This research was build the model after marine hazard and simulate from the viewpoint of making damage by the marine hazard small not from the viewpoint of preventing a marine hazard. Elements of the model were quantified to easy to compare and examine the simulation result. Human factors, one of the elements of the model, is difficult to quantifying. So human factors was made into random number. To simulate the model which has indefinite elements used application software based on system dynamics. This research focused on after the marine hazard, the model made the risks of which extent occurs because of the change in the situation. We tried to examine the causal relation between the human factors and the occurring event risk which based on the model.