This cannon is a "stave" cannon...that is, it is made of long narrow bars of bronze bound together like a barrel. (I know, it looks like steel in the above pic, but guys...look at the steel in the anchor! This cannon is made from much more corrosion resistant material! They are really interesting since stave cannons are usually "breech loaded". The lion, of course, is an old old symbol of England.
Thus endeth the lesson for today.