So. After doing extensive rewatching for research for a fic. I've realized Rocky does not have as many tunnels in the ship as I thought.
He has a chamber in the dormitory. A chamber around the pilot seat (which is only built AFTER the Moment scene, because he was just strapped in his ball then) and the larger tunnel in between the Central Hub and the Analytical Capsule. No other place in the ship has tunnels. He uses his ball to get around.
Poor guy went from massive entire ship to himself to essentially a hamster ball habitat.













