The Occams-Razor 1

For my creation I created a ship that combatted one of the things I felt really would help man getting to mars... and thats speed and reusable thrusters. Because who wants to be in space for 1.5 months just to get there? So my ship imagined an engine that created thrust with electricity, The thrusters are reusable but not land-able if you want them to get you home. So I made the ringed ships (there are 2, they mirror eachother) to detach from the thrusters and be capable of landing on mars, becoming a rover or remaining air worthy for exploration.

It doubles up on resources you can bring, but it also ensures that if some horrible catastrophic failure happens of any of the 3 major parts, that any part could finish with a planet landing is pretty great insurance-- for the mission. But also, it just looks really cool, and I would really want to land in a badass looking ship, kind of shallow but hey, you're in it for 1.5 months. Best to look like space warriors