Question 1186Navigation General

The correct answer is B) waves. The direction of the waves at sea level provides the best estimate of the wind direction. Waves are primarily generated by the wind blowing across the water's surface, and the wave direction closely follows the wind direction. Observing the wave direction is a reliable method for determining the wind direction near the water's surface, which is the most relevant for vessel operations. The other options are not as reliable for estimating wind direction. Vessel heading can be affected by factors other than just the wind, such as currents. Swells are generated by distant winds and may not accurately reflect the local wind direction. Cloud movement is more indicative of upper-level winds rather than the wind at sea level.