GoA concept - Invasion

Concept art for the roleplaying game Garden of Athena, which one of my good friends is brewing on.

Space opera with greeks, launching invasions on barbarian planets...for the good of the Gods, of course...

A huge carrier-scaffold, mounted with invasion barges. What cannot readily be discerned from this rather quick mock-up is how the barges themselves will be sort of based on greek triremes.