p. 229 - 239 L'UTILISATION DE NOUVEAUXFILS SYNTHETIQUES A LA CONFECTION DES MADRAGUES MARINES SUR LE LITTORAL ROUMAIN DE LA MER NOIRE Nicolae Jelescu et Victoria Boghici Institut Roumain de Recherches Marines Constanta Abstract The authors present the results of the experimentation in marine set net with trap manufacturing of a large of syn- thetic fibres: polyamides, polyesters, polyolefines and polyvinyl alchohols. Materials durability was proved by breaking strength determination. Correlation between durability and cost leads to the conclusion that the most advantageous are polyesters fibres and polyvinyl alcohols.