The procurement will come at a cost of Rs 38,900 crore.
This would provide a major boost to the indigenous design and construction capability of submarines in India.
Unlike conventional subs that must surface every 48 to 72 hours, these subs can stay submerged for up to 14 days.
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.
The 'request for proposal' for the indigenous construction of the six submarines will be issued soon, they added.
The defence ministry has started fresh cost negotiations with the US firm Sikorsky for purchase of 16 multi-role naval helicopters, Lok Sabha was told on Friday.
The proposals will help in the modernisation of the armed forces.
The cost of the project will be Rs 21,738 crore, the sources said.
The total cost for procurement of 41,000 LMGs will be Rs 3,000 crore while over 3.5 lakh Close Quarter Battle Carbines will be bought at a cost of Rs 4,607 crore respectively, defence ministry officials said.
The approval to the proposals come amid increasing hostilities by Pakistan along the Line of Control in Jammu and Kashmir as well as China's aggressive posturing in several sectors along the nearly 4,000-km-long Sino-India border.
The long-pending proposals were cleared at a meeting of the Defence Acquisition Council (DAC), the defence ministry's highest decision making body on procurement.
The elephant in the room will permeate the conversations, predicts Rup Narayan Das.
Another proposal of the army and the IAF for the procurement of 55 low level light weight radars was also cleared by the DAC for Rs 419 crore.
The CDS will have a significant role in higher defence planning and operational aspects of India's nuclear arsenal.
Russia has made a new offer on the delivery of Sukhoi T-50 (PAK FA) fighter jets to India under the joint FGFA initiative.
The biggest procurement green-lighted was the Rs 217 billion purchase of 111 naval utility helicopters.
The utility helicopters will be used in attack missions as well as for search and rescue and surveillance operations.
According to official figures, 14 squadrons of the MiG 21, MiG 27 and MiG 29 are due for retirement in the next 10 years which will bring down the fighter squadron strength to 19 by 2027 from the current 33.
New Delhi sought a sovereign guarantee to prevent Paris from ever citing the Arms Trade Treaty to interrupt, modify or cease delivery of the Rafale fighter at any stage.
Gen Rawat will be able to serve as CDS for a period of up to three years after the government amended the rules extending the age of retirement to 65 years.
In an off-shoot of VVIP helicopter deal scam, the Central Bureau of Investigation has registered a case against a Brigadier attached to Army Aviation for allegedly fudging trial flight records of the copters.
His absence will be felt because of his decision taking ability and rapport with armed forces.
Aircraft carrier INS Vikramaditya will not have any air defence systems on board to protect itself from aerial attacks while coming home from Russia and the Navy has sent warships to escort it safely.
The Defence Acquisition Council on Wednesday approved proposals worth Rs 4,444 crore, including the purchase of four helicopters for survey vessels at Rs 2,324 crore, but deferred a decision on a joint bid of Tata Sons Ltd and Airbus for replacing IAF's Avro transport fleet.
United States manufacturer Sikorsky has bagged a Rs 6,000-crore contract for supplying 16 multi-role helicopters to the Indian Navy.
United States manufacturer Sikorsky has bagged a Rs 6,000-crore contract for supplying 16 multi-role helicopters to the Indian Navy.
"How many more lies will be peddled to sustain a sinking dynast? India, certainly deserves better," Jaitley said.
The CDS will be a four-star general and his salary will be equivalent to that of service chiefs.
India-China relations have always attracted Parliament's attention and there have always been useful and productive and constructive discussions how to engage with China, notes Rup Narayan Das.
The new policy would also allow many of the stuck programmes, like the heavy weight torpedos for the six Scorpene submarines, to move ahead with clarity.
The BrahMos systems for the two ships are estimated to cost Rs 25 billion, making it the world's most expensive anti-ship missile.
The document titled 'Details of the steps in the decision making process leading to the award of 36 Rafale fighter aircraft order' stated that the process as laid down in the Defence Procurement Procedure-2013 has been followed in procurement of the Rafale aircraft.
Seen as a major initiative, the 'strategic partnership model' aims to create a vibrant defence manufacturing ecosystem in the country through involvement of both the major Indian corporates as well as the MSME sector.
India to go ahead with S-400 missile deal with Russia, but declines project to develop a fifth-generation fighter aircraft.
She would also have a separate meeting with the defence secretary every day.
The defence ministry has scrapped the Rs 2,700 crore deal for acquiring two minesweeper vehicles from a South Korean firm after it was found that there were violations of tender conditions as agents were in the play.
'The government must provide more funds to enable the armed forces to fight and win tomorrow's wars,' states Brigadier Gurmeet Kanwal (retd).
Rahul targets the Modi government on Twitter, using the hashtag "BikGayaChowkidar".
Coming down hard on the government for meagre increase in allocation for armed forces in the last few years, the Parliamentary Standing Committee on Defence said the outlay cannot even fulfill the basic requirements of the armed forces.
'No sovereign guarantee, no bank guarantee, no escrow account, yet a huge amount was paid as advance'