Carl Meredith Allen (1925–1994)[1] was an American merchant mariner who claimed that during World War II he witnessed the "Philadelphia Experiment", a supposed paranormal event where the United States Navy made a ship invisible and accidentally teleported it through space.
Right after that he enlisted in the United States Merchant Marine, at first serving on the SS Andrew Furuseth and then many other ships until 1952 when he left service.
It contained a copy of Morris K. Jessup's book The Case for the UFO: Unidentified Flying Objects that was filled with handwritten notes in its margins, written with three different shades of blue ink, appearing to detail a debate among three individuals.
They discussed ideas about the propulsion for flying saucers, alien races, and express concern that Jessup was too close to discovering their technology.
In Allen's account, a destroyer escort was successfully made invisible, but the ship inexplicably teleported to Norfolk, Virginia for several minutes, and then reappeared in the Philadelphia yard.