In the past the decisions concerning whether to continue or interrupt a fishing operation were based primarily on the operator's previous experience(1). This procedure often led to wrong decisions and unnecessary loss of money and time.

This paper describes a decision-making method based on risk analysis theory and previous operation results from a field under study. The method leads to more accurate decisions on a daily basis allowing the operator to verify each day of the operation if the decision being carried out is the one with the highest probability to conduct to the best economical result. An example of the method application is provided at the end of the paper.

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