The 2nd was a giant floating platform replete with marble palaces, gardens, & a system of plumbing for baths.
(📷Carlo Cestra carlocestra.com/home.php)
Source: books.google.co.uk/books?id=3nAbA…
- Report on Project Diana, Italian Navy: web.archive.org/web/2010070119…
- Caligula's Floating Palaces: archive.archaeology.org/0205/abstracts…
- Divers to scour lake for Emperor Caligula's ship: washingtonpost.com/news/worldview…
The Nemi Ships (U Chicago): penelope.uchicago.edu/~grout/encyclo…