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 crucial because, in the event that the operator is ejected from the boat, the engine can be turned off automatically, preventing the boat from continuing to operate without control. This helps to avoid potential accidents or collisions that could occur if the vessel is left running and unattended.

Using a kill switch significantly enhances safety while boating, as it ensures that individuals who may be thrown from the vessel will not be at risk of the boat circling back towards them or causing further harm.