OK, I'm trying to determine what I thought would be a relatively easy thing: the length of the DY-100 SS Botany Bay. I quickly found 6 different sources and each one gives a different dimension. Why the discrepancy? One source states 80m and another states 140m!
Here are the various lengths given depending on the source:
Daystrom Institute Technical Library a Star Trek website
Pre-Federation Database - DY-100 Class
Ex Astris Scientia - Earth Ship Classes
DY-100 class information - The Full Wiki
DY class - Star Trek Expanded Universe - Fan fiction, RPG, fan films
If the photo attached is an indication, and the E is 947' then the most likely correct length of the BB I think is 100m or about 328'. This also takes into account that the BB is in front of the E at a relatively close proximity; although with a fairly wide angle shot like this one it shouldn't affect scale between the 2 vessels very much.