Abstract: The present invention refers to a safety stopping device for marine engines and employs a cord connected at one end to the pilot of the boat and at its other end to the safety device for the grounding of the ignition circuit of the engine either by operating a pushbutton, or by ripping off said cord held between said pushbutton and a retaining head traversing said button and connected by a stem to a metallic head capable by its axial movement to connect two fixed contact terminals interposed in said ignition circuit.