Didn't my reply to the draft #11 go through?  I paste it just in case.

@vector-unfold

   says "On the first call to f, the state's value is zero", should be "the state's value is seed."

@vector-cumulate

   it can be a bit more verbose.  How about something like this:

   Like @vector-fold, but returns an @vector, which has the same length of @vec, and

   the 0-th element is the first result of (f knil e_0), the next element is the result of (f (f knil e_0) e_1) and so on.

@vector-take-while

@vector-take-while-right

@vector-drop-while

@vector-drop-while-right

   missing close paren

   for take-*  : shouldn't it be "the longest"?

@vector-index

@vector-index-right

@vector-skip

@vector-skip-right

   It's obvious, but just for completeness: Add "Returns #f if there's no such element"

@vector-any

   Should return the first true result of pred?, not the element.

@vector-every

    Should return the last true result of pred? if all elements satisfy it, not the element.

@vector-filter

@vector-remove

    missing closing paren

@vector->vector

vector->@vector

   Don't they support optional start/end arguments?

The library names:

The distinction of (srfi 160 base) and other srfi 160 library is explained under "implementation".  So it's not clear if it's just the reference implementation's strategy, or the library names are a part of the specification that all conforming implementations should follow.  If it's indeed the case, maybe we can have "Library names" section after "Notation".