As the war with Romulus escalated, the UESPA-Andorian-Tellarite Coalition found that they needed a cheap, fast, and versatile ship that could act as both a scout and a destroyer. The Shiratsuyu was the answer to this need. It was comprised of modified (3rd generation) primary hulls taken from Pollux, Bonaventure, and Patton class ships of the 1st and 2nd Generation of UESPA starships. These ships were recycled into a large fleet of these scout-destroyers and thus their NCC numbers were reused (with a letter after the number to indicate A, B, C, etc. use of the NCC number).
The main engine of the ship was one LN-22 high-power warp nacelle.
They were very effective against the Romulan forces and helped turn the tide of the War.