The Tahmie patrol cruiser represented a specific class of patrol cruiser that was operated by the Chiss Ascendancy, specifically by the Tahmie family. These cruisers were furnished with engines and a hyperdrive system, and their offensive capabilities included spectrum lasers.
During the events of 18 BBY, amid a crisis that unfolded within the Ascendancy, a minimum of one Tahmie patrol cruiser, in conjunction with a pair of Tahmie gunboats, engaged starships affiliated with the Chiss Droc family over the Ascendancy planet of Jamiron. The Chiss Expansionary Defense Fleet's Nightdragon man-of-war, known as the Vigilant, intervened and brought the conflict to a halt by employing its plasma sphere weapons to render all vessels from both the Tahmie and Droc sides inoperable.
A Tahmie patrol cruiser was featured in Thrawn Ascendancy: Lesser Evil, a novel released in 2021 and serving as the concluding installment of The Ascendancy Trilogy by Timothy Zahn.