The American brigantine Mary Celeste was found apparently abandoned under circumstances that remain unknown.

A brigantine is a two-masted sailing vessel with a fully square-rigged foremast and at least two sails on the main mast: a square topsail and a gaff sail mainsail. The main mast is the second and taller of the two masts.

Mary Celeste was a Canadian-built, American-registered merchant brigantine that was discovered adrift and deserted in the Atlantic Ocean off the Azores on December 4, 1872. The Canadian brigantine Dei Gratia found her in a dishevelled but seaworthy condition under partial sail and with her lifeboat missing. The last entry in her log was dated ten days earlier. She had left New York City for Genoa on November 7 and was still amply provisioned when found. Her cargo of alcohol was intact, and the captain's and crew's personal belongings were undisturbed. None of those who had been on board were ever seen or heard from again.