The incident was captured by a television crew filming a documentary on board HMS Northumberland.
A Russian submarine collided with a Royal Navy warship's sonar on patrol in the North Atlantic, the Ministry of Defence has confirmed.
HMS Northumberland had been tracking the submarine when it hit the ship's sonar equipment being trailed hundreds of metres behind it.
The incident, in late 2020, was captured by a television crew filming a documentary.
A UK defence source said it was unlikely the collision was deliberate