The Phosiorate-class was an advanced tactical strike fighter designed by Qi'natc Starship Productions as a next-generation mainline strike craft for the Roccho Navy. The Phosiorate-class would replace the Reidao-class interceptor, and incorporated technologies and capabilities made possible by scientific studies passed down from GACIAF's Office of Science and Innovation Control, OSIC, as the engineering and scientific data discovered from analyzing recovered Shadow Fleet ships was made available to the public. Qi'natc SP's own engineers took advantage of information in the GACIAF documents to significantly improve sensors, propulsion, composites and materials, and other systems, leading to a strike craft decades ahead of most competitors.

The Phosiorate-class began official development in the early 48,830s, with the main team based on the Qu'in Sera shipyard complex in the Talaisi System. Secondary teams in Qi'natc SP's production sector on Stykeer Station and in facilities in the Qi’i Opua system took over some development tasks to lessen the workload of the core team. Eventually a process was established with production increment builds being assembled at Stykeer Station with systems built at the Qi'i Opua and Talaisi facilities, as well as some components from other Qi'natc SP stations that manufactured less common technologies. Testing and integration would be done in the Toris System, with most activities related to the Phosiorate development program kept classified or concealed. Initial prototype strike craft began testing in 48,852 ACT, with sixteen increments following until the final production strike craft design was approved and the Qu'in Sera shipyard complex took over mass production. The Roccho Navy would procure approximately 2.64 million Phosiorate-class ships from 48,861 ACT to 49,066 ACT when the Phosiorate's replacement was well into production. The ship became a symbol of the Roccho's technological advancement, and was one of the nation's most important assets during the Astachez Civil War.

The Phosiorate-class appeared to be a simple design. The fighter had a single ion thruster, the HVIAp-30 from Rivenacht, a Qi'natc SP subsidiary, as well as two laser cannons and two missile launchers. What the strike craft lacked in quantity, though, it made up for in quality. The Phosiorate-class had a maximum linear acceleration of 13,890 g's, making it the fastest TAUFOG starfighter in Ivesceel. The vessel also was highly maneuverable, with both wide thrust vectoring and advanced inertial control systems for precise adjustments to the ship's heading. The Phosiorate-class also had a rating 4.1.16 FTL drive, able to achieve speeds close to 14.5 million c. Again, this exceeded the capabilities of any TAUFOG strike craft in Ivesceel, allowing the Phosiorate-class the ability to easily evade defensive formations or escape attacks. For offense, the Phosiorate-class's twin Qi Sty-m3 laser cannons had an effective yield of 1.33E+12 Joules per shot, over twice the energy of competing systems such as the TY60-series produced by Themix Industries for their Taorith-class strike craft, a much larger vessel than the Phosiorate-class. The Phosiorate's missiles, the Type 602-Eir/Xeu from Iquallo Engineering, also vastly exceeded the power of competing ordnance. Paired with advanced shields, including particle and energy types, thick armor plating, and the mentioned mobility and maneuverability, the Phosiorate-class was easily capable of defeating any opposing TAUFOG-built strike craft, often even if the opponent had more numbers.