SHIP COMMUNICATION SYSTEM, METHOD, TRANSMISSION DEVICE AND COASTAL CALCULATION CENTER

A ship communication system has a coastal calculation center and at least one of ships. The ship has a transmission device having a first communication module, a second communication module and a controlling and processing core. The first communication module is configured to communicate with a satellite communication device. The second communication module is configured to communicate with a base station. The controlling and processing core is configured to determine whether the second communication module is able to communicate with the base station. When the second communication module is able to communicate with the base station, the ship utilizes the second communication module perform data transmission with the coastal calculation center via the base station; when the second communication module is unable to communicate with the base station, the ship utilizes the first communication module perform data transmission with the coastal calculation center via the satellite communication device.