In early December 1971, the Pakistan Navy sent the "Hangor" submarine out of the heavily blocked karachi port to detect the enemy situation near the Indian port of Diu, and in the early morning of the 3rd, the "Hangol" submarine found an Indian fleet out of the port of Diu, so the submarine commander immediately reported this important information to the headquarters.
However, the Indian monitoring station soon intercepted the secret telegram and concluded that there was a submarine under the water monitoring the every move in the port of Diu, so the Indian Navy hastily dispatched two frigates (Kilpan and Kukali) and several anti-submarine aircraft to surround and attack the "Hangol" submarine. However, after several days of searching, the Indian Navy has never found the exact location of the Pakistani submarine.
It was not until December 9 that the "Hangol" submarine, which was supposed to be the "mouse", decided to oppose the passengers and take the two frigates to open the knife. A torpedo was then fired at the Kilpan, but the torpedo did not hit its target, and the panicked Kilpan had to frantically evade and throw depth charges.
Seeing that the "Hangol" submarine was exposed, the nearby "Kukari" came to the submarine at full speed to prepare to launch an attack, but the oncoming torpedo directly broke the keel of the "Kukari", and sank to the bottom of the sea with all the crew in less than two minutes. The Kilpan saw that the situation was not right, and while maneuvering to the site of the shipwreck to rescue the fallen crew, it frantically threw depth charges. The calm "Hangol" submarine seized the opportunity and wounded the Kilpan with another torpedo.
Subsequently, the "Hangur" submarine, which was received at the sight of a good one, decided to return immediately, and the first example of a submarine sinking a warship after World War II was born. When the Indians learned that the Kukari had been sunk in their own waters, they sent almost all the anti-potential to contain the Hängol submarine, including anti-submarine aircraft, reconnaissance patrol aircraft, and anti-submarine ships.
Since the submarine belongs to the diesel-electric submarine, it must be floated and charged every distance traveled, so the "Hangol" was repeatedly found and chased by the Indians on the way back, until December 18, it was chased by India for several days, and the "Hangol", which was only slightly injured after dropping 156 depth charges, successfully returned to the base.
I have to say that the calmness and combat quality shown by the "Hangor" submarine in this battle are exemplary! But although the "Hangol" submarine worked miracles. However, in the Third Indo-Pakistani War, the Indian Navy still occupied an absolute advantage and stubbornly blocked the Pakistani Navy in the port of Karachi. But because of this, it can set off the miracle created by the "Hangol"!
