Star Trek: 10 Things You Didn’t Know About The Duras Sisters
9. Ship of Convenience
The Star Trek Customisable Card Game says it's the IKS Cha'Joh while the PC game for Generations calls it the Q'uarath. There's even a third possibility thanks to the HeroClix Tactics game that it might be the IKS Toral. Whatever the name, it is a D12 Bird of Prey and would ultimately be the literal vehicle of the sisters downfall.
The sisters use a Bird of Prey for their antics in DS9 and TNG following the events of Redemption. Television and movie budgets mean that the bridge seen in Firstborn is not on the scale seen in Generations but given the sisters' renegade status it is highly likely to be their only option. Based on its size, the sisters' Bird of Prey was equal in size to a B'rel Class (sadly not a B'urrell Class), the smaller of the two types in service. According to Memory Beta, the Bird of Prey commanded by Klaa in The Final Frontier was also a D12.
It would also make an appearance, named the Cha'Joh in the DS9 comic Lightstorm which is set in 2370, placing it roughly in TNG's final season. The Cha'Joh secretly enters the Gamma Quadrant through the Bajoran wormhole, where the sisters are responsible for leading an attack on a Federation colony and would take Dr Bashir prisoner.
While they would escape it would be back to the Alpha Quadrant and a date with fate in the orbit of Veridian III.