CAA Heavy Burden (CFM-88) was a human civilian Springhill-class mining vessel commissioned at some point in the early 26th century by the Colonial Military Administration. After the start of the Human-Covenant war, the ship was taken by the UNSC and re-purposed as a support vessel. The ship was disabled and evacuated during the Battle of Kholo. By 2558, the vessel was slowly being torn apart in the gravity well of an gas giant.


While the ship was initially outfitted with mining machinery and industrial equipment for its peacetime purpose, at the time of the Battle of Kholo, it had enough equipment to not only deploy ordnance but to manufacture it on-site. An example of this is the HRUNTING Mark II [D] Exoskeleton under construction on one of the vessel's starboard decks. The vessel was extremely large, even by military standards, with most of its tonnage in its forward decks over which the bridge was located. Two additional decks were located above either side of the rear engines.