According to a calculation by the International Sea Organization (IMO), the amount of carbon dioxide emitted by the global fishing industry is much higher than that estimated. It is indicated that the ships emit twice as much as the planes: 1.120 million tons of carbon dioxide annually, 4% of the total global emissions. This calculation aims to have an alarm signal, since if not managed it will increase more than 30% for the year 2020. However, it is difficult to manage the naval sector politically and to fulfill the objectives established by the Kyoto Protocol, since the ships circulate all over the world and are registered in the country that suits them, in which they do not correspond.