Today, oil is the world s leading energy source. In Brazil, the productive dominance of the offshore fields shows the importance of the logistical support bases in chain value, the link between the maritime facilities and their onshore suppliers. Faced with the capital intensity and the high costs of an exploratory campaign, the location of these terminals is strategic for the success of the campaign. In addition to presenting the most important aspects of the context, this work aims to present a study for the base installation of offshore logistic support operation in the Carcará Field campaigns in Santos Basin. Through the construction of an AHP model in a new simplified format, it was possible to suggest a ranking of port terminals regarding their vocation to provide offshore logistics support service. The AHP after the development of the simplified form, becomes even more a powerful tool to determine the correct decision, even in front of the numerous variables, minimizing the possibility of inconsistent combinations and errors of judgment, helping and supporting the organizations and people in the decision making collaborative projects quickly and accurately.