Indian Naval Discussion

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Re: Indian Naval Discussion

Postby K_Rohit » 16 Feb 2010 17:42

Is this a IAC model on the livefist blog? If so, is that 2 Kashtan-type CIWS systems on the carrier? I thought that the Navy had standardized Barak or Barak+Gun combo as the standard CIWS. Just surprised, thats all!

http://3.bp.blogspot.com/_o_no4M2xEPY/S ... 715918.JPG

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Re: Indian Naval Discussion

Postby Venu » 16 Feb 2010 18:11

Looks more like Vikky to me. Observe the typical narrow ramp!!

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Re: Indian Naval Discussion

Postby Srivastav » 16 Feb 2010 18:36

well INS Vikramaditya has deck centre lifts....and if this model is accurately made then it can't be Vikramaditya because i cannot see any lifts in the centre. Ofcourse it is possible that the model is not exact and lift are not shown.

This could be an old model of Vikrant class or hastily done model of Vik.

edit: (The front ski part does look like Vik's so most likely venu is right)
Last edited by Srivastav on 16 Feb 2010 18:45, edited 4 times in total.

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Re: Indian Naval Discussion

Postby ankit-s » 16 Feb 2010 18:38

tsarkar wrote:Ankit, et al, how a ship appears visually is NOT reflective of its structural strength.



structural strenghth was not an issue here, but Aesthetic was.

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Re: Indian Naval Discussion

Postby Gerard » 16 Feb 2010 19:03

I had inlined a version of this but it got replaced by a big smiley

Image

Christening ceremony for USS New York in 2008

Just look at that welding seam.

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Re: Indian Naval Discussion

Postby Philip » 16 Feb 2010 19:39

The model is the IAC,but there are several models and illustrations and one does not know what is the actual final design.The IAC in all pics,though appears not to be able to launch and recover aircraft simultaneously,unless VSTOL/STOVL aircraft are carried later on.Even with the weaponry aboard,there could be new developments like the LR Barak and variations of the Kashtan CIWS that might be in service by 2013+.

John has also popinted out a true fact,that our yards just cannot produce ships and subs on time.Adm.Arun Prakash in a mag interview said that even indigenisation figures are grossly misleading as while the hull displacement wise the largest component, might be mostly of Indian origin which also costs the least,the rest of the eqpt. like engines,machinery,weapons and sensors are all imported or built under licence like the Dutch radars.Trishul was a disaster and we had to import Barak,while most of the anti-ship and anti-sub missiles are either Brahmos or Klub-of Russian origin.If we want our numbers to be healthy for the IN we have no alternative but to collaborate with some foreign yards like the Russians,DCN,Fincantieri,etc.,to produce hybrid designs that can be built both abroad and at home.The urgent requirement is now the second line of subs and sub production.Since Brahmos will be a major advantage if fitted aboard our subs,a quick decision to acquire Brahmos Amurs in a parallel building programme would save time and money and allow us to then then concentrate upon what will replace the Scorpene line when completed.We must also make a detailed comparison between the two major AIP systems prevalent or available,fuel-cell or MESMA

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Re: Indian Naval Discussion

Postby ankit-s » 16 Feb 2010 19:39

Anyone know more on this? Please add to this. I would love to know more tradition.


Rule number one, it has to be (always) a woman-lady to handle this job as per Indian traditions. Coconut is preferred to that of champagne as in western countries......


According to naval traditions, at the commencement of the naming and launching ceremony, the woman names the ship with customary words: “I have great pleasure in naming this ship Indian Naval Ship Sindhughosh (or as the case may be). May good fortune attend her and all those who sail her.”

Thereafter she applies ‘kumkum’ (vermilion) on the stem of the ship, folds her hands in a silent prayer, and then breaks the coconut on the bows of the ship.

“And with the splash of coconut water, the ship begins to slide down. Even if an Indian warship is commissioned in a foreign port, it is customary that the ship is named at the commissioning ceremony itself,” the official adds.

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Re: Indian Naval Discussion

Postby ankit-s » 16 Feb 2010 19:48

Gerard wrote:I had inlined a version of this but it got replaced by a big smiley

Image

Christening ceremony for USS New York in 2008

Just look at that welding seam.



Okey n look at the bow section completely polished - a quasi seamlesss appearance of a bow section.....This was a ship made of twin towers steel !

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Re: Indian Naval Discussion

Postby Vipul » 16 Feb 2010 20:43


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Re: Indian Naval Discussion

Postby nachiket » 16 Feb 2010 21:43

ankit-s wrote:
tsarkar wrote:Ankit, et al, how a ship appears visually is NOT reflective of its structural strength.



structural strenghth was not an issue here, but Aesthetic was.


Did you even read this post??
Structural strength is the only issue. It doesn't matter if a fleet tanker is not beautiful enough for you.

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Re: Indian Naval Discussion

Postby Craig Alpert » 17 Feb 2010 01:26

First Underwater Launch Imminent, BrahMos Holds Talks With P-75(I) Contenders
Caught up with BrahMos CEO Dr A Sivathanu Pillai this afternoon on Day 2 of DefExpo. Things are moving rapidly towards the missile's first underwater platform launch that is planned within the next three-four months. Minor modifications to the land version's low-thrust booster are complete for the cannisterised sub-surface launch, and the test will be conducted off the coast of Orissa possibly sometime in May or June this year.

At DefExpo today, in a closed meeting room behind the glitzy BrahMos pavillion, Dr Pillai and his partners from Russia's NPO Mashinostroeyenia met representatives of Russia's Rubin Design Bureau, designers of the Amur-class submarine, one of the possible contenders for the Indian Navy's Project 75 (India) licensed submarine building competition. Dr Pillai said detailed discussions were held on BrahMos as standard fit for the design that is finally offered to the Indian Navy. A similar meeting is scheduled for tomorrow when BrahMos engineers will meet counterparts from German submarine maker HDW, for discussions on its Class-214 boat, also potentially in contention for the six-boat licensed manufacturing deal with the Indian Navy. BrahMos' earlier desire to integrate the supersonic cruise missile with the fifth and sixth Scorpene boats to be manufactured at the Mazagon shipyard fell through after the Navy said it planned to integrate air-independent propulsion to the last two boats, thereby already increasing the length of the submarine considerably.

On the air-launched BrahMos, Dr Pillai said that launcher fabrication was underway at BrahMos' Trivandrum facility, and missile ground tests were currently underway, which include structural tests of the different cap-dome. Coming up soon are pyro-system reliability tests, which could take a huge test routine, with the test of an inert missile in one year. Following that will be the test of a technology missile -- fully loaded with all avionics and electronics, for drop-tests, pilot level operations tests etc, scheduled for 2011. The actual missile will be fired in full ops configuration in early 2012 if all goes well. The IAF has already committed two HAL Nashik-built Su-30MKIs for integration test between the middle of this year and 2012.

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Re: Indian Naval Discussion

Postby nikhil_p » 17 Feb 2010 02:22

nachiket wrote:
ankit-s wrote:Ankit, et al, how a ship appears visually is NOT reflective of its structural strength.



structural strenghth was not an issue here, but Aesthetic was.

Did you even read this post??
Structural strength is the only issue. It doesn't matter if a fleet tanker is not beautiful enough for you.


Aesthetics and defence dont go so well together. That is why you would select a rough looking and riding Jeep over a lamborghini or a ferrari anytime.
Anyways, please look closely at the picture below...do you see the weld lines??
[url]
Image[/url]

And this is a warship...Also see how the plates look a little 'unfinished'.

War ships are not about beauty paegents...they are about work.

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Re: Indian Naval Discussion

Postby putnanja » 17 Feb 2010 06:12

Gorshkov tab is fixed at $2.34 bn

Six years after the first agreement and the price escalation and hard talks that followed, the Defence Ministry is all set to seek the approval of the Cabinet Committee on Security (CCS) for acquisition of the aircraft carrier Admiral Gorshkov from Russia at a final cost of $2.34 billion — in January 2004, India first agreed to acquire Gorshkov at the refit cost of $974 million.
...
...
During the Putin visit, an agreement to purchase another 29 MiG-29 K multi-role carrier-based fighters at a cost of $1.12 billion will be signed.

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Re: Indian Naval Discussion

Postby ravar » 17 Feb 2010 10:16

X-posted from Mil acq & partnership

Translated from http://www.mathrubhumi.com/story.php?id=83854

Image

Unmanned submarine undergoes trial at Idukki dam

Posted on : 17 Feb
Bangalore: The indigenously developed unmanned submarine has been tested successfully. The AUV (Autonomous Underwater Vehicle) -150 brought from Durgapur, West Bengal under utmost secrecy underwent the trials at the Idukki reservoir.
The vehicle has been developed by Central Mechanical Engineering Research Institute (CMERI), based at Durgapur in collaboration with DRDO. It can collect information under water remotely without any crew or captain much like a remotely controlled pilotless aircraft. Built with the intent of coastal security, AUV 150 will also be used to study aquatic life and minerals and to map oceans, said Dr. S.N. Som, the head of Robotics and Automation, CMERI. IIT Gorakhpur is also collaborating in the project.
Brought in a container over land from Durgapur upto Kulamavu reservoir at Idukki , the vehicle was later taken to the middle of the reservoir on a boat. Though CMERI officials declined to comment on the exact date of the tests, they indicated that the trials were conducted in January. The current trials were that of runs in fresh water. Since Kulamavu has a centre associated with Navy and also the reservoir being very deep, the choice fell on Idukki. The vehicle is yet to undergo sea trials.
With a length of 4.8 metres and weighing 490 kgs, AUV 150 is controlled remotely from land using wireless technology. It runs on battery. Dr. Som added that it would render invaluable service to Coast Guard and Navy. The US, Russia, Germany, Japan, Australia, South Korea are the other nations having such submarines.

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Re: Indian Naval Discussion

Postby dorai » 17 Feb 2010 16:16

Image

Gripen presents naval variant to navy
Wednesday, February 17, 2010
By Saurabh Joshi

Gripen has made presentations of its Sea Gripen fighter aircraft to the Indian Navy last week.

Tony Ogilvy, Vice President, International Marketing for Gripen informed StratPost that his company had made presentations to the navy last week and said the response was ‘very good’.

Ogilvy, who is also a former Royal Navy Buccaneer and Sea Harrier pilot, said the ‘inherent design characteristics’ of the Gripen aircraft make it ‘very similar to a deck based aircraft’.

He said that in the two-hour presentation, which took place last Friday, Sea Gripen’s salt water protection characteristics and maritime operational engine and its ability to operate off both CATOBAR and STOBAR carriers were some of the features highlighted.

According to Ogilvy, the Sea Gripen is being especially pitched to nations which are looking for compact carriers and are not necessarily interested in global force projection capabilities. The aircraft is said to have a very small footprint and is very easy to operate off smaller carriers.

So would the Sea Gripen be good for the Indian 40,000 ton Vikrant class carrier under construction? “Perfect,” said Ogilvy.

Gripen is also being pitched to the Indian Air Force (IAF) for the 126 Medium Multi Role Combat Aircraft (MMRCA) tender. Edvard de la Motte, Director of Gripen’s India campaign told StratPost that the the third phase of trials of the aircraft are likely to begin in March, when the aircraft will be tested in Bangalore, Jaisalmer and Leh.


http://www.stratpost.com/gripen-present ... nt-to-navy

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Re: Indian Naval Discussion

Postby D Roy » 17 Feb 2010 17:20

back from defexpo,
some info that is probably already known,

-varunastra can do 40 knots in the 30 km range. presently meant for surface ships. submarine version in the works.

- thermal torpedo can do 50 knots.

-TAL does 30 knots.

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Re: Indian Naval Discussion

Postby ankit-s » 17 Feb 2010 17:38

And this is a warship...Also see how the plates look a little 'unfinished'.

War ships are not about beauty paegents...they are about work.



Isnt there a difference between unfinished n little unfinished ?

BTW

why there are no such welding joints in the following bow section:


http://tinyurl.com/y8w5zoy

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Re: Indian Naval Discussion

Postby ankit-s » 17 Feb 2010 18:14

The weld joints are looking raised because they were welded from outside and not inside. the reason being, the mass carried by a tanker is inside the ship, where we would have baffles to prevent sloshing of the liquid. Also, the pressure on the hull will be higher and a greater amount of FLEX will be needed. Do a simple experiment. take to paper sheets/or flexible cardboard. Tape their edges together without overlap on one side with some basic cellophane tape. Now push on the side that the tape is on. Better still put some weight on it and hold the edges with the weight pushing down (let gravity do the trick). Time it to see how long it takes to break tne bond. Now do the same experiment with the tape outside. Let me know the results.



My friend before you forget, the said tanker is double hull, and more, it is Equipped with double hatches - that would hold the fuel...........what sloshing effect you are talking that could do the damage to outer hull and thereby justifying the weld joints?

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Re: Indian Naval Discussion

Postby shukla » 17 Feb 2010 19:01

Russia to deliver Gorshkov by end 2012....

Russia will deliver the Admiral Gorshkov aircraft carrier to India at the end of 2012, the deputy head of Russia's agency for military-technical cooperation said on Tuesday.


http://english.people.com.cn/90001/9077 ... 95701.html

Also, Gorshkov FINAL price $2.34bn

Six years after the first agreement and the price escalation and hard talks that followed, the Defence Ministry is all set to seek the approval of the Cabinet Committee on Security (CCS) for acquisition of the aircraft carrier Admiral Gorshkov from Russia at a final cost of $2.34 billion


“The Gorshkov deal is in the final stages and the agreement will be signed as soon as the CCS gives a green signal to the proposal,” a senior official told The Indian Express.


http://www.indianexpress.com/news/Gorsh ... -bn/580817

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Re: Indian Naval Discussion

Postby Kanson » 17 Feb 2010 19:11

D Roy wrote:-varunastra can do 40 knots in the 30 km range. presently meant for surface ships. submarine version in the works.

dang...very well then the news which talked about submairne testing could be this...

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Re: Indian Naval Discussion

Postby ankit-s » 17 Feb 2010 19:20

Structural strength is the only issue


Do we say bye bye to structral integrity 2 a ship´s hull if we polish-smoothen the welding joints ?


If your reply is NO, then why are we going back and forth on this?

If your answer is YES, then its a pandora´s box being opened!

Your move...

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Re: Indian Naval Discussion

Postby shukla » 17 Feb 2010 19:48

thanks for the post..

dorai wrote:He said that in the two-hour presentation, which took place last Friday, Sea Gripen’s salt water protection characteristics and maritime operational engine and its ability to operate off both CATOBAR and STOBAR carriers were some of the features highlighted.


That would surely interest IN..

dorai wrote:According to Ogilvy, the Sea Gripen is being especially pitched to nations which are looking for compact carriers and are not necessarily interested in global force projection capabilities.


But that wouldn't be the wisest sales pitch to make to a nation dreaming of becoming an economic, political & military force of the future..power projection would matter...

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Re: Indian Naval Discussion

Postby Vipul » 17 Feb 2010 20:01

Arihant to be armed with ballistic missiles.
The man steering India’s highly classified nuclear-powered submarine programme has acknowledged for the first time that the warship will be armed with ballistic missiles.

Vice-Admiral D.P.S. Varma (retd), Director General, Advanced Technology Vehicle (ATV) project, told HT at DEFEXPO-2010, “The K-15 submarine-launched ballistic missiles jolly well be there on INS Arihant when it is inducted into the Navy. The N-sub should hopefully be with the Navy by the end of 2011.”

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Re: Indian Naval Discussion

Postby neeraj » 17 Feb 2010 21:29

Project 15 INS Chennai model (Kolkata class)
Compare the above with INS Delhi. Good improvement with overall design and stealth

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Re: Indian Naval Discussion

Postby Pratik_S » 17 Feb 2010 21:39

neeraj wrote:Project 15 INS Chennai model (Kolkata class)
Compare the above with INS Delhi. Good improvement with overall design and stealth



Still not truly a stealthy vessel. Meanwhile I read a article somewhere a few months back on a Corvette being built in Kolkatta for the navy. Its supposedly extremely stealthy vessel. Do you have any info on that ??

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Re: Indian Naval Discussion

Postby Anoop. A. » 17 Feb 2010 22:49

smpratik wrote:
neeraj wrote:Project 15 INS Chennai model (Kolkata class)
Compare the above with INS Delhi. Good improvement with overall design and stealth



Still not truly a stealthy vessel. Meanwhile I read a article somewhere a few months back on a Corvette being built in Kolkatta for the navy. Its supposedly extremely stealthy vessel. Do you have any info on that ??


I believe you are taking about P-28 Corvettes.

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Re: Indian Naval Discussion

Postby vavinash » 17 Feb 2010 22:57

I can see 16 Brahmos and 24 Barak-II in front. Then 2 RBU-6000's and the LWT launchers and HWT Launchers mid section. There are 2 Ak-630 guns on the sides but are there Barak-2 launchers between them? Also Are there 12 Barak-1 launchers besides the Hangar?

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Re: Indian Naval Discussion

Postby Austin » 18 Feb 2010 00:03


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Re: Indian Naval Discussion

Postby Craig Alpert » 18 Feb 2010 05:27

Image Fleet Tanker INS DEEPAK
Image Image

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Re: Indian Naval Discussion

Postby Khalsa » 18 Feb 2010 07:25

Gents
i need some clarification ?
Both Dhanush and Shaurya are both Prithvi based missiles. ?
If yes then whats the difference ?
and why two streams of missiles development for the Navy ?

thanks

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Re: Indian Naval Discussion

Postby Venu » 18 Feb 2010 09:18

No, Shaurya and Dhanush has no relation at all.

Dhanush, as you said, is essentially a ship launched Prithvi and is ballistic.

Shaurya, OTOH, is a hypersonic cruise missile. It never leaves the atmosphere in its flight and is not based on Prithvi.

Lot of buzz is happening here on BR about shaurya. You can get a lot of analyses on shaurya just by reading them and I recommend it.

Additionally,Dhanush and PAD are based on Prithvi, just an FYI.

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Re: Indian Naval Discussion

Postby nikhil_p » 18 Feb 2010 13:08

ankit-s wrote:
And this is a warship...Also see how the plates look a little 'unfinished'.

War ships are not about beauty paegents...they are about work.



Isnt there a difference between unfinished n little unfinished ?

BTW

why there are no such welding joints in the following bow section:


http://tinyurl.com/y8w5zoy

:rotfl:
you comparing a submarine bow to a ship bow... well dont you take the pain to read what we post I suppose Rahul did mention something about anechoic tiles some posts ago...
anyways, on a sub what you see there is not the hull directly but the hull covered with rubber (I am generalizing it)...same way how your mijjile will look without the lines when rubberised! :wink:



ankit-s wrote:
The weld joints are looking raised because they were welded from outside and not inside. the reason being, the mass carried by a tanker is inside the ship, where we would have baffles to prevent sloshing of the liquid. Also, the pressure on the hull will be higher and a greater amount of FLEX will be needed. Do a simple experiment. take to paper sheets/or flexible cardboard. Tape their edges together without overlap on one side with some basic cellophane tape. Now push on the side that the tape is on. Better still put some weight on it and hold the edges with the weight pushing down (let gravity do the trick). Time it to see how long it takes to break tne bond. Now do the same experiment with the tape outside. Let me know the results.



My friend before you forget, the said tanker is double hull, and more, it is Equipped with double hatches - that would hold the fuel...........what sloshing effect you are talking that could do the damage to outer hull and thereby justifying the weld joints?


what has double hatches got to do with the current discussion...however let me tell you 'ALMOST' all tankers, rather almost all Fuel/liquid storage above ships are done under double hatches. Simply because it acts as a simplified barrier, is easier to maintain and is generally safer.

About the double hull...this kind of double hull is not like the submarine double hull. It is basically an outer hull which is exposed to the elements however is not resistant to effects of the fluids. This is generally ship grade steel. Then there is an inner 'hull' which actually is the tank itself. The tank is divided into multiple sections. This 'hull' is made up of either stainless steel, or even in some cases plastic (acid carriers).
The sloshing effect I spoke about is what happens due to the pressure exerted by the inertia of the fluid in the tank on its walls, which then puts a certain amount of pressure on the bulkheads which is transferred to the outer hull. This pressure is against the direction of the pressure exerted by sea water.

Added later: I just re read what you wrote about hatches holding the fuel...do you even know what hatches are????


ankit-s wrote:Do we say bye bye to structral integrity 2 a ship´s hull if we polish-smoothen the welding joints ?


If your reply is NO, then why are we going back and forth on this?

If your answer is YES, then its a pandora´s box being opened!

Your move...


Well...we are not playing chess...however, my move...

a big YES...structural integrity is affected by polishing the weld joints in any scenarios where the weld joint may be exposed to pressures higher than the coeff of elasticity of the weld joint. a simple solution is to put more metal in...which will stretch that little bit more to preserve the joint.
simply put...on a ship the weld joint will be exposed to a very high pressure from the moving/flexing hull.which is generally higher than what you would experience on say a car weld joint.
For the same reason boiler weld joints are NEVER polished...

About the 'finishing'...a ship will have multiple coats of paint applied before it is commisioned...

And yes...please take the effort to read the posts we make...we put in the effort.

one more thing...you didnt answer my questions in the first post i made to respond to you...
Last edited by Rahul M on 18 Feb 2010 15:05, edited 1 time in total.
Reason: fontsize edit.

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Re: Indian Naval Discussion

Postby Philip » 18 Feb 2010 13:18

The full report (link posted above) indicates that there are two SSGNs being built as well as the 5/6 ATVs,echoing an an earlier post I remarked that I had spotted a tiny pic of the SSGN cut-away design,will try and locate/post the pic later,supposedly of displacement of about 5-6,000t,that will carry a variety of missiles and TTs.Given that there should be about one SSGN/attack nuclear sub for every SSBN,it would also mean that more Akulas are planned to be acquired,perhaps two more.

http://www.globalsecuritynewswire.org/g ... 7_6490.php

Indian Sub to Carry Ballistic Missiles, Official Confirms
Wednesday, Feb. 17, 2010

The official overseeing India's work on an experimental submarine has confirmed that the vessel is intended to carry nuclear-capable ballistic missiles, the Hindustan Times reported today (see GSN, Aug. 19, 2009).

"The K-15 submarine-launched ballistic missiles jolly well [will] be there on INS Arihant when it is inducted into the navy," said former Indian Vice Adm. D.P.S. Varma, head of the nation's Advanced Technology Vessel program. The Arihant could transport a dozen K-15 ballistic missiles, each capable of carrying a nuclear warhead as far as 430 miles.

The military will "hopefully" receive the submarine before the end of next year, Varma said.

"We are on track" in developing the vessel, the official added. "But the proof of the pudding lies in the eating. So we will know when the navy inducts it."

India eventually intends to deploy five or six ballistic-missile submarines, Varma said, adding that two other nuclear-powered vessels being planned could provide backing to the nation's nuclear deterrent.

“We have to cross a certain milestone before going into specifics,” he said.

The submarines would help New Delhi complete a nuclear "triad" of land-, air- and sea-based weapons (Rahul Singh, Hindustan Times, Feb. 17).

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Re: Indian Naval Discussion

Postby Khalsa » 18 Feb 2010 13:30

Venu wrote:No, Shaurya and Dhanush has no relation at all.

Dhanush, as you said, is essentially a ship launched Prithvi and is ballistic.

Shaurya, OTOH, is a hypersonic cruise missile. It never leaves the atmosphere in its flight and is not based on Prithvi.

Lot of buzz is happening here on BR about shaurya. You can get a lot of analyses on shaurya just by reading them and I recommend it.

Additionally,Dhanush and PAD are based on Prithvi, just an FYI.



Thanks Venu.
Quick and straight to the point just as I like it. Will brush up on the Shaurya info as suggested.
Re: your last sentence .. PAD ??

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Re: Indian Naval Discussion

Postby Pratik_S » 18 Feb 2010 15:03

Venu wrote:Shaurya, OTOH, is a hypersonic cruise missile. It never leaves the atmosphere in its flight and is not based on Prithvi.


Are you sure? Most articles and Wiki link suggest that Shaurya is a Ballistic Missile, don't you think its a very large to be a cruise missile ?

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Re: Indian Naval Discussion

Postby Pratik_S » 18 Feb 2010 15:06

Anoop. A. wrote:I believe you are taking about P-28 Corvettes.


Yup thats right, saw a image of the vessel on BR site but it still doesn't look very stealthy.

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Re: Indian Naval Discussion

Postby SNaik » 18 Feb 2010 15:17

smpratik wrote:
Venu wrote:Shaurya, OTOH, is a hypersonic cruise missile. It never leaves the atmosphere in its flight and is not based on Prithvi.


Are you sure? Most articles and Wiki link suggest that Shaurya is a Ballistic Missile, don't you think its a very large to be a cruise missile ?


Missile is called ballistic due to it's ballistic flightpath and not because it leaves the atmosphere. So Shaurya is ballistic ok, although it may have some additional terminal guidance and maneuvering WH.

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Re: Indian Naval Discussion

Postby SNaik » 18 Feb 2010 15:21

vavinash wrote:I can see 16 Brahmos and 24 Barak-II in front. Then 2 RBU-6000's and the LWT launchers and HWT Launchers mid section. There are 2 Ak-630 guns on the sides but are there Barak-2 launchers between them? Also Are there 12 Barak-1 launchers besides the Hangar?


16 Brahmos, 16 Barak-8 in front of bridge, 8 Barak-1 between AK-630s on each side, 16 Barak-8 aft, just forward of the hangar. The white spots on the side of hangar are banks of rescue rafts, IMHO. The model is very limited in depicting associated electronic systems and I sincerely hope that 324mm TTs have doors and 533 TTs will be accomodated below deck. The RBUs will give a lot of RCS from certain angles.
Last edited by SNaik on 18 Feb 2010 15:34, edited 1 time in total.

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Re: Indian Naval Discussion

Postby ankit-s » 18 Feb 2010 15:31

Nikhil_P - As you said in the following:

on a sub what you see there is not the hull directly but the hull covered with rubber (I am generalizing it)

Tiles job is a well known fact but why dont you comprehend how it is possible to stick the 100 MM tiles on UNEVEN hull surface with welding joints portruding? Should not this be common sense, as you will have air pockets left within, because weld joints are never known to be uniform ? What is the use of such rubber accoustic tiles, if they are not adequately bonded with the hull surface against sound deadening? How will the tiles absorb the sound if there is air medium in between? For this kind of job the surface is required 2 be RIDGE FREE....

Well, are not the submarine´s weld joints thoroughly checked by digitised ultrasonic machines, Metallurgical Microscope during mettalographic examination against a minor defect on a submarine? Modern welding technics ensure tensile strenght and hardness of welded surface. If a subsequent inspection certify that complete peneteration has taken place between the joints, (without which submarine can not enter water), so what is the big deal if the surface is grinded and polished for acoustic rubber tiles ?

So why do you think they would NOT have shaved off raised weld beads?


I will be back for yr next part of post......

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Re: Indian Naval Discussion

Postby Jamal K. Malik » 18 Feb 2010 17:09

Akula nuclear submarine to be delivered to India by May
Vinay Shukla

Moscow, Feb 18 (PTI) Indian Navy will regain its underwater warfare nuclear capability in the next 60-days with the Russians assuring that the Akula-II class attack submarine the Nerpa would be delivered by mid-May.

The assurance that the nuclear submarine would be delivered "strictly on schedule" was given by top Russian shipbuilding officials to the Prime Minister Vladimir Putin, who is to visit New Delhi on a state visit next month.

Nerpa has been handed over to the Russian Navy for its sea trials.


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