To inhibit a watercraft which does not conform to regulations of respective countries or respective regions from being used in the relevant countries or regions.
A watercraft includes a watercraft body, a GNSS receiver 68, a storage device 69, and a control device 10. The GNSS receiver is mounted on the ship body, and receives position information of the watercraft body. The storage device stores area information including position information of specific area. The control device verifies the current position of the watercraft body obtained by the GNSS receiver against position information of the specific area. The control device, when the current position of the ship body is included in the specific area, controls the watercraft body in a normal mode. The control device, when the current position of the watercraft body is not included in the specific area, controls the watercraft body in a limitation mode where at least a part of functions of the watercraft body is limited compared with the normal mode.
KINOSHITA YOSHIMICHI
Yukio Ono
Yamashita