The second apotropaic gorgon was Joyce's stream of consciousness, evoking images of anti-Catholic gorgons.
Paglia, Camille SS. 49 The Birth of the Western Eye
[1]: https://archive.org/stream/263791532sexualpersonaeartanddeca...
It’s at a state park called Kiptopeke. You can rent kayaks and paddle out to see them up close.
https://www.atlasobscura.com/places/kiptopeke-s-concrete-fle...
It turns out that if you don't need your ship to go fast, all you need to do is have a structure that can produce enough displacement to be bouyant and stable. You could carve a ship out of marble if you wanted.