Letters to UFO author Morris Jessup claim the Navy made a warship invisible in 1943. The Navy says no such experiment ever happened.
Contested history
Consensus: Claims that the Navy made the destroyer escort USS Eldridge invisible or teleported it in 1943 first surfaced in letters to Morris Jessup in 1956.
Grew out of real degaussing and radar workEstablished
The Navy says routine wartime tests to make ships invisible to magnetic mines may have been distorted into the legend.
The Navy made a ship invisible or teleported itDebunked
The Office of Naval Research says no such experiment took place, and the Eldridge's log places it elsewhere at the claimed time.
The source letters were written by one manEstablished
The Allende letters were traced to Carl Allen, who later gave conflicting accounts of his story.