Project no. PL96-1011 of the Transports Program of DGVII, of the CEC 4th Framework Programme. Development of a European communication standard between towers for maritime surveillance. The responsibility of INESC/INOV consisted in the integration of MONICAP data in the mentioned standard. They other partners were INGENIA, ALENIA, DASA ERAAM, STN, MOHER and PAGE IBÉRICA.