Pakistan is planning of buying six more submarines with options for joint development of future submarines with China. The reason for that is, because Pakistan is seeking for ways to strengthen its under-sea warfare capabilities.
For now it is unknown what the class of the submarines is, but according to anonymous information Islamabad required an advanced under-sea vessel with air independent propulsion (AIP) system. This system will give the submarine the capability of staying submerged for longer and operating noiselessly.
The Co-development will not only include projecting and manufacturing, but also training of Pakistani personnel, upgrades of Pakistan Navy’s shipyard and other things. At the moment Pakistan is finalizing a deal of inducting 36 J-10 fighter aircraft from China in a deal which has an estimated worth of over USD 1.4 billion. Islamabad and Beijing are also collaborating to build an advanced fighter — JF-17 or ‘Thunder’.