Thanks for the topic, NinjaToes. When I was looking for some other artillery information earlier in the week I came across a bunch of these Henry Morgan cannon articles, and I bookmarked a few.
http://www.pasthorizons.com/index.php/archives/02/2011/cannons-from-the-lost-ships-of-captain-morganBoquete Times, Panama
Fire power: Archaeologists examine the decayed cannons that are believed to have come from fearsome bucaneer Henry Morgan's ship, the Satisfaction, which sank in Panama in 1671
Daily mail, UK
Raising a swivel gun