ONLY because I had all the parts already in my backpack, pirate-class galleon only sails, rudder, armor, figurehead and numerous canons, horns and anchors, did I choose to consolidate these items into a single slot in my backpack saving much precious space. I did so by purchasing a pirate-class galleon to equip!
Mind you, I don't need this galleon. But it was dirt cheap compared to the naval-class frigate I bought and can not yet utilize due to being too low a level.
As for me, I'll just keep collecting ships.