MarsGuard Sioux Class Monitor Class History Mars needed ships. Any ships would do it seemed at the beginning, and MarsGuard was well aware that the EA had a few Nova Alpha hulls sitting in mothballs, and the EA was fully intent to just let them sit there. Plans were drawn up if the EA could ever be persuaded to part with one of these hulls, though all involved knew it was pretty much an impossibility that a Nova class Dreadnought of any model would ever enter service with a nation other than the EA. Never-the-less, plans for the MGSC Sioux were completed at the end of 2266. Sioux Class SCS