The present paper reffers to the Operative Commandment for Marine Depollution (OCMD), the national planning, coordination and ruling of the activities in case of marine pollution by hydrocarbons and other harmful substances structure, which is part of the national system. The OCMD componence, its attribution as well as those of the OCMD members's authorities, the training programme, the specialized personnel, trained and certified in the field of intervention, the specialized equpiment, as well as a national intervention strategy are the factors contributing to the efficient functioning of the national system of action against the marine pollution. [ABSTRACT FROM AUTHOR]