Visually, Prison Battleship is a time capsule of the early 2000s. The animation is cel-shaded and gritty, with a darker color palette that suits the claustrophobic interior of the battleship. The character designs by Kagami are iconic within the eroge community. Lieri Bishop, with her sharp features, rigid posture, and flowing blonde hair, perfectly embodies the "Ice Queen" archetype. Naomi Evans provides a contrasting visual flair with her dark skin and ponytail, representing a more physical form of authority.
(with a very specific disclaimer)
If a modern navy sought a floating prison, it would use a converted container ship (unarmed, non-combatant, marked with red cross-like prison identifiers). To arm it is to announce that one’s own prisoners are legitimate targets—a policy no rational state would adopt. prison battleship