THE EVACUATED AIRSHIP OR VACUUM AIRSHIP IS A CONCEPT FOR A LIGHTER THAN AIR FLIGHT VEHICLE WHICH OBTAINS A REDUCED EFFECTIVE DENSITY BY HOLDING A SUSTAINED VACUUM WITHIN A RIGID STRUCTURE. BUOYANCY IN AIR IS ATTAINED BY CREATING A LARGE ENOUGH STRUCTURE TO DISPLACE A MASS OF ATMOSPHERE GREATER THAN THE MASS OF THE STRUCTURE WHICH IS NEEDED TO SUPPORT THE LOAD OF ATMOSPHERIC PRESSURE. SUCH A VEHICLE HAS GREATER POSSIBLE LIFT THAN TRADITIONAL METHODS AS WELL AS NO RELIANCE ON A LIFTING GAS TO PROVIDE THE BUOYANCY. MUCH AS A BOAT FLOATS ON WATER REPLACING WATER DISPLACED BY A RIGID STRUCTURE WITH AIR A VACUUM AIRSHIP REPLACES THE ATMOSPHERE WITH EMPTY SPACE USING A RIGID STRUCTURE. THE MAIN IMPEDIMENT TO CONSTRUCTION OF THE EVACUATED AIRSHIP IS THE STRUCTURE WHICH MUST BE STRONG ENOUGH TO SUPPORT ATMOSPHERIC PRESSURE WHILE HAVING LESS MASS THAN THE VOLUME OF ATMOSPHERE DISPLACED. THEREFORE THIS PROJECT AIMS TO OVERCOME THE AFOREMENTIONED DIFFICULTY BY IMPLEMENTING CURRENT ADVANCEMENTS IN MATERIALS AND DESIGN METHODS AS WELL AS DEVELOPMENT OF NEW DESIGN METHODS FOR FURTHER IMPROVEMENT. ADDITIONALLY THESE THEORETICAL DESIGN TOOLS AND ANALYSIS WILL BE TESTING FOR VERIFICATION OF THE THEORY AND MODELS PROVIDING GREATER CERTAINTY IN THE DESIGN AND APPROPRIATE MARGINS. THE FINAL GOAL OF THE PROJECT IS A VERIFIED STRUCTURAL DESIGN FOR A VIABLE VACUUM AIRSHIP FOR MARS.