Abstract
Definite and analyzed factors having influence on the process of overload of loads in port and on treatment of ships and carriages. Their priority is definite. The process of functioning of technological shifting complexes (terminals) of port is described and the method of determination of their optimum parameters is offered by an imitation dynamic design. Classification of terminals and models is offered. The basic modify parameters of models and boundary of their changes are definite. The cases of outages of transport vehicles are described. Flow-charts and algorithm of construction of simulation models are developed. It is suggested to use principle of the «special events» and their list is definite. The basic requirements are definite by the construction of models and determination of their adequacy. The possible complex of optimization parameters of simulation model is offered.