High Guard ships are technically of Vedran (and therefor alien) design.
The titular ship from Andromeda is—along with most of the other ships in the Home Guard fleet—a huge aversion of this. Colorful, shiny, curvaceous, and almost frail-looking. The background materials took care to explain this, in that generally the only thing to get through its defense net to hull proximity would be a guided kinetic weapon. 'Frail' structures provide less of a target, more opportunity to deflect the weapon, and less mass to get turned into high-energy plasma by a successful strike.