This is the first time in decades that China has made its flight test of an intercontinental ballistic missile public in an apparent show of strategic deterrence, State-run China Daily reported.
Unlike conventional subs that must surface every 48 to 72 hours, these subs can stay submerged for up to 14 days.
Kalvari is expected to enter service by September end.
The Navy Chief issued directions to make INS Brahmaputra seaworthy and combat ready.
MH-60 Romeo Seahawks would add lethal capabilities of the Indian Navy, which experts say is the need of the hour given the aggressive behaviour of China in the Indian Ocean region.
The defence ministry has already shortlisted two Indian shipyards and five foreign defence majors for the project, being billed as one of biggest "Make in India" ventures.
Calling for a rethink of its submarine building programme, Defence Minister Manohar Parrikar on Tuesday said India should look for greater numbers than the existing plan of constructing 24 such vessels.
INS Khanderi, the second Scorpene-class submarine that can attack with torpedoes as well as tube-launched anti-ship missiles whilst underwater or on surface, was launched at the Mazgaon Dock Shipbuilders Ltd in Mumbai in January 2017.
MH-60 Romeo Seahawks would add lethal capabilities of the Indian Navy, which experts say is the need of the hour given the aggressive behavior of China in the Indian Ocean region.
Kalvari underwent around 120 days of extensive sea trials and tests for various equipment and is expected to bolster India's maritime prowess.
Pakistan will acquire at least eight modified diesel-electric attack submarines from China by 2028 in a nearly $5 billion (Rs 33,479 crore) agreement, said to be the biggest arms export deal for the Communist giant.
Three women have become the first female submariners in the 110-year history of United Kingdom's Submarine Service, 24 years after the Royal Navy first allowed women to go to sea.
The image showed that the footage was made at 2035 hours on March 4.
The major advantages of such plants are no need of land to build the reactors, earthquake resistant, abundance of water for active or passive cooling.
The leaked documents include details of submarine's underwater sensors, above-water sensors, combat management system, torpedo launch system and specifications, communications system and navigation systems.
Defence Minister Arun Jaitley on Wednesday reviewed the progress of 'Project 75' (indigenous submarine construction project) along with other ongoing warship projects, including P-15 B class stealth destroyers in Mumbai.
A yet-to-be-released US Department of Defence report has found that the Indian Navy's expensive new Boeing P-8I multi-mission maritime aircraft ineffective at surveillance and detection and destruction of submarines.
A yet-to-be-released US Department of Defence report has found that the Indian Navy's expensive new Boeing P-8I multi-mission maritime aircraft ineffective at surveillance and detection and destruction of submarines.
China's PLA Navy has deployed a number of platforms including frontline warships and a submarine for the exercise from November 11 to 17.
No casualties were reported in the incident which occurred on Sunday evening.
A look at some of the incidents involving submarines around the world in recent times
The second SSN that India is negotiating to lease from Russia will only replace the Chakra, when its 10-year lease expires, reports Ajai Shukla.
The development marks a major milestone in Indian Navy's submarine programme as the vessel is expected to bolster India's maritime prowess
The Pakistan Navy claimed in Islamabad that it used specialised skills to ward off the Indian submarine from entering Pakistani waters.
The missile, developed by the DRDO, has a range of 3,500 km and it will be able to bring almost all parts of Pakistan and several areas of China within its reach, officials said.
The defence ministry also cleared the project, to acquire 5,000 Milan 2T anti-tank guided missiles for the Army.
Issuing a statement after disembarking from the submarine, Kalam said he was convinced that the submarines force could shoulder ''much higher technical and professional challenges''.
All the six diesel-electric attack submarines will be equipped with the anti-ship missile, which has a proven record in combat, the defence ministry said.
The submarine vanished without a trace around Janaury 2, 1943 and is believed was hit by a mine in the Gulf of Olbia.
This would provide a major boost to the indigenous design and construction capability of submarines in India.
Saying it was not a worry, the Indian Navy said they were monitoring all such activities.
According to Russian journal Vedomosti, the agreement was made when Prime Minister Narendra Modi met Russian President Vladimir Putin in Goa BRICS summit.
Indian Navy Chief Admiral R K Dhowan enumerated a three-pronged strategy to counter the country's minified submarine fleet.
The first of six French-designed Scorpene submarines which are being manufactured in Mumbai, was launched into the water on Monday, initiating the process for extensive sea trials.
An agreement was reached in Islamabad during a meeting between Pakistan Finance Minister Ishaq Dar and Xu Ziqin, President of state-owned China Shipbuilding & Offshore International Company Limited -- the trade arm of China Shipbuilding Industry Corporation.
It's intriguing that the prime minister now wants his American partner to help protect the Hindu minority in Bangladesh. That's conceding to the Americans a pre-eminence India has always contested, resented and feared, asserts Shekhar Gupta.
INS Vagir set a new record for the longest-ever deployment of any Scorpene-class submarine, covering a distance of 7,000 kilometres to reach Australia for joint military exercises.
The first of a four-part special series on the country's critical, yet significantly delayed, submarine development programme.
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