The article proposes an approach to the organization of counteraction to the probable enemy on the basis of the joint use of mechatronic devices using the phenomenon of electric explosion to counteract homing systems and solving a group control task in order to protect the target from defeat. The above class of tasks involves the use by the attacked of mechatronic devices that play the role of mobile defenders, in the quality of which can act as a self-propelled source of interference, distracting the attacking object (missile or torpedo) by intercepting it, and a shock RTK aimed at destroying a dangerous object. A characteristic feature of the considered tasks is the incompleteness of a priori information about the distance to the attacking object and the possibility of instant use of active means. It is shown that the presence of even only a second defender is advisable, since it significantly increases the interception time compared to the case of only one defender. Also, an additional defender increases the probability of choosing one of the defenders for the intermediate pursuit instead of the main target. Under the conditions set in the considered models for starting positions, speeds and power reserve, in the case of a real torpedo attack on defenders, when following the constructed schemes for the release of defenders, the torpedo will not have enough fuel to defeat the main target. The methods of interference formation based on electric explosion are considered. It is proposed to use mechatronic hydroacoustic counteraction devices capable of moving in an aquatic environment and creating broadband interference of a given intensity as such sources. A model example of the use of mechatronic devices in a given scenario is considered.