INS Arihant: News & Discussion

[SSridhar]

Hope & pray it was a K4. Was there a NOTAM/NAVAREA?

[ramana]

was it K4 or K5?

There was a report of a NOTAM for an experimental missile scheduled a couple of weeks ago.

viewtopic.php?p=2563508#p2563508

People asked if it had happened.
Most likely the experimental missile part is on the regular missile flown.
So I would think it's a K4.

[ramana]

Important article by Atul Aneja

https://t.co/XZh0gLOvLH

Glad he quit The Hindu

[Ankit Desai]

Hope & pray it was a K4. Was there a NOTAM/NAVAREA?

It was K15. K4 test is going to be soon, NOTAM is out.

-Ankit

[Thakur_B]

Looks like K4, not K15.

[nevin]

Thats Yuri Dolgoruky launching 4 Bulavas back in 2018. Not K4 or anything

[chetak]

Looks like K4, not K15.

that is a stock image, mostly used as a filler.

The actual footage/images of the Arihant launch will not come out so quickly.

[Ankit Desai]

https://twitter.com/ShivAroor/status/15 ... 9194772480 ---> Pretty sure the Indian nuke-capable missile launched from nuclear submarine INS Arihant today was a 750-km range K-15 Sagarika. The real big momma, the 4,000 km range K-4, is likely to be tested in the next couple of days.

https://twitter.com/sneheshphilip/statu ... 0612328448 ---> @sneheshphilip - India gets set for possible test of K-4 SLBM.

-Ankit

[SSridhar]

^ Waiting for it. So, they had a mix of K-15s & K-4s in their tubes when they left Vizag.

[Haridas]

https://twitter.com/ShivAroor/status/15 ... 9194772480 ---> Pretty sure the Indian nuke-capable missile launched from nuclear submarine INS Arihant today was a 750-km range K-15 Sagarika. The real big momma, the 4,000 km range K-4, is likely to be tested in the next couple of days.

https://twitter.com/sneheshphilip/statu ... 0612328448 ---> @sneheshphilip - India gets set for possible test of K-4 SLBM.

-Ankit

Does K-15 Sagarika always fly Hypersonic cruise trajectory to yield 750-km range?

Can it not fly Ballistic?

Or both Ballistic and hypersonic glide (on re entry)?

http://www.indiandefencereview.com/spot ... deterrent/

[Haridas]

See slide 14 of this to get a sense of K15

https://www.slideshare.net/ramana_56/bg ... -c-9600008

[SSridhar]

India's submarine fleet to get booster dose early next year

On the SSBN (nuclear-propelled submarines armed with nuclear-tipped ballistic missiles) front, the 6,000-tonne INS Arighat is also slated to be commissioned within the next few months.

When she joins INS Arihant, she will add some teeth to India's strategic deterrence posture by strengthening the country's weakest leg of the nuclear triad. Under the Rs 90,000 crore advanced technology vessel (ATV) project, two more 7,000-tonne SSBNs (currently called S-4 and S-4*) are under construction, with one of them being "launched into water" last year.

As of now, India however has just one operational SSBN in INS Arihant, armed only with short-range 750-km B-O5 or K-15 missiles.

[Ankit Desai]

-Ankit

[Rakesh]

Cleaned out the thread of recent posts and split the discussion into two separate threads:

1) Indian Nuclear Submarines ---> viewtopic.php?f=3&t=7110&start=1840

2) Indigenous Aircraft Carrier (IAC 2): News & Discussion ---> viewtopic.php?f=3&t=7902

[Rakesh]

https://twitter.com/Anshsin93355338/sta ... 39106?s=20 ---> INS Arihant diving/helmsman station.

[disha]

^ I am disappointed that the Arihant diving/helmsman station is looking all TFTA as in a western submarine and not at all SDRE with very long dark narrow corridors.

---

I do not think people on twitter understand the importance & implication of that single photo above (of the helmsman station).

This is the first photo of an helmsman station of any boomer (SSBN) in Asia and outside of the select few countries (US/UK/Fr/Russia).

And that helmsman station really looks TFTA.

[Mukesh.Kumar]

Sorry Dishaji, I am disappointed. The valves look like they were coming out of a Sintex tank.

^ I am disappointed that the Arihant diving/helmsman station is looking all TFTA as in a western submarine and not at all SDRE with very long dark narrow corridors.

---

[Rakesh]

https://x.com/VivekSi85847001/status/17 ... 18903?s=20 ---> The Silent Indian Democracy. Beautiful model of India's doomsday creator "INS Arighat" nuclear powered, nuclear ballistic missile submarine. It belongs to one of India's most secret projects ever. The Indian Navy has two such submarines in service & two more bigger in the making.

[Rakesh]

https://x.com/nssdatta/status/1754146438122983700?s=20 ---> Arihant Class nuclear powered, ballistic missile submarine. Very few pictures are in public.

[JTull]

All these pictures have been in circulation for years. Can you please add them to the first post in the thread?

[Rakesh]

All these pictures have been in circulation for years. Can you please add them to the first post in the thread?

Done Saar. Please check.

[JTull]

Cheers

[Rakesh]

https://x.com/GODOFPARADOXES/status/176 ... 69812?s=20 ---> Interesting SSBN models.

1. Cross-shape rudder/planes (center model has end plates on stabilizers)
2. Sail planes
3. Streamlined sail
4. Superstructure with higher % of blending
5. Silos (IMO 12) because aft will also have the reactor & machinery room
6. Bladed prop (center model)

[Suraj]

Google Earth shows two boats at Vizag. Presumably one of them - the partially covered and likely longer - is Aridhaman while either of Arihant and Arighat are out on patrol.

[Nikhil_Naya]

My eyes playing games with me - but Google is showing 3 boats now...Length varies...got screenshots but will wait for the experts..

[Ankit Desai]

Google Earth shows two boats at Vizag. Presumably one of them - the partially covered and likely longer - is Aridhaman while either of Arihant and Arighat are out on patrol.

My eyes playing games with me - but Google is showing 3 boats now...Length varies...got screenshots but will wait for the experts..

-Ankit

[Suraj]

Right, it appears all three are visible now. What a sight.

[Ankit Desai]

Deep Dive On India's Nuclear Submarines



Question: Where is SSN ?
Shiv Aroor: " .... what I can tell you for sure is that, the work has begun. The engineering team, the design team etc. have been moving in full speed since the project sectioned few years ago. And... the things are moving."

-Ankit

[wig]

https://www.janes.com/defence-news/news ... nd-of-2024

India to commission second nuclear submarine by end of 2024
excerpted

India's second nuclear-powered ballistic missile submarine (SSBN) will be commissioned in the next few months, Janes understands.

The vessel, which will be in service as INS Arighat once commissioned by end 2024, is going to be formally inducted almost seven years after it was launched.

According to Janes data, Arighat was launched in Visakhapatnam in November 2017. It has a length of 111.6 m, beam of 11 m, draught of 9.5 m, and a displacement of 6,000 tonnes.

Arighat is one of three SSBNs that have been launched by India. First-of-class INS Arihant was launched in July 2009 and commissioned in August 2016, while a third yet-to-be-named vessel was launched in November 2021.

weapons and build

Four large vertical launch system (VLS) tubes in the submarine carry these Sagarika SLBMs. Sagarika is a hybrid propulsion, two‐stage, solid‐propellant missile. The first stage lifts the missile to an altitude of about 4 km. The missile has a range of more than 700 km.

Arighat is built with Russian steel equivalent to US HY-80 grade. The submarine is divided into seven compartments, with main divisions for the propulsion and combat management systems, platform management centre, and the torpedo room.

Arighat also features a double hull, encompassing ballast tanks, two standby auxiliary engines, and a retractable thruster for emergency power and mobility.

[Rakesh]

India 'fully ready' to add to fleet 2nd submarine with nuclear-tipped missiles
https://timesofindia.indiatimes.com/ind ... 433199.cms
11 August 2024

[Rakesh]

Scale model of the Arihant Class (Arighaat pictured below)...

https://x.com/Rethik_D/status/1704872499815813488 --->



https://x.com/ang3lkenny/status/1822542235503558676 --->

[S_Madhukar]

Now is a time to do a video of SLBM test off a certain island off the Arakan coast. But won’t happen.

[Rakesh]

I believe there was one, unless I am mistaken.

[wig]

https://www.msn.com/en-in/news/India/in ... 0d3b&ei=20

INS Arighat, India's Second Nuclear Submarine, Likely To Be Commissioned On Thursday

extracts

The Indian Navy is likely to commission its second nuclear submarine INS Arighat on Thursday.

future

India is working on having five Arihant class boats along with the six nuclear attack submarines to be built in three blocks.

[Rakesh]

https://x.com/Defencematrix1/status/1828727185869324359 ----> According to ANI, India is working on 5 Arihant class submarines, earlier it was known to be four.

- Arihant (S2)
- Arighat (S3)
- Aridhaman (S4)
- S4*

Fifth could be another S4 or another improvement due to the delays in developing Next Gen SSBNs (S5). 5th Arihant is likely to keep the line running, all the other submarines are under construction.

"Six nuclear attack submarines to be built in three blocks" Successive improvements in each block. The construction of each block will be separated over a few years to test and amend the flaws found in the previous blocks.

Input By: Adm_Kenobi

[wig]

https://www.msn.com/en-in/news/India/ra ... da81&ei=32

Rajnath Singh to commission second nuclear-powered ballistic missile submarine 'Arighat'

some more details of INS Arighat

Arighat is the first-of-class INS Arihant which was launched in July 2009. It was commissioned in August 2016. The third one was launched in November 2021 but has not been named yet.

Built at Visakhapatnam-based Ship Building Centre (SBC), the Arighat has a length of 111.6 m, beam of 11 m, draught of 9.5 m, and a displacement of 6,000 tonnes. The submarine will have a top speed of 24 kt, and a surfaced speed of 10 kt.

Like INS Arihant, the Arighat is also having four launch tubes in its hump and can carry up to four nuclear-capable K-4 Submarine Launched Ballistic Missiles (SLBMs) with a range of 3,500 kilometers. It can also be equipped with 12 K-15 SLBMs, which can be carried up to 750Kms.

[Lisa]

https://x.com/Defencematrix1/status/1828727185869324359 ----> According to ANI, India is working on 5 Arihant class submarines, earlier it was known to be four.

Does anyone have an opinion on image in above post. Personally think it is a Delta.

[Pratyush]

Nope, it's a photoshopped Borei-class submarine.

Borei-class submarine

They have added hydroplanes to the Sail in the photo shopped image.

[Lisa]

http://www.hisutton.com/BS-64_Podmoskovye.html

[SSridhar]

In big step towards nuke triad, India set to commission 2nd nuclear-sub today - Rajat Pandit - ToI

India will commission its second nuclear-powered submarine with nuclear-tipped ballistic missiles as INS Arighat on Thursday, in a major step towards further strengthening its strategic deterrence capabilities.

The commissioning of the almost 112-metre-long submarine, armed with K-15 missiles that have a strike range of 750-km, will take place at the secretive ship-building centre in Visakhapatnam in the presence of defence minister Rajnath Singh and top national security and military officials.

TOI was the first to report on Aug 11 that INS Arighat's commissioning was now imminent after the 6,000-tonne boat became "fully ready" following protracted extensive trials and technological upgrades.

"While INS Arighat is of the same size, length and displacement as INS Arihant, she can carry more K-15 missiles. The new boat is much more capable, efficient and stealthy," a source said.

The real punch in India's deterrence capabilities will come when the third SSBN (naval parlance for nuclear-propelled submarines with nuclear-tipped ballistic missiles), a slightly larger 7,000-tonne vessel, is commissioned next year. To be called INS Aridhaman, she will carry K-4 missiles that can hit targets 3,500-km away.

A fourth SSBN is also being constructed under the classified Rs 90,000 crore advanced technology vessel (ATV) project to bolster the country's weak sea-based leg of the nuclear triad.