The Marie Celeste, a ghost ship that was found floating in the Atlantic with no sign of passengers or crewmembers. What happened to them is still a mystery to this day. 

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Ouch! Was That a Ghost? (ouchwasthataghost.com)


Citations
https://www.kingmanyachtcenter.com/an-october-ghost-story-mary-celeste/#:~:text=With%20no%20clear%20explanation%2C%20the,of%20an%20attempted%20insur
Solved: The Mystery of the Mary Celeste | UCL News - UCL – University College Londonhttps://www.britannica.com/topic/Mary-Celeste
https://www.smithsonianmag.com/history/abandoned-ship-the-mary-celeste-174488104/
The Enduring Mystery of the Ghost Ship Mary Celeste - History Tools