One of the rare ships to undergo a name change in a series. The Rocinante is a commandeered Martian (MCRN) vessel, a single fast-attack corvette, by a crew helmed by Captain James Holden, formerly the XO or executive officer of The Canterbury, during an escape from an unknown enemy combatant in the series The Expanse (2015-present).
The lethal craft's first appearance came in The Expanse, Season One, Episode 4, CQB or Close Quarter Battle.
The Rocinante, named after Don Quixote's horse, was originally called the Tachi until it underwent its official name change in The Expanse, Season One, Episode 6, Rock Bottom here.
The Rocinante would serve as the home of James Holden, Naomi Nagata, Amos Burton and Alex Kamal for the run of The Expanse. And what a machine it is. It is fixed with a PDC (point defense cannon) array. It is one mean, lean, slick, state-of-the-art, bad ass, Martian-designed, piece of machinery.