Clock from a ship(?)

Hi - I’m trying to find anything I can about this clock. It looks to me like it belongs on a ship? But I know very little about naval vessels - or clocks, for that matter… any ideas?
Thank you!

It’s 7” (18cm) in diameter and 2 3/4” (7cm) deep. Appears to be brass. Looks like the frame unscrews, but I can’t budge it. Can’t find any signatures on the face or the case.

 

Your last picture here kind of looks like the threads might also have gotten crossed.....look towards the left side.....wondering if letting a few drops of '3 in 1' oil sit along those threads might help it loosen up....all around....let it sit for a good couple of days....at least I would say! UNLESS there are others a bit more knowledgeable than I who might have other/or better suggestions!! Can you see inside with a small flashlight?? Or is it just an empty housing??

 

Keywords:
Ship's Bell clock

Google Img Search-->

Not sure about the Roman numerals and simplistic face on yours, but I don't know squat about them...

 

I just happen to have a bottle of 3-in-1 right here! It does have the inner workings (and some spider webs) inside. Good eye, catching the crossed threads! I’ve never noticed that.

 

I did an image search and it just came back with a bunch of standard clocks.
I didn’t know anything about them either, but I just watched a YouTube video about them, and wow… ship time-keeping is rather complicated.