An engine cut-off switch is an operable emergency cut-off engine stop switch installed on a motorboat and that attaches to the motorboat operator by an engine cut-off switch link -- the lanyard or wireless cut-off device used to attach the motorboat operator to the engine cut-off switch installed on a motorboat.
Engine Cut-Off Switch laws requires the operator of a motorboat equipped with an engine cut-off switch to use this safety feature while the engine is running and the vessel is underway, and to attach the cut-off switch link to their person, clothing or personal flotation device. In the event the operator falls overboard or otherwise is moved from normal operating position, the switch would immediately shut off the engine.