p. 165 - 174 RESULTATS DES RECHERCHES EFFECTUEES POUR L'AMELIORATION DE LA PECHE AUX MADRAGUES MARINES Nicolae Jelescu et R. Elefteriu Institut Roumain de Recherches Marines Constantza Abstract The results of investigations aiming at improving sea trap nets installation systems and the possibillity of adapting fishing equipment at various depths, following alteration in the manufac- turing process are discussed. The main factors influencing trap-net fishing and the criteria for the investigations are discussed, as well as the means and work methods. The analysis of the points to the conclusion than can be drawn on basis of these tests.