The Starship

It consists of everything required for a Mars travel (6-9 months) Inside it will have all amenities, living space, kitchens, gym, experiments area, observation floor, many things in the upper half

In the mid section will be a bit of cargo, although most cargo will go by individual starships

Lower half will have the fuel tanks, engines, Landing legs and all necessary for an Incredible Journey

The Starship half vertically will have heat shields, to safely reenter Mars atmosphere