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During World War II pets were allowed aboard British war ships and Blackie was the HMS Prince of Wales's ship's pet cat. . In August 1941 he became famous after the ship carried Prime Minister Winston Churchill across the Atlantic to Canada where he net Franklin D. Roosevelt to agree on the Atlantic Charter.
After the declaration of the Charter, as Churchill prepared to depart from the ship, Blackie approached him at the gangway and bid Prime Minister Churchill farewell. In honor of that moment Blackie was renamed Churchill.
Later Blackie survived the sinking of Prince of Wales by the Imperial Japanese Naval Air Service later that year, and was rescued and taken to Singapore with the other survivors
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