There was a book I read in my school’s library when I was 8 or so on the Bermuda triangle that claimed (or at least implied?) that a roman ship was sunk there.

Though the book was for children and presumably completely unreliable, I have seen it written before, so maybe that’s where they saw it too?

https://www.androidpolice.com/nova-launcher-acquired-by-branch/

It was bought by a data analytics company last summer, unfortunately.