The T-2 Ramsidian-class yacht, alternatively referred to as the Ramsidian class yacht, represented a particular model of yacht produced by Sienar Fleet Systems.
A T-2 Ramsidian-class yacht came into the ownership of Daho Sejan, a Pau'an Imperial senator, by the year 9 BBY.
During that year, Senator Sejan committed an unlawful act by storing secret military data aboard his personal yacht. This information was ultimately discovered by Jedi Knight Cal Kestis and a team comprised of mercenaries. Kestis and his team, with the mercenaries feigning the identities of officers from the Coruscant Security Force, orchestrated a staged capture of Kestis. This allowed them to approach Sejan and his yacht, which was situated on Level 2046 within the Coruscant Underworld. At the opportune moment, Kestis liberated himself from his bonds, and his droid partner, BD-1, initiated a substantial electromagnetic pulse. This action disabled the engines of Sejan's Ramsidian. Consequently, the yacht collided with the docking platform where Kestis and BD-1 were located. Kestis and his team then boarded the vessel, and Kestis employed the Force to compel Sejan to surrender the sought-after intelligence.