It has long been known that if you take you hand off the tiller or steering wheel, many outboard powered boats will circle hard to the right due to propeller torque. The boating industry has had various name for it through the yeaers. In the 1980’s some called it the “Circling Phenomenon”. Some call it a “runaway boat”. In today’s world, the industry is calling it “ongoing operation”

A boat can strike a wave or wake ejecting the operator (and typically the passengers), the boat goes into the circle of death, and keeps running over those in the water with its propeller until they get out of the way or it runs out of gas.

The same thing can happen if an operator temporarily removes their hands from the steering wheel or tiller, sometimes to grab something blowing at them, off of them, or past them. The boat swerves hard to the right, ejects the operator (and often the passengers) and begins to circle.

“Circle of Death” is a more descriptive phrase and better teaches of the hazard than “ongoing operation”.

Current boating industry warnings related to kill switches (which the industry does not call kill switches any more) do not come out and specifically teach or or warn of the Circle of Death.

I constructed a couple examples of warnings that could teach of the Circle of Death and posted them below.

Example of a Circle of Death warning

Example of a Circle of Death warning

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