ll of us have questioned "Why are Bangladesh buying a Class Submarine for Ian Class Submarine?"

All of us have questioned "Why are Bangladesh buying a Class Submarine for Ian Class Submarine?"
We also did the same question to a senior naval officer. In response to this, he said, "Type-039A or Ian Class submarine service comes in 2006. And it is still under construction. Therefore, it is not possible to get as second hand submarine right now. Bangladesh is buying JC Class submarine Made in 1998-2000. Now the production line of these submarines is closed. Besides, there is a modern submarine for China. If China sells them, China's problem is not going to happen. "
Type-039 Song Class Submarine not AIP system (Air Independent Propulsion) is missing. Where Type-039A or Yuan Class submarine has AIP system.
The advantage of having AIP system is that the submarine is able to stay under water for a long time. The AIP system is capable of producing oxygen through chemical reactions inside the submarine. Consequently, the submarine could be under water for a long time without taking oxygen on the surface of the Earth.
However, the Type-039 Song Class submarine will be upgraded to Bangladesh. It may also be installed in the AIP system. Besides, a rubber pad will be fitted on it to reduce the noise of submarines. As a result, a lot of noise will be generated. Thus, the gold system can not be easily detectable.
And our neighboring grandmother's joker will often see the Chinese submarine in despair. They think that there is no bad submarine like a Chinese submarine. Buy today for us will present a true story of Type-039 Song Class submarine-
USS Kitty Hawk, a US aircraft carrier that was patrolling Japan and Taiwan in the South China Sea on October 26, 2006. At that time, a Song Class submarine from China reached 9 km of the aircraft carrier that was inside the Tornado Range of the Sam class. The submarine came up aggressively. An F / A-18 Hornet sees it and sends it. Next, the US Navy's EA-6B aircraft also confirmed this news.
At that time, the United States did not even detect the old classical class. If the submarine did not prop up, then it could have been more close.
So I think the Bangladesh Type-039 Song Class submarine did not make any wrong decision.