The collection of socio-economic data from professional fishermen makes it possible to calculate economic indicators by fleet segment and contributes in particular to evaluating the economic performance of each fleet and the impacts of the implementation of management measures. It also makes it possible to evaluate the weight of French fishing in Europe, the share of fishing in the national and regional economy as well as the attractiveness of the profession and the impact of cost variations such as the cost of fuel.

ObsBio, the collection of individual biological parameters such as size, weight, sex, age are necessary data to know by elevation, the share of the populations in the recruitment of young fish, in the natural mortality and in the mortality by fishing