Steering oar starting control circuit and ship control device

The invention relates to a steering oar starting control circuit and a ship control device. The steering oar starting control circuit comprises an isolation amplifier, a detection control module and an electromagnetic valve. The signal input end of the isolation amplifier is used for being electrically connected with the signal output end of the rotating speed control handle, the signal output endof the isolation amplifier is electrically connected with the detection input end of the detection control module, and the power supply terminal of the electromagnetic valve is used for being electrically connected with a working power supply through the control output end of the detection control module. A valve passage of the electromagnetic valve is used for communicating the gas cylinder witha host compressed air pipeline; and the detection control module is used for conducting a working power supply to supply power to the electromagnetic valve when detecting that a rotating speed control signal output by the rot