According to agency " Mourge ", the director of the Organization of fishery and pisciculture of Iran ("Shilat") Vahid Zare declared that in the Caspian sea 10 fishing boats that converted from fishing schooners,engaged with fishing of tows, for surveillance in the sea and liquidation of proacher networks. According to Vahid Zare the way of fishing with tral in deep-water and surface, applied at a fishing of various kinds of fishes, leads to serious problems from the point of view of preservation of sea fish stocks. There is a question on the agenda of work of the Organization "Shilat" that an introduction of new ways of fishing and development of the schedule of the resolved fishing convenient for fishermen. It will allow to reduce quantity of problems with which fishermen collide, and to provide safety of fish stocks. Vahid Zare informed also that number of the fishing boats engaged with fishing of tows is reduced to 80 units and now 127 boats instead of 207 are engaged in fishing of tows. Thus 10 boats are reconstructed and used for patroling in the sea and liquidation of proacher networks.