As resupply vessels, Hajen-class ships had to constantly shuttle between fleets and bases, carrying vital supplies, such as food, water, Bacta, fuel, spare parts, and Tibanna. To perform their mission, these ships were equipped with fast Class 0.9 hyperdrives and capable of carrying 300,000 metric tons of cargo.
Hajen-class ships were highly automated, requiring a small living crew to operate. Its standard crew numbered only six beings and a large number of droids, and a mere two could serve as a skeleton crew. The vessels were completely unarmed, and relied on ships such as the Sacheen-class light escort for protection.
The Hajen-class fleet tender was built on the same basic hull and systems of the Sacheen-class. This practice of using the same basic design for multiple configurations was so successful that it was adopted for all later New Class ships.
While New Class ships were capable combatants, they were also relatively small and sacrificed cargo space for functionality, preventing them from carrying enough supplies to operate for extended periods of time; no New Class ship carried more than five months' worth of consumables. Hajen-class fleet tenders acted as resupply ships to extend a fleet's running time.