Supply ship

A supply ship is a type of vessel used by various powers. Like a freighter, a supply ship's primary mission is to move supplies and cargo. However, unlike a freighter, a supply ship is attached to an "official" or "military" organization, such as Star Fleet or the Cardassian Central Command, and the cargo they carry are of an official and/or government nature. A supply ship attached to a military fleet, for example, would carry spare parts and materials needed to restock and resupply the other ships in the fleet as needed.