The Serenity is a Firefly class transport vessel. Firefly class vessels are an older model, but they are durable and reliable.
Serenity - Firefly ship Art Print by Elixir
Wash: [about River] Psychic, though? That sounds like something out of science-fiction. Zoë: We live in a spaceship, dear. Wash: So?
Firefly ship ornament BRAND-NEW Serenity Firefly Holiday Ornament by Ripple Junction Starship NIB Christmas Ripple Junction Other