<p>This thesis examines the development of recreational amateur swimming in New Zealand between 1936 and 1956. During this period, swimming ability and drowning prevention became issues of national importance and extensive measures were introduced to encourage the expansion of amateur swimming culture. The growth of interest in swimming was partly a response to the perception that drowning deaths were too common. This thesis discusses the trends and characteristics of deaths by drowning. The extension of swimming was also largely thanks to the efforts of the Labour Government, elected in 1935, which instituted a new and active approach to enabling leisure. In 1936, just months after being elected, Labour made its first move towards extending New Zealanders’ opportunities for aquatic recreation by offering greater support to voluntary swimming and lifesaving associations. In 1938, under the newly enacted Physical Welfare and Recreation Act, the Government launched the Learn-to-Swim campaign, followed by the Prevent Drowning campaign in 1949. These campaigns helped to establish ‘proper’ swimming as a valuable part of modern life, an increasingly popular leisure pursuit, and an expected skill, as well as advocating the necessity of ‘water wisdom’. By 1956, the perceived need for government intervention into leisure had diminished and swimming and drowning prevention were once again viewed as private matters, the concern of the individual and not of the state. Consequently, the Government (now that of the National administration) withdrew its support from the campaigns. However, swimming was firmly established as an enjoyable, valuable, and important recreational pursuit. Thus, the Water Safety campaign was launched by voluntary swimming and lifesaving organisations to take the place of the Learn-to-Swim and Prevent Drowning campaigns. This thesis argues that the 1936-1956 period was one of significant growth in recreational swimming and the state was an important and active agent in this process of modernising New Zealand’s swimming culture.</p>