In the episode "Where Silence Has Lease", Commander Riker said that the Yamato
had the registry NCC-1305-E.
In the episode "Contagion", a display graphic gave the registry of the Yamato
as NCC-71807. It was reported that this registry was on the saucer of the starship.
For a long time, it was not possible to verify this report. Now, with the blue-ray, it's possible to do so. This is an image from Memory Alpha.
By zooming in, I can barely out make the ship's name - USS Yamato
. Then, I can make out the registry, and, well, it's not NCC-71807. It's something else.
I read NCC-7 80x.
The numeral one appears to be missing.
The last digit is not the same shape as the first digit. I keep seeing 4.
So, now we have three registries for this ship.
I don't know what more to say. I feel this is a mess.