What is the primary purpose of a kill switch on a boat?

The primary purpose of a kill switch on a boat is to shut off the engine if the operator falls overboard. This safety feature is essential because it prevents the boat from becoming operatorless and potentially causing accidents or drifting into hazardous areas. If the operator falls overboard, the kill switch is designed to immediately stop the engine, which helps to prevent further injury to the person in the water and ensures that others are not at risk from an unattended, uncontrollable boat. This safety mechanism is a critical component in promoting safe boating practices and protecting both the operator and others on the water.