Drive system comprising: multiple drive units, each drive unit having an internal combustion engine, and an electronic control device (4S,4C,4P); and a remote control device capable of transmitting a signal for each internal combustion engine to execute a target drive state, wherein the electronic control devices (4S,4C,4P) on an internal combustion engine side are configured to monitor a drive state of the respective engines, wherein the control devices (4S,4C,4P) are configured to detect an abnormal operation state, to issue an abnormality signal, and to set an opening degree of the respective throttle of the engine being in the abnormal operating state to a preset small value, wherein the abnormality signal is transmitted to the electronic control devices (4S,4C,4P) of the other normally operating engines to make the respective electronic control devices (4S,4C,4P) to set the throttle opening degrees to the preset small value, characterized in that the remote control device comprises electronic control devices (10S,10C,10P), which can communicate with each other, on a remote control device side corresponding to the same number of electronic control devices (4S,4C,4P) on the internal combustion engine side, and the electronic control devices (4S,4C,4P) are configured to issue the abnormality signal to the remote control device, wherein the remote control device is configured to transmit the abnormality signal, or the preset small value for the throttle opening as a new target opening value to the electronic control devices (4S,4C,4P) of the other normally operating engines to make the respective electronic control devices (4S,4C,4P) to set the throttle opening degrees to the preset small value. multiple drive units, each drive unit having an internal combustion engine, and an electronic control device (4S,4C,4P); and a remote control device capable of transmitting a signal for each internal combustion engine to execute a target drive state, wherein the electronic control devices (4S,4C,4P) on an internal combustion engine side are configured to monitor a drive state of the respective engines, wherein the control devices (4S,4C,4P) are configured to detect an abnormal operation state, to issue an abnormality signal, and to set an opening degree of the respective throttle of the engine being in the abnormal operating state to a preset small value, wherein the abnormality signal is transmitted to the electronic control devices (4S,4C,4P) of the other normally operating engines to make the respective electronic control devices (4S,4C,4P) to set the throttle opening degrees to the preset small value, characterized in that the remote control device comprises electronic control devices (10S,10C,10P), which can communicate with each other, on a remote control device side corresponding to the same number of electronic control devices (4S,4C,4P) on the internal combustion engine side, and the electronic control devices (4S,4C,4P) are configured to issue the abnormality signal to the remote control device, wherein the remote control device is configured to transmit the abnormality signal, or the preset small value for the throttle opening as a new target opening value to the electronic control devices (4S,4C,4P) of the other normally operating engines to make the respective electronic control devices (4S,4C,4P) to set the throttle opening degrees to the preset small value.