The sub is off to Singapore. As you can see, kaboosh, sub conning tower meets champagne bottle. Hopefully, our coconut hits the side of a plexiglass next to the hull.Amazing! This is the first picture of the ATVGagan wrote:This is all the ATV we are going to get to see.
They usually stop at Kamat Sagar Yatrinivas for food supplies.kasthuri wrote:Even if they run out of food, can any other submarine deliver food, like mid-air refueling? In that case, they don't have to come out of water at all...Gagan wrote:Of course they are for extracting oxygen on subs. The distilled water is electolyzed to give oxygen for breathing. It is just that DE subs don't have the space and the electrical power to run this level of power hungry operation.
This is why nuclear subs are said to have unlimited endurance limited only by the food running out. They don't have to surface for air.
shiv, I am going to kill you for making me almost die laughingshiv wrote:So far this is the best image of the ATV released anywhere. I have scoured all TV channels and could not find a better image
http://img22.imageshack.us/img22/3938/19946657.jpg
First things first-- DDM is visible based on the Russian Borat-class as*clown(moments before we never really saw the actual sub in its dock, we noticed DDM were officially trying to pass off a retired sub in a park as the Arihant, indicating they are almost definitely based on Borat).First things first -- the submarine is visible based on the Russian Borei-class SSBN (moments before we saw the real sub in its dock, we noticed the official invitation had a silhouette of the submarine indicating that it's almost definitely based on the Borei). The submarine has a launch crew commanded by Captain Anshuman Dutt. A phenomenal sight in the Matsya Dock of the Shipbuilding Center (SBC), the submarine was slowly towed out, as we I and other journalists sat ten metres from it, pretty much just in absolute amazement, and simply overwhelmed by the moment. The advanced technology vessel!
A dark matted olive shade, its anechoic tiles clearly demarcated (or a bad weld job?) The boat, bearing all the obvious signs of Russian influence, will undergo harbour acceptance trials (HATs) and full systems trials over the next one year, followed by sea trials and then weapon systems trials. The boat does not have a towed array sonar pod, and has a gradual gradiented hump. According to the official figures released today, the submarine is 110-meters long, 11-metres wide and has a submerged displacement of 6,000-tons.
This is the "Let me save my honor while I view Indian stuff with disdain and show what I know that others don't" mode being switched on..somnathmukherjee wrote:Gerard,
Are we talking of nuclear missiles or nuclear subs??? Are we disputing geo-politics/hegemony or engineering/shipbuilding skills?
I was refering to this:
http://www.royalnavy.mod.uk/operations- ... ubmarines/
http://www.royalnavy.mod.uk/operations- ... submarine/
http://www.baesystems.com/BAEProd/group ... asheet.pdf
somnathmukherjee wrote:Gerard,
What do you suggest ... 're-invent the wheel'???
To us it appears UK is dependent on US...to them its collaboration (unlike ours with Russia arm twisting all the time)
And you are a coconut with you head up the gora's asssomnathmukherjee wrote:Shiv...you think you are a smart ass..... I think you are a dumb ass living in a constant denial mode
to this:somnathmukherjee wrote: So much hogwash for 'indigenous design' 'blah...blah...blah....' !!!
Quite some wiggling out I saysomnathmukherjee wrote: What do you suggest ... 're-invent the wheel'???
BTW if you cant build the wheel, during war your cart won't run unless the wheel maker desires so Have you ever followed US 'collaborative' efforts and all the draconian EUMA/blah-blah restrictions on exported US technology?somnathmukherjee wrote: To us it appears UK is dependent on US...to them its collaboration (unlike ours with Russia arm twisting all the time)
Don't worry Mukherjee babu, BRF is here for ya and will educate you if you are willing! Someone quoted on the previous page that it looked like a video from a phone camera...sunilUpa wrote:Looks like official video release. Apparently there were three photo/videographers.
Gerard wrote:BBC just ran video of coconut breaking (water streaming from the midline pre-cut), MMS speaking (Arihant behind him with sailors standing on top) with a quick pan of the people inside the SBC. The <1 sec pan looked like camera phone quality.
well its first nuclear submarine and future submarines depend on the performance of this submarines so its at least testbed.Gagan wrote:The indigenous content is said to be about 40% as per the interview of Vice Admiral A.K. Singh, which will go up to about 70% in the next two subs.
Tech demonstrators don't have anechoic tiles on them. Besides I don't think India has $700 million to blow on just a tech demonstrator.
THE dream of over a quarter of a century will be fulfilled today when Ms Gursharan Kaur, wife of Prime Minister Manmohan Singh, breaks the coconut on the hull of India’s first indigenously constructed nuclear- propelled ballistic missile submarine — called a boomer in popular parlance — at a super- secret Naval base in Visakhapatnam.
At that moment, the 112- metre long black marine monster, now named Arihant ( destroyer of the enemy and it will only be "INS" Arihant after it is commissioned), will be pulled out of its lair — a covered dry dock, nearly halfa- kilometre long and 50 metre deep — where it has been conceived and grown. The building, called the Ship Building Centre at INS Virbhau, the Navy’s base in Vizag, is at the very end of the harbour.
The Indian Navy and the Defence Research and Development Organisation ( DRDO) have expended a great deal of treasure and sweat to reach this point. A year from now, after harbour and sea trials, the Arihant, with a complement of 23 officers and 72 sailors, will join the naval fleet.
What is so special about a boomer? Everything, if you see it from the point of view of the country’s nuclear deterrent.Because of India’s “ no first use” pledge, our weapons must survive a first strike for retaliation.
So the Arihant’s primary weapon is stealth. It can lurk in ocean depths of half a kilometre and more and fire the Sagarika from under the sea. The key lies in its nuclear propulsion. The nuclear reactor of the sub generates heat to turn water into steam in a generator which, in turn, drives the turbine generators which supply the ship with electricity and drive the main propulsion turbines and propeller. There is no stage which requires air or oxygen.
SUBMARINES can be detected by sonar, or sound ranging, and so not only has the Arihant’s propulsion system given a double shield, its outer hull is covered by thick rubber tiles studded with conical gaps that trap sound.
After the first trial of the steam cycle and turbines, the Arihant will be hooked up to the nuclear reactor. The reactor’s fuel rods are currently locked and sealed.They will be unlocked and neutrons will be introduced to start up the 85 MW pressurised water reactor. The reactor will work continuously for anything up to 10 years till the fuel runs out.Then it will be brought back to the dock, the reactor compartment will be cut open, new fuel rods inserted and resealed.
Arihant’s construction got underway in 1998 with Larsen & Toubro machining 13 sections of the hull at its plant in Hazira to a design provided by the Malakit design bureau of Russia. These were then taken in a barge to Vizag and outfitted with their respective equipment — missile launchers, combat information systems, torpedo tubes, ballast tanks, living spaces, sonars, steam generator and turbine and so on. Then they were welded into three distinct sections. The first contained the sonar equipment, torpedo tubes and control systems. The second section comprised of the combat information systems and an array of electronic equipment, accommodation as well as the ballistic missile launchers. The third section, distinct and specially shielded, comprised of the reactor and the steam turbine and gearings.
Considering that India began its first project for the sub in the late 1970s, you could well ask why it has taken so much time.The short answer is that we are not as advanced as we think we are when it comes to engineering, metallurgy, and nuclear science.
The first glimmer of this was visible when in the early 1980s the first project ran aground after spending some $ 4 million ( Rs 20 crore). The second project under the auspices of the DRDO worked on different assumptions, but even it has had a rocky ride.
The plan was for India to acquire the drawings of the Russian Charlie II submarine and fabricate it, and at the same time design its own 100 MW reactor. A new Advanced Technology Vessel programme was created. At the same time, in 1988, a Charlie II, renamed Chakra, was leased from the Soviet Union. The idea was to run it till we had made our own.
UNFORTUNATELY, the Soviet Union collapsed and there was no extension of the lease. By then we had created a number of facilities which included a special pier with a 60- tonne crane, radiation safety services, swimming dock, slipway and workshop, but the project remained in the doldrums.
This was the time, in the mid- 1990s, when the ATV organisation realised how much of a long haul it would be. Components and assemblies for nuclear- propelled submarines had to have a very high quality requirement, something the country lacked.For obvious reasons, precision welding is one of the most important aspects of submarine construction.
More troubling was the fact that the reactor made by the Indira Gandhi Atomic Research Centre, Kalpakkam could not make grade. Once again the Russians helped, quietly.They provided equipment for two VM- 5 pressurised water reactors, one of which was assembled and tested at Kalpakkam’s Prototype Testing Centre in 2004. The Russians have also been helping with the design of the Sagarika, the ballistic missile that will be the main weapon of the Arihant.
The big challenge for the engineers was to use the Charlie II design and modify it by adding one more compartment, the one that carried the ballistic missile tubes which increased its length by 10 m or so. But they managed this and earlier this year the reactor and propulsion unit was finally welded to the other two units. Many Indian companies have been involved. The uranium, enriched at around 20 per cent, has been provided by the Indian uranium enrichment facility at Ratnehalli, near Mysore.
India has another nuclear- propelled submarine en route in 2010, an Akula- class Russian attack submarine which differs from the Arihant which is a ballistic missile sub. Such subs are used to hunt down enemy submarines and ships. Curiously, no one seems to know who wants the Akula. The Navy brass insists it is not them. But the country is expected to spend $ 700 million ( Rs 350 crore) to lease it for a period of 10 years. But then this is what keeps the country’s defence purchases booming.
Strictyly FYI onlyNRao wrote:Sure, that is one aspect I did not think of.
Anonymous said...
Shiv, can you please list the noticeable features. Screw propeller or water jet? where were the torpedo tubes located? any stabilizers? Type of tail fin assembly(ie cross, X)? Did it really resemble the Borei-class. Was the hump straemlined like the Borei's or protruding above hull?
9:37 AM
Anonymous said...
Shiv, was the hump like this Chinese Type 094? ie protruding above the hull unlike the streamlined Borei's one?
10:08 AM
Raoul said...
Hi, can you please post some photos of the sub please?
10:57 AM
Anonymous said...
hi everyone: the hump was gradual and streamlined, not abrupt. we didn't get a look at the propeller, it was already submerged by the time we got there. and there's no towed array sonar pod.
12:42 PM
Dont know, considering the no.of posts logged you are in better position to answer that.But that is what we do on BR too?
"a destabilising step which would jeopardise the security paradigm of the entire Indian Ocean region"... government will have to decide about Pakistan making its own nuclear submarine though the navy is fully prepared to implement any decision taken by the government...
Defence Minister A K Antony said the nuclear submarine was crucial for a credible second strike capability in view of India's voluntary 'no first use' nuclear weapon policy.
100%. Nobody plays nice in this game...Neela wrote:What are the chances of the above happening?
Yes, 100%. Presently nuke-nude yindoo submarine with still healing coconut scar will be escorted by ASW equipped ships and some non-Foxtrots to mask propellor noise and keep foreign submarines at kosher distance. Expect an underwater traffic jam around Visakhapatnam when it is time for Arihant's full-fledged Baptism.Neela wrote:If it is the case, will the Navy offer some kind of protection every time it is in water?
does IN use frogmen, for providing protection to its vessels during foreign port calls ?Neela wrote: If it is the case, will the Navy offer some kind of protection every time it is in water?
KrishG wrote:Based on Sandeep Unninathan's/Shiv Aroor's drawings of Arihant, I have come up with a new 3d-model. I'm still working on it. I'll post the basic hull shape of this design.
It looks like you have used the solidworks s/w for rendering the Sub surface.KrishG wrote:Based on Sandeep Unninathan's/Shiv Aroor's drawings of Arihant, I have come up with a new 3d-model. I'm still working on it. I'll post the basic hull shape of this design.
