An 18th-century print of a royal barge as used by Hiero II. Copied from a work by <a href="https://en.wikipedia.org/wiki/Nicolaes_Witsen" class="extiw" title="w:Nicolaes Witsen">Nicolaes Witsen</a>, his <i>Aeloude en Hedendaegsche Scheepsbouw en Bestier; Nicolaes Witsen, Amsterdam, 1671</i> <a rel="nofollow" class="external text" href="https://archive.org/details/gri_33125008247716/page/n69">(archive.org naming reference)</a>
<bdi><a href="https://en.wikipedia.org/wiki/en:Nicolaes_Witsen" class="extiw" title="w:en:Nicolaes Witsen"><span title="Mayor of Amsterdam (1641-1717)">Nicolaes Witsen</span></a>
</bdi>
18<sup>th</sup> century <div style="display: none;">date QS:P571,+1750-00-00T00:00:00Z/7</div>
<a rel="nofollow" class="external text" href="https://www.telegraph.co.uk/news/2017/04/03/italy-hunts-emperor-caligulas-long-lost-third-pleasure-ship/">Daily Telegraph</a>