The present study has as a research theme the pollution of the national maritime waters caused by the operations of extraction, storage and transport of oil and its derivatives. Its general objective is to analyze how the understanding of the causes of pollution arising from the extraction, storage and transportation of oil and its derivatives helps to reduce the contamination of the Brazilian maritime waters, thus contributing to the improvement of the quality of these waters. It is the result of a bibliographical research based on the works of Eliane M. Octaviano Martins 2007 and 2009. Thus, the first chapter showed that accidents with oil spills are considered to be more harmful to the environment compared to other types of pollution in the sea. In addition, human error was highlighted as the most important error in maritime accidents and was related to the poor training of the professionals involved in the operation. The study facilitates understanding of the major flaws in the prevention of marine pollution from oil spills and shows the importance of risk management. It addresses the Brazilian position regarding international maritime safety standards and prevention of the marine environment. It evidences the importance of controlling the damage caused by an oil spill accident through efficient response in a timely manner to the distress. It exposes the condition of Brazil in the IMO, some Brazilian legislation and IMO codes and conventions. It shows how many standards are developed for the purpose of responding to major accidents both nationally and internationally. It demonstrates the harm caused by the lack of speed in enacting laws and enforcing standards. It presents some unilateral measures, some regional agreements and their effects. The overall goal is achieved through specific objectives. The paper concludes that oil production has sufficient economic and social relevance to assume its risks and that prevention of pollution is the best way to improve the quality of the Brazilian marine environment.