Which British shipping line has a full title incorporating Boston Packers, and operated the SS Justicia?
SS Justicia SS "Justicia was a British troopship sunk during the First World War. She was laid down as SS "Statendam, a 32,234 gross-ton ocean liner built for the Holland America Line by Harland and Wolff in Belfast. Before the ship was completed she was acquired by the British government and operated on behalf of the shipping controller by the White Star Line.
SS Crown Arun Crown Arun was a  GRT cargo ship which was built by Actien-Gesellschaft „Neptun“ Schiffswerft und Maschinenfabrik, Rostock as Hannah Böge. She was captured at sea on 3 September 1939 and declared a war prize. Taken into service by the British Government, "Crown Arun" was torpedoed and sunk by "U-99" on 17 September 1940.