A vessel operating system (7, 7a, 7b) comprising: a first outboard motor configured to receive an electric operating signal, which indicates operating both shifting and throttle opening degree, the first outboard motor being controlled in accordance with the electric operating signal; a second outboard motor configured to receive a mechanical operating amount, which indicates operating both shifting and throttle opening degree, the second outboard motor being controlled in accordance with the mechanical operating amount; a remote control that includes an operating tool (15, 15a), the operating tool (15, 15a) being configured to output the electric operating signal indicating operating the shifting and the throttle operating degree of each of the first and second outboard motors; the remote control outputs an electric operating signal, which indicates operating both shifting and throttle opening degree, in accordance with a position of the operating tool, a first transmission path through which the electric operating signal is transmitted from outside of the first outboard motor to the first outboard motor based on the position of the operating tool (15, 15a); and a second transmission path through which the mechanical operating amount is transmitted from outside of the second outboard motor to the second outboard motor based on the position of the operating tool (15, 15a), an actuator unit including an actuator and a controller, the actuator being connected to the second transmission path, the controller being configured to control the actuator, wherein the controller is receiving the electric operating signal from the operating tool (15, 15a) of the remote control, and is configured to control the actuator to output the mechanical operating amount through the second transmission path to second outboard motor in accordance with the electric operating signal outputted from the remote control. a first outboard motor configured to receive an electric operating signal, which indicates operating both shifting and throttle opening degree, the first outboard motor being controlled in accordance with the electric operating signal; a second outboard motor configured to receive a mechanical operating amount, which indicates operating both shifting and throttle opening degree, the second outboard motor being controlled in accordance with the mechanical operating amount; a remote control that includes an operating tool (15, 15a), the operating tool (15, 15a) being configured to output the electric operating signal indicating operating the shifting and the throttle operating degree of each of the first and second outboard motors; the remote control outputs an electric operating signal, which indicates operating both shifting and throttle opening degree, in accordance with a position of the operating tool, a first transmission path through which the electric operating signal is transmitted from outside of the first outboard motor to the first outboard motor based on the position of the operating tool (15, 15a); and a second transmission path through which the mechanical operating amount is transmitted from outside of the second outboard motor to the second outboard motor based on the position of the operating tool (15, 15a), an actuator unit including an actuator and a controller, the actuator being connected to the second transmission path, the controller being configured to control the actuator, wherein the controller is receiving the electric operating signal from the operating tool (15, 15a) of the remote control, and is configured to control the actuator to output the mechanical operating amount through the second transmission path to second outboard motor in accordance with the electric operating signal outputted from the remote control.