A data signal accurately reflecting the actual state of a storage vessel is sent to a station side. A fuel cell system (1) includes a hydrogen supply line (32) that connects a tank main body (311) and a fuel cell stack (2), and a main stop valve provided to the hydrogen supply line (32). A communicative filling system (6) generates a data signal based on the state of a hydrogen tank (31), and sends the generated data signal to a station (9). A vehicle (V) includes an FCV-ECU (11) that assumes processing related to control of the fuel cell system (1), and a communicative filling ECU (61) that assumes processing related to control of the communicative filling system (6). Then, the communicative filling ECU inhibits start of communication with the station (9) at least when determined that a main stop valve (312) is in a completely closed state.