I see Dr Beachcombing has quoted parapsychologist Harry Price (1881-1948) on the preferred environment of poltergeists. I recognized the quote from one of my favourite books from my youth, Poltergeist Over England, and could add a bit more. Price said that he had never heard of a poltergeist infesting a ship (and neither have I). I dare say he never heard of one infesting a goods train either, but it happened just two years after his death.
