The Langford-class frigate is a sleek, mid-sized Ancient warship developed during the height of the Lantean–Wraith War. Designed as a fast-response vessel, the class balances agility, firepower, and advanced Ancient technology in a frame smaller than the Aurora-class battlecruiser. The ship's class was named by the Tau’ri in honor of Catherine Langford, whose dedication to the Stargate program laid the groundwork for modern exploration.
The Kawalsky, discovered derelict in a dormant repair dock in a cave in Eversham by SG-24, is the first known surviving example of this ship type. Its name honors Major Charles Kawalsky, an early member of SG-2 whose life was lost defending Earth during one of the SGC’s first encounters with the Goa’uld.