Like I asked and you have failed to answer, how high would the swells have to be to obscure 75' of the lighthouse at a 6' observer height?

Seems to be irrelevant as we don't know how far those waves are and the distance to the lighthouse is not stated in the image.

The main take away is that you are mistaken that an object or wave would need to be 75 feet to cover 75 feet in the distance. A fairly embarrassing blunder from someone trying to instruct us on the truth of nature.

The point is that much of the lighthouse and almost all the island is hidden! Why are you so bothered about whether it's 75' or 48 ' hidden?

You seem to have forgotten that Wolfie's video shows the lighthouse from 100 feet above sea-level and from 6 feet above sea-level.

What's the Observer height in the above images? Wolfie is very clear, 100' & 6', in his:

Here are more accurate figures for distances and heights:

The calculated heights and distance are, with standard refraction:

From 100 feet: Distance = 12.6 miles, Viewer height = 100 feet; giving horizon distance = 13.2 miles, Hidden height - none.

From 6 feet: Distance = 12.4 miles, Viewer height = 6 feet; giving horizon distance = 3.2 miles, Hidden height - 48 feet.

And in this video he shows the view from 100 feet then zooms out to show a wide view zooms back out, then shows the view from 6 feet above sea level:

Flat Earth - Zooming on Lighthouses and a ship - 6ft vs 100ft Elevation. *Wolfie6020*There is no significant swell and at 1:00 in the above video there are some waves on the ocean horizon but they have minimal effect on the view.

Now YOUR explanations, please!