The Saturn V-D was a conceptual booster with the ability to launch three times as much payload as the Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

n Energia

Energia

Energia was a Soviet rocket that was designed by NPO Energia to serve as a heavy-lift expendable launch system as well as a booster for the Buran spacecraft. Control system main developer enterprise was the NPO "Electropribor"...

 booster. Studied in 1968, it was considered to be the mightiest of the proposed varitions of the Saturn V

Saturn V

The Saturn V was an American human-rated expendable rocket used by NASA's Apollo and Skylab programs from 1967 until 1973. A multistage liquid-fueled launch vehicle, NASA launched 13 Saturn Vs from the Kennedy Space Center, Florida with no loss of crew or payload...

 rocket, rehased as one of the boosters from the Boeing

Boeing

The Boeing Company is an American multinational aerospace and defense corporation, founded in 1916 by William E. Boeing in Seattle, Washington. Boeing has expanded over the years, merging with McDonnell Douglas in 1997. Boeing Corporate headquarters has been in Chicago, Illinois since 2001...

 1967 Saturn studies and utilizing the stage and a half Saturn V-C

Saturn V-C

The Saturn V-C, was just like the Saturn V-B, studied in the same year as the V-C, except it would use a S-IVB third stage to get a payload into a higher orbit. A Centaur fourth stage was optional for deep space missions.- References :...

, four 100ft tall SRBs, and the ordinary second and third stages of the original Saturn V

Saturn V

The Saturn V was an American human-rated expendable rocket used by NASA's Apollo and Skylab programs from 1967 until 1973. A multistage liquid-fueled launch vehicle, NASA launched 13 Saturn Vs from the Kennedy Space Center, Florida with no loss of crew or payload...

. This booster never flew, but if it had been manufactured it would have had the capability to launch all the necessary components for a space station

Space station

A space station is a spacecraft capable of supporting a crew which is designed to remain in space for an extended period of time, and to which other spacecraft can dock. A space station is distinguished from other spacecraft used for human spaceflight by its lack of major propulsion or landing...

in one shot.