Which of the following is NOT a boating stressor that can lead to fatigue on the water?

High altitude is not considered a traditional boating stressor that can lead to fatigue on the water in the same way that glare from the sun, the motion of the boat, and noise and vibration from the engine can.

Boating stressors like glare from the sun can impact visibility and cause eye strain, leading to fatigue because the eyes are working harder to focus and adjust. The motion of the boat, particularly in choppy water, can cause discomfort and physical strain, contributing to tiredness as the body works to maintain balance. Additionally, noise and vibration from the engine can create a stressful environment that can interfere with relaxation and ultimately lead to fatigue.

While high altitude can have its own effects on the body, particularly related to oxygen levels and physical exertion, it is not a specific stressor originating from the boating experience itself. Thus, it does not directly contribute to immediate fatigue on the water in the same manner as the other factors listed.