The article deals with the issues of mobile devices using in simulator systems as visualizers of the dynamics of simulated controlled objects. Such approach can initiate the development of compact simulators, which are based on the main idea that a mobile device can serve, in fact, as an interface that replaces existing cumbersome simulators. The proposed form of general scheme of the simulator system includes three main components. The first is a computer model of the control object dynamics. The second component transmits and receives data on changes in coordinates and speeds of the control object from the computer model to an external device that provides visualization of the control object dynamics and back. The third component directly implements visualization, and in this work is presented by a mobile device such as a tablet/smartphone. The main used technologies are specified in the paper, the proposed approach is illustrated by the example of simulating of the marine vessel dynamics. As a result of work, the simulator system is implemented, which operates in two modes - automatic and manual control mode. In the first mode, it is possible to set the necessary parameters, and in the second mode it is possible to control the object movements by the touch buttons and slopes of the device, while the mobile device serves as a source of control effects realized by the exact sensors of mobile device.