The SCR-class Fast Battleship is a fast, lean warship, of the Covenant Navy. Originally devised close to the end of the War of Beginnings, this warship is generally considered an improvement over the Blockade Runner, being fast, well armoured, and well armed. Such vessels often wreaked havoc in the rear-lines of the San'Shyuum, and made themselves a menace. In the early days of the Covenant, these vessels were a vital to expansion, serving as the forefront of their relic hunting and conversion missions, but as the balance of power shifted within the Covenant, the San'Shyuum classified the vessel as an Examiner, only allowing these powerful ships to be used at their discretion. As powerful warships became less popular compared to more ubiquitous vessels, they faded into obscurity, with no more than two even being seen during the Human-Covenant War.
The vessels serve as agile hunters, carrying heavy armour and weaponry, while being fast and highly mobile. While lacking the raw-survivability of the larger SCT-class Battleship, or the versatility of the CAS-class assault carrier, they serve as hunter-killers, but thanks to the high-speed, energy projectors, and acute sensors, it can also operate in relic recovery roles, though it often requires an attendant fleet of supply and occupation vessels. Those few lucky enough to serve on these vessels note that there are strange elements in its design, with empty bays, or vacant weapon mounts, and other oddities, suggesting that elements of the ship are missing, absent, or removed. Such mysteries are known only to a select few, guarding the terrible knowledge that such vessels were experiments in pursuit of something far greater.