Professor Jay Forrester, quem desenvolveu o metodo System Dynamics. Na foto, estou ao lado dele.1. IntroductionIt is becoming increasingly difficult to ignore the logistic relative cutting-edge phase concerning the collaboration among the participants of the Supply Chain. Despite the lack of abundant scientific works, some authors affirm that is possible to find material nominating this phase as the logistic new wave. The past decade has seen the fast development of collaboration among the companies in order to share their expertise and provide better results for the logistic network instead of searching individual results (Silva et al. 2009 (b), 2010). The term collaboration applied to logistic problems became popular with the CPFR (Collaborative Planning, Forecasting and Replenishment) approach, which is an evolution in the companies integration in order to obtain sales increase, inter-organizational alignment as well as operational and administrative efficiency. Among its diverse applications one of them which deserves special attention is related to CTM (Collaborative Transportation Management). The CTM focus on providing reductions in the transactions and risks costs, enhancing the performance of service and capacity, as well as achieving a more dynamic Supply Chain (Silva et al., 2009). Therefore, the present paper, part of a thesis in development, seeks to describe a real problem existing in the exportation process in order to evaluate the collaborative action through the Supply Chain. The general exportation process involves the manufacturing industries, which need to export their manufactured goods and the maritime carriers, which offer their ships to transport goods. Among the several existing barriers to fulfill this goal as the exigency of technical standardization and restrictions of environment nature, the maritime freight price whilst the cheapest transportation mode, is also a problem for a company when deciding to export. In most cases each industry individually negotiates the freight price with the maritime carriers and there is no bargain power involved in the negotiation; as a consequence, the system loses. Thus, there is a gap to be explored in order to propose a reasonable manner to negotiate maritime freight prices and spread out the Brazilian exportations of manufactured goods, which is the proposal of this study.1.1 Objective and methodologyThe current study has the objective to present a new approach to analyze the role of the collaboration in the maritime transportation in order to reduce freight costs pertinent to the manufactured goods exportation process. In order to facilitate the reader comprehension, an initial description of a general exportation process was presented including the main involved agents in the maritime transportation chain and a review about CTM, its definition and potential benefits were pointed out.After examining the literature, System Dynamics (SD) method was chosen to properly model the problem in study due its appropriated characteristics in modelling logistic problems with a high level of abstraction, proportioning the visualization of the interrelations between the involved variables through the time. Thus, extending the causal-diagram language proposed by Silva et al. (2011), a preliminary stock and flow-diagram was employed in order to analyze the behavior of the collaboration in the maritime transportation process. In order to simplify the problem,