Answer:
It will slow down your reaction time, and reducing ability to control the boat and it will give physical fatigue .
Step-by-step explanation:
When you aboard a boat you are subjected to both low and high frequencies from the wind and from the engine of the boat. You can feel the waves which are of low frequency as a vibration.
Like other machines boat can produce noise and vibration together that will make you tired, and in some cases your reaction times will slow down and you will loose the ability to control that boat.
After that the heat and glare from the sun will also make you physically fatigue and in this condition operating a boat is more dangerous.