<p>The burden on crewmembers is reduced and a risk of violating regulations due to human errors is also reduced. The present invention is equipped with an environment-regulated-marine-zone detection device (3) which includes a movement tracking device that tracks the movement of a ship based on input data; a first computation device that computes an arrival distance and a arrival time until arriving at an environment regulated marine zone or a departure distance and a departure time until departing from an environment regulated marine zone based on data transmitted from the movement tracking device, as well as data about the environment regulated marine zone in a built-in database of the first computation device or data about the environment regulated marine zone in a built-in database of another external device; and a display device that displays the arrival distance and the arrival time until arriving at the environment regulated marine zone or the departure distance and the departure time until departing from the environment regulated marine zone based on the data transmitted from the first computation device.</p>
