SS Deutschland was a 21,046 gross registered ton (GRT) German HAPAG ocean liner which was sunk in a British air attack in 1945, with great loss of life. One of a group of four ships that included the SS Albert Ballin, SS Hamburg, and SS New York, the Deutschland was launched on 28 April 1923. She began her maiden voyage on 27 March 1924, to Southampton and then on to New York City. The ship had tremendous problems with vibration, becoming known as the "Cocktail Shaker"; she was re-engined in 1929, with service speed reduced to 19 knots.