[Does so]

Columbus’ crew could see the earth’s curvature from a yardarm.

Everyone can.

[Repealthe17thAmendment]

Whether you can see the curvature of the earth or not, the existence of the horizon proves it is curved. It's because of the curve that we can only see a limited distance.

When a ship on the ocean drops from view along the horizon, it has not submerged, it is obscured by the curve of the earth.

[wardaddy]

I’ve sat in a few bosuns chairs hoisted and sat in captains chair albeit Honduran licensed on the bridge

I didn’t see it

But my eyes are bad