Corvette

A corvette is a classification of warship in the UNSC Navy, represented by the hull classification symbol FS. Larger than gunboats but smaller than frigates, corvettes are generally the smallest warships designed to conduct regular interstellar travel, and are primarily used for logistics, patrol, and screening efforts.

Characteristics
Corvettes are small combat craft, with a mass between 15,000 to 100,000 metric tons, and a total length of 150 - 300 metres. They are large and strong enough to be equipped with slipspace drives, which allows them to pursue hostile ships into nearby systems, although their small size still makes lengthy voyages impossible. As their miniaturised slipspace drives creates a lot of resistance to travel through, corvettes have a number of crew amenities not available on smaller craft, such as cryochambers for non-essential personnel. They had a small crew, with many having less than 20 sailors and no more than forty for particularly-large corvettes. Their armaments, although they were still comparatively light, were much better suited to defending them against space fighters and light warships. Batteries of naval autocannons and missile pods were a common selection on corvettes, while those particularly well-armed had a MAC that took advantage of their longer length. They were generally armoured with on average 30 centimetres of titanium-A battleplate, which gave them enough protection to withstand glancing blows from light anti-ship weapons, but not much more than that.