Footage from NATO shows a decommissioned frigate sinking after one of its submarines hit it with a torpedo during an exercise. | CNN

The real story of the Titanic is that it was a luxurious British ocean liner that sank on its maiden voyage on April 14-15, 1912, after hitting an iceberg in the North Atlantic. The disaster resulted in the deaths of about 1,500 people out of approximately 2,224 passengers and crew aboard. The ship's sinking was caused by a collision with an iceberg despite receiving several ice warnings, and it led to major changes in maritime safety regulations. This video explains the real reasons the Titanic