kilometres, depending on the propagation conditions of the water. This gives the sonar an operational range that by far exceeds that of radars and the weapons range of submarines.The system is, therefore, not only ideal for hunting submarines but also for the wide-area reconnaissance of surface combatants. "Indian ships currently use bow mounted sonar or hull mounted sonar which is less effective. ACTAS is the future," the sources said. They added that the system is first being put on Kamorta-class anti-submarine corvettes. The project is destined to be rolled out to various classes of ships including Delhi, Talwar, Shivalik and Kolkata.


Read more:
Navy to get Sonar systems for anti-sub warfare from Germany

 

[Dharmateja]

It same with all modern ship hull designs ..

But just look at this.. i don't know what to make of the quality of metal they're using.