This is a cannon from the game Final Fantasy 14.
I am going to 1:1 this model in Blender and then add some changes in a new version to create a cannon specifically for my Ironsong (https://www.artstation.com/artwork/qAQr8z) model. Ship cannons are usually a good bit different from land based ones so I am using this as a starting point for that. Plus practice at working from a reference is a boon.