In mid-April 2015, Deep Ocean Search recovered the cargo from a British steamboat City of Cairo, off the Namibian coast at the depth of 5,150 metres.

According to the French Figaro, the City of Cairo was sunk during WWII, and its cargo included wool, cast iron, and crates housing silver coins, whose total value is estimated at 50 million dollars.

Company Deep Ocean Search, whose team of experts is made up of French and UK oceanographers, invested immense efforts in finding this hidden treasure.

And in order to find it, they even built a sonar device that enables exploring oceans at depths of up to as much as 6,000 metres.

The expert team was thrilled by the outcome of the marine salvage operation and created a Facebook page where it posted accounts of their search.

According to British law, treasure hunters have the right to keep the recovered valuables if the salvage vessel is of the British Royal Navy.