This cannon is one of many interesting items which can be seen below deck on the USS Constitution
<a href="//commons.wikimedia.org/w/index.php?title=User:Education_Prof&amp;action=edit&amp;redlink=1" class="new" title="User:Education Prof (page does not exist)">Education Prof</a>
<span class="int-own-work" lang="en">Own work</span>