What is the origin of The Orville's registry number, ECV-197? It can be seen on the side of the ship in the opening animations. What does "ECV" stand for in-universe, and why was this particular number chosen?
Address both in and out-of-universe reasons for the name, if possible. (for example does "197" have some meaning to the writers of the show)
As a side note, I noticed that the shuttlecraft carry the same registry number with a suffix. We've seen at least ECV-197-1 and ECV-197-2 so far.