User blog comment:Ryan Space Bound/Grog/@comment-4587184-20111228203421/@comment-1140008-20111228210324

Yes. Grog is a very rare ship material used to get Rank V hulls. Rank V hulls were on test for awhile, but pulled back for development. Grog never appeared though (and since its a requirement to have grog to make Rank V Hulls, nobody got Rank V) It is not currently on test.