The MIRACETI association provides cetacean recognition training on board all vessels equipped with REPCET® software. An educational kit has been specially designed for this purpose and is presented to officers on the deck. At the end of the two hours intervention, the officers are able to recognize the various cetaceans and thus to correctly transmit positions in the software. They are also introduced to the problematic of ship strikes as a whole, the risks and, above all, the solutions.