>>6104826We don't know for sure. He said "almost crystalline like." That could mean it merely looks like crystals. For all we know the Gelenostrians merely use seed crystals to grow their ships and are crewed by smaller xenos inside them. Or it could be merely an aesthetic choice and they could be conventional shielded metal crafts in the shape of crystalline structures. Or they could be metal crystals.
Nevertheless, the fact that they are all a single monoculture of a single class/design of ship that nevertheless vary in size...
>(while you note deviations in size, they could all be roughly classified as belonging to a singular class.)...It sounds very much like an organic bioship type of scenario with juveniles and adults in a pod or perhaps akin to young men and older warriors in a warband.