Commissioned by the Prophets near the end of the Human-Covenant War, the Laktran-class Frigate was used exclusively by the Jiralhanae. Despite conforming to more traditional Covenant aesthetics, the ships were built at the Thrakakrathak Shipyards above Unmoving Virtue, and completed just before the outbreak of the Great Schism. Though one or two fell into Sangheili hands, for the most part the Separatists were content to simply destroy them - innovations and upgrades provided by human scientists allowed their own, older ships to quickly surpass the newer but inferior Jiralhanae frigates in manoeuvrability, offensive and defensive systems, and slipstream navigation.