General Consensus on Objects/Locations?

There are a lot of pages on GB that can easily be either a location or object. Pages like Cruise Ship (location) make more sense to me as objects (I had a similar submission for a ship as a location months ago and it got rejected). Other pages like the Pillar of Autumn and Volcano (both objects) seem too big in my opinion to be considered objects. Is there some sort of guideline for how big something has to be before it becomes a location?

This is my proposal. If it can hold 40 elephants, it must be a location.

Actually, for the cruise ship, I think it makes a lot more sense as an object, well because, ya know, cruise ships move. For it to be a location, I think it needs to have a stationary position.

"While it's possible to have a mobile location, if its primary role is that of transportation, it should be an object."