User blog comment:Wass12/Translation help 1/@comment-1330314-20110516204324

These terms don't crop up often in the English language, so even a native English speaker could be confused by these. In context, this is what each one should mean:

"Moral vessel": A vessel is a thing you use to carry something else. Here, Eleanor is used to "carry" her mother's ideals and principles towards the people of Rapture.

"Afterbirth": Pretty much the same as rebirth. In this context, Sofia says she and Delta will become insignificant (worthless) after the "rebirth" of Rapture through Eleanor.

I checked the radio messages and haven't seen the expression "beast apart" anywhere. However, in this case "beast" refers to Delta, and means the same thing as "monster". "Apart" here would indicate that he's different to everyone else (i.e. everyone else in Rapture).