There is a similar question about this for 3.5e, but can a permanent teleportation circle be created on a large moving vehicle? For example, a sailing ship, or a wide portable floor?
The spell says:
You can create a permanent teleportation circle by casting this spell in the same location every day for one year. You need not use the circle to teleport when you cast the spell in this way.
To further illustrate the question, here are sub-questions:
What happens if I cast the spell on the vehicle for a year (and it is unmoving), and then the vehicle moves? Can it still be used as a destination point?
Can I create a permanent TC on the vehicle if it is never in the same place twice in the first place?
