What Merchanht ships were declared as "protected" in WWII for the transferred of Prisoners of War, between warring nations

  • 2
    Are you asking what types of ship were used or are you asking for actual, named examples of the ships that were used?
    – Steve Bird
    Commented May 15, 2016 at 8:13
  • What evidence have you found to support the notion that ANY such ships existed. Submarines don't stop and ask for identification papers before firing torpedoes. Commented May 16, 2016 at 0:14

1 Answer 1


There is a book "Mercy Ships: The Untold Story of Prisoner-of-War Exchanges in World War II" which covers this topic.

The two principal ships used were Swedish: Drottningholm and the Gripsholm.

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These ships were also used to exchange civilian internees. The total amounts of people exchanged amounted to a few 10s of thousands. In the case of soldiers, it was mostly sick or disabled soldiers that were exchanged.

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