System for determination of port arrival and departure, port arrival and departure determination method, and recording medium recording port arrival and departure determination program

1. A system for determination of port arrival and departure, the system comprising:

a memory; and

a processor coupled to the memory,

wherein the processor:

displays a map including sea areas;

receives designation of a line on the displayed map;

sets, as a first area, an area on a right side of the line in a direction which is specified by a reception order of a start point and an end point of the line and sets, as a second area, an area on a left side of the line in the direction;

obtains position information on a vessel;

sets a first flag to an ON-state when determining the position information indicates that the vessel is within the first area and obtains the position information on the vessel again;

sets a second flag to the ON-state when determining the position information indicates that the vessel is within the second area and obtains the position information on the vessel again; and

determines departure from a port of the vessel when the vessel is within the second area and the first flag is the ON-state and determines arrival to the port of the vessel when the vessel is within the first area and the second flag is the ON-state.

2. The system according to claim 1 , wherein when determining the position information indicates that the vessel is not within the first area and the second area, the processor sets the first flag to an OFF-state, and when determining the position information indicates that the vessel is not within the first area and is within the second area, the processor determines the departure of the vessel when the first flag is the ON-state.

3. The system according to claim 1 , wherein when determining the position information indicates that the vessel is not within the second area and the first area, the processor sets the second flag to an OFF-state, and when determining the position information indicates that the vessel is not within the second area and is within the first area, the processor determines the arrival of the vessel when the second flag is the ON-state.

4. The system according to claim 1 , wherein the processor determines that the movement from the first area to the second area is departure from the port or the movement from the second area to the first area is departure from the port according to which one of ends of the line is received first as the start point.

5. The system according to claim 1 , wherein when the arrival to the port is determined, the processor transmits information on the vessel to a terminal associated with the port.

6. A port arrival and departure determination method comprising:

displaying, by a computer, a map including sea areas;

receiving designation of a line on the displayed map;

setting, as a first area, an area on a right side of the line in a direction which is specified by a reception order of a start point and an end point of the line and sets, as a second area, an area on a left side of the line in the direction;

obtaining position information on a vessel;

setting a first flag to an ON-state when determining the position information indicates that the vessel is within the first area and obtaining the position information on the vessel again;

setting a second flag to the ON-state when determining the position information indicates that the vessel is within the second area and obtaining the position information on the vessel again; and

determining departure from a port of the vessel when the vessel is within the second area and the first flag is the ON-state and determining arrival to the port of the vessel when the vessel is within the first area and the second flag is the ON-state.

7. The port arrival and departure determination method according to claim 6 , further comprising: when determining the position information indicates that the vessel is not within the first area and the second area, setting the first flag to an OFF-state, and when determining the position information indicates that the vessel is not within the first area and is within the second area, determining the departure of the vessel when the first flag is the ON-state.

8. The port arrival and departure determination method according to claim 6 , when determining the position information indicates that the vessel is not within the second area and the first area, setting the second flag to an OFF-state, and when determining the position information indicates that the vessel is not within the second area and is within the first area, determining the arrival of the vessel when the second flag is the ON-state.

9. The port arrival and departure determination method according to claim 6 , further comprising:

determining, according to which one of ends of the line is received first, that the movement from the first area to the second area is departure from the port or the movement from the second area to the first area is departure from the port as the start point.

10. The port arrival and departure determination method according to claim 6 , further comprising:

transmitting, when the arrival to the port is determined, information on the vessel to a terminal associated with the port.

11. A non-transitory computer-readable recording medium recording a port arrival and departure determination program which causes a computer to execute a process, the process comprising:

displaying, by a computer, a map including sea areas;

receiving designation of a line on the displayed map;

setting, as a first area, an area on a right side of the line in a direction which is specified by a reception order of a start point and an end point of the line and sets, as a second area, an area on a left side of the line in the direction;

obtaining position information on a vessel;

setting a first flag to an ON-state when determining the position information indicates that the vessel is within the first area and obtaining the position information on the vessel again;

setting a second flag to the ON-state when determining the position information indicates that the vessel is within the second area and obtaining the position information on the vessel again; and

determining departure from a port of the vessel when the vessel is within the second area and the first flag is the ON-state and determining arrival to the port of the vessel when the vessel is within the first area and the second flag is the ON-state.

12. The non-transitory computer-readable recording medium according to claim 11 , further comprising:

when determining the position information indicates that the vessel is not within the first area and the second area, setting the first flag to an OFF-state, and when determining the position information indicates that the vessel is not within the first area and is within the second area, determining the departure of the vessel when the first flag is the ON-state.

13. The non-transitory computer-readable recording medium according to claim 11 , when determining the position information indicates that the vessel is not within the second area and the first area, setting the second flag to an OFF-state, and when determining the position information indicates that the vessel is not within the second area and is within the first area, determining the arrival of the vessel when the second flag is the ON-state.

14. The non-transitory computer-readable recording medium according to claim 11 , further comprising:

determining, according to which one of ends of the line is received first, that the movement from the first area to the second area is departure from the port or the movement from the second area to the first area is departure from the port as the start point.

15. The non-transitory computer-readable recording medium according to claim 11 , further comprising:

transmitting, when the arrival to the port is determined, information on the vessel to a terminal associated with the port.