In 1872, a ship was sailing on the Atlantic Ocean. It was called the Dei Gratia (dei GRAH-see-yuh). Something strange happened when it was off the coast of Portugal, a country in Europe. A crew member spotted a vessel with torn sails drifting in the distance.
The crew went to take a closer look. The small ship was called the Mary Celeste. The cabin doors swung open and shut like doors in a haunted house. The ship creaked as it rocked upon the waves.
The men had discovered what sailors call a ghost ship. All 10 people who had been on board the Mary Celeste were gone!