Histories of harbour development at Cochin have assumed that the Cochin Harbor Project was motivated by the colonial state’s economic interests and that it provides yet another illustration of the technological hubris associated with high modernism. Through a close analysis of the debates and discussions preceding the execution of the project however, this chapter shows that both of these assessments are inaccurate. Unlike what such accounts suggest, every stage of the Cochin Harbor Project was mired in doubt – with senior officials conceding that the project was likely to have an adverse impact on the port and its surroundings. Why then was this project executed despite such concerns? I argue that far from representing the colonial state’s confident mobilization of technology to meet its economic and strategic needs, as commonly assumed, the Cochin Harbor Project was in fact an uneasy compromise between the divergent and often competing political and economic interests of the colonial state and the princely states of Malabar. At a time of increasing environmental and political instability, a development project, this chapter shows, offered the best possibility of not only meeting the criterion of ‘productive works’ that was so central to colonial finance but also securing the cooperation of the princely states of Malabar that were becoming increasingly assertive.