The Salvoxia was a Talaxian freighter.
At some point in the late 23rd century, the Salvoxia suffered a cascade failure. System after system failed, and eventually, the life support generators began to fail one by one. There wasn't enough air to sustain the whole crew, so they began to draw lots, hopefully awaiting rescue, which never came. Thus the entire crew eventually asphyxiated. The Salvoxia drifted in space for eighty years until it was discovered.
During a shipwide power loss aboard the USS Voyager, the Talaxian Neelix, Voyager's chef, recounted the Salvoxia's story to Tuvok, the Chief Tactical Officer. (VOY: "The Haunting of Deck Twelve")