The East African Naval Force (EANF) was constituted on 1 July 1950, becoming the Royal East African Navy (REAN) on the Queen's birthday of June 1952. The REAN regularly provided Aid to the Civil Power. In emphasising its success in teaching East Africans skills of economic management and good governance, the Navy was demonstrating that it too played an important role in preparing East Africans for eventual self-rule. E.A.Nicholson's welfare programme for African ratings went beyond naval training and was again tied to colonial development. The programme improved the social and economic condition of the men, their families, and the community, and illustrated their 'progress' under Britain's paternalistic instruction. The collaborative relationship with the Sultanate continued to be vital to Britain's imperial power in the region, but was challenged by Arab nationalism.