Not to worry the Nostromo isn't a Yugo compared to Prometheus

Specifications USCSS Nostromo (Lockheed Martin CM-88B "Juggernaut-class" Starfreighter) Complement: 7 (3 officers + 4 crew members) Displacement: 50,000 t (Standard); 45,000 t (Light); 63,000 t (Full Load) Dimensions: Length: 1,095 ft (334 m); Beam 705 ft (215 m); Draft 320 ft (98 m) Velocity: 0.42 LYSD (Unladen) / 0.12 LYSD (Towing heavy cargo) Acceleration: 27.9 s Rest - Onset Critical Momentum 8.9 s Onset Critical Momentum - Hyperdrive Engage 6.5 s 1c - 24c 8.5 s 24c - 68c 15.5 s 58c - 153 c Endurance: 14 Months (Standard) / 24 Months (Maximum) Primary Power System: One (1) Laratel 2.8 terawatt WF-15 fusion reactor Faster Than Light Propulsion: Four (4) Yutani T7A NLS stellar drive towers Sublight Propulsion: Two (2) Rolls Royce N66 Cyclone thrust tunnels w/ Bi-Polar vectoring; 7,290,000 short tons force (64.9 giganewtons) thrust each Two (2) Weyland L46 chemical maneuvering engines; 850,000 short tons force (7.6 GN) thrust each One (1) Yutani J38 auxiliary thruster module /w Two (2) Lockmart TL-30 thruster groups Primary Logic System: MU-TH-R 182 2.1 terabyte AI Mainframe w/ 2.0 terabyte MU-TH-R 146 Backup Mainframe Operating System: OAM (Overmonitoring Address Matrix) Release 2.2 with 2120 Patch Sensors: Two (2) 2-Meter aperture telescopes capable of optical, spectrographic and infrared resolution Gas Chromatograph Centimetric Navigation and Landing Radar Synthetic Aperture Ground-Mapping Radar Hyperspace Mass Counter Weapon Systems: (None) Embarked Craft: Two (2) Starcub-Class Shuttlecraft The design of the Nostromo is credited to illustrators Ron Cobb and Chris Foss. Ultimately Chris Foss' highly organic visions of the spacecraft were discarded in favor of Cobb's NASA-like utilitarian renderings. Ridley Scott made his own design contributions as well, adding most of the cathedralesque "refinery" portion, which dominates the craft on screen. Beneath Cobb's blueprint elevations of a late Nostromo rendering, he specified: BASIC LOCKHEED CM 88B BISON TRANSPORTER FRAME MODIFIED AND FITTED WITH A YUTANI T7A NLS STELLAR DRIVE THE ORIGINAL SATURN J3000 ENGINES HAVE BEEN REPLACED BY 2 ROLLS ROYCE NGG CYCLONE THRUST TUNNELS WITH BI-POLAR VECTORING FOR MID LINE LIFT FUNCTION EACH POWER PLANT DEVELOPING 7,250,000 TONS THRUST (14,500,000,000 POUNDS) GIVING A HIGH IMPULSE TOTAL OF 14,460,000 TONS. (The Book of Alien, Titan Books 1979)