Drawing of a heptere ("seven") from the 1541 book "De re navali" by Lazare de Baif (1496-1547). Uploaded to show the misconceptions of the appearance of multi-oared galleys at the time, compared to modern interpretations.
<a href="https://en.wikipedia.org/wiki/w:Lazare_de_Baif" class="extiw" title="en:w:Lazare de Baif">en:w:Lazare de Baif</a>
Lazare de Baif - De re Navali - 1541 book