The Voynich Manuscript as an Iberian-African Voyage Record

[Bluetoes101]

That's true, though is it not odd that more or less 60% of "k" are "ok" and 60% of "t" are "ot", yet in other common(ish) pairings the stats are not like this. I think it would at least make it hard to use the first comparison as a "for" argument and not have the others be "against". . but I do tend to default to thinking of the text as a code with symbols rather than a language so this may make no sense at all for language, as you allude to. 

Another thing that would be odd, in my eyes.. more "code" than "language" would be this