The USCSS Nostromo (reg. 180924609) was a $42 billion (and adjusted) commercial towing vessel owned by the Weyland-Yutani Corporation, a Lockmart CM 88B Bison M-Class starfreighter used as a commercial hauler between Thedus and Earth. The Nostromo was 243.8 meters in length, 164.6 meters wide and 72.5 meters in height. It also carried (or rather pulled) a massive refinery behind it for processing ore on the long trip to Earth.