Also, Subspace Vortex, also from Weapon Zero, doesn't seem to be able to be equipped to Azati Prime, the Xindi Aquatic Cruiser, Xindus, Diaspora, the Xindi Reptilian Warship, or the Xindi Insectoid Warship (I.e. despite saying that it can "only be purchased for a Xindi ship" it can't be purchased for any Xindi ship other than Weapon Zero or the generic Xindi Weapon).
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