The soveirgn_retexture.zip file you have requested: Ship Textures / Federation / Soverign retexture - 2.94mb is not available. Perhaps try browsing all files for the game Star Trek: Bridge Commander and upload any files you want to share or are missing. This is the only information we could locate:
High res and spec maps for a soverign class. There's nothing specific in the readme, so I'm really not sure who's soverign this belongs to or who made them. USe at your own risk.