Hitler and Ley were aware that the suppression of the trade unions and the prevention of wage increases by the Trustees of Labour system, when coupled with their relentless demands for increased productivity to hasten German rearmament, created a real risk of working-class discontent. In November 1933, as a means of preventing labour disaffection, the DAF established Strength Through Joy ("Kraft durch Freude", KdF), to provide a range of benefits and amenities to the German working class and their families. These included subsidised holidays both at resorts across Germany and in "safe" countries abroad (particularly Italy). Two of the world's first purpose-built cruise-liners, the "Wilhelm Gustloff" and the "Robert Ley", were built to take KdF members on Mediterranean cruises.