A ship sent on a five-year mission far from home needs room for scientific teams, analysis, equipment, and potentially families as well as cruiser armament. Spare volume is a capability in its own right because a solo explorer must carry the people and resources needed to meet unforeseen problems. Solo exploration remains a questionable approach in this reading, although the Galaxy's separable saucer and main body provide one way to divide risk and capability within a single ship. The result is an exploration vessel with unusually broad requirements, rather than a battleship made oversized.
Notable Point · 1:27-3:08
An exploration cruiser needs more than weapons space
Long-range exploration requires room for scientific work, families, and the capacity to handle problems far from home.