The plan, at least as originally described is to have (at least) three variants of Starship: One for passengers, one for bulk cargo, and a tanker. Each would b

The plan, at least as originally described is to have (at least) three variants of Starship: One for passengers, one for bulk cargo, and a tanker. Each would be launched atop the common Super Heavy booster. Depending on the trip, a passenger Starship would do an on-orbit refuelling from the tanker variant.