The Sigma Shipyards Epsilon-class Heavy Shuttle, often called simply a Heavy Shuttle, is a light freighter built by Sigma Shipyards as a larger version of the Alpha-class shuttle. Although slightly less maneuverable, the Heavy Shuttle has replaced its smaller cousin in many systems; its larger energy and cargo capacity allow for more jumps with more cargo. Like the Alpha-models, Epsilon-class shuttles have been in production for hundreds of years, and are used across much of Federation space by independent traders.