system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] What would happen if Elven Ship and Human Ship sailing to the west together?

Since only elven ship are allow to reach valinor, what would happen to both ship? Would the elven ship stuck in curvature with Men or would it just disappear a la bermuda? What if Both ship are connected by mithril chain?
gpt
IIRC, the elves can still travel the straight line that leads West, while men are stuck following the now-natural curvature of the Earth, so from the human's point of view the elven ship would slowly take off into the air and cruise off into the clouds. 

If the ships are connected, the chain pulls on the human ship until *something* breaks, most likely the part of the human ship it's secured at. Unless the human ship was purpose built to suspend it's entire weight by a single connecting point, nothing good comes of the attempt.