I’d always heard it called the Marie Celeste.
Writers began calling the ghost ship Mary Celeste the “Marie Celeste” to add to its air of mystery.
One theory had it that there were unstable explosives in the cargo & the captain put everyone & himself in the longboat & tied it to the stern of the ship which was rigged to proceed under sail. The line snapped, the longboat was cut adrift & disappeared, and the Mary Celeste continued to proceed until discovered & boarded.