Complex sentence: In 1915, she was seized as a prize of war by the British and used as a Q-Ship during World War I. After the war, she worked as a coal, produce and stone carrying vessel between Liverpool and Scottish ports.
Split into simpler sentences: In 1915, she was seized as a prize of war by the British and used as a Q-Ship during WWI. At the end of WWI, she worked as a coal, produce and stone carrying vessel between Liverpool and Scottish Ports.