Not cannons. Carronades. Short range guns, more for close range battering, rather than long range gunnery. Mighty cool though, thanks for posting.
Thanks much, I was wondering about the shortness of it.
I thought they looked like carronades.
Which means they were probably on the Fore deck or After deck and they used Grape shot mostly. That could also explain how three of them were on a section of the ship that “broke off”.