[Photo: CRI Online]

1. Mary Celeste

The Mary Celeste was a brigantine merchant ship notably discovered in December 1872 in the Atlantic Ocean unmanned and apparently abandoned.

She was in seaworthy condition and still under sail heading towards the Strait of Gibraltar.

She had been at sea for a month and had over six months' worth of food and water on board.

Her cargo was virtually untouched and the personal belongings of passengers and crew were still in place, including valuables.

But the crew was never seen or heard from again. Their disappearance is often cited as the greatest maritime mystery of all time.