While India suffered no losses, Pakistani fleet tanker PNS Dacca was damaged beyond repair, and the Kemari Oil Storage facility was lost.

On 3 December, after Pakistan attacked Indian airfields along the border, the Indo-Pakistani War of 1971 officially began.

However these had limited operational and radar range and to overcome this difficulty, it was decided to assign support vessels to the group.

While India suffered no losses, Pakistan lost one minesweeper, one destroyer, a cargo vessel carrying ammunition, and fuel storage tanks in Karachi.

The Indian Navy had anticipated this attack and had already moved the missile boats to other locations to prevent any losses.

Furthermore, the Indians mistook tracer fire from the coastal artillery of Karachi as originating from Pakistani aircraft and retreated hurriedly before they could properly target the tanks.

The Indian Navy's official historian, Vice Admiral Hiranandani in his book Transition to Triumph, mentioned that while the group approached Karachi, Trishul's electronic surveillance revealed that the radar there had stopped rotating and was directed straight at the group, confirming that it had been detected.

Vinash immediately fired all four of its missiles, the first of which struck the fuel tanks at the Kemari Oil Farm causing a heavy explosion.

The third and fourth missiles hit the Pakistani Navy fleet tanker PNS Dacca and the British merchant ship SS Harmattan.

[12] With no casualties observed on the Indian side, both missile attacks (Trident and Python) led the Pakistan Navy to take extreme measures to prevent any further damage.

The rescue efforts were immediately coordinated by Rear Admiral Patrick Simpson who kept morale high among the Pakistani Navy officers.