[EN] This end-of-degree project contemplates the extension of the marina in the municipality of Pobla de Farnals. The main objectives are both to show the knowledge acquired by the student throughout the different subjects and to develop the necessary calculation procedure for the measurement of the expansion. The process for the composition of the dissertation begins with its own definition and establishing the limits that must be reached. After that, a series of annexes related with the acquisition of information such as land features, climatology or train of waves are developed. Thirdly, a study to the plant port alternatives, jetties and docks section, in addition to some stability checks, is developed. Finally, we might proceed to the sizing of gas station, power lines and drinking water. As the result of these documents, a report which introduces all these aspects is written, besides the information concerning the location of the port and other simpler services that have not been addressed in attachments. All that is joined with graphic documentation by means of a few maps. To sum up, the most important is the compliance whit the limits established at the beginning of de dissertation. It is verified that the dimensions of the port extension give the required service and are accompanied by the complementary services demanded.