I’m sure they’re used for something…
A wheel that carries a considerable amount of weight.
The Bulbous Forefoot or, Bulbous Bow, greatly increases fuel efficiency and the fins help with stability. More about this technology (an American invention) here. The ‘snoot’ shown below belongs to a trawler but most ships are built with bulbous bows these days.
There was a time when aircraft flew without the aid of computers….
The innards of an aircraft engine. Kind of like human innards. There’s something very artistic about engines. Where would we be without heat engines?
They just don’t make them like they used to….