It is highly praised for its technical brilliance and for showcasing a lesser-known chapter of Indian naval history. You can read more about the historical context on Wikipedia . Where to Watch Legally
If you are simply asking what "Isaidub" means in this context, it refers to a piracy release group that leaks Tamil, Telugu, Hindi, and dubbed movies. I strongly advise against using it. Ghazi Attack Isaidub
The Indian destroyers continued to pursue the Ghazi, with the INS Khanderi dropping a series of depth charges that straddled the submarine's suspected position. The Ghazi, which was badly damaged by the explosions, began to lose buoyancy and eventually sank to the bottom of the sea at around 2:30 am on December 14. It is highly praised for its technical brilliance
The PNS Ghazi was dispatched from Karachi to the Bay of Bengal with the objective of destroying India's aircraft carrier, INS Vikrant , and mining the Visakhapatnam harbor. I strongly advise against using it
The Ghazi Attack (titled Ghazi in Telugu) is a historical war thriller inspired by the actual sinking of the Pakistani submarine PNS Ghazi during the Indo-Pakistani War of 1971. It is noted as India's first underwater war film. Taapsee Pannu
Often hosts the Telugu, Hindi, and Tamil versions. Check availability on Amazon Prime Video.
On the night of December 4, 1971, a massive underwater explosion rocked the coast of Visakhapatnam. The Ghazi had sunk with all 92 men on board. However, how it sank remains a point of intense historical debate: