There isn't a singular individual credited with the construction of the first spaceship capable of human spaceflight, but rather the achievement was the result of concerted efforts by teams of engineers, scientists, and technicians. The development and construction of the first spaceship involved the collaboration and contributions of numerous experts from various fields. Here are some notable figures associated with the development of early spaceships:

1. Konstantin Tsiolkovsky: A Russian scientist and pioneer of theoretical astronautics, Tsiolkovsky laid the groundwork for spaceflight through his mathematical equations and theories, including the "rocket equation" that describes the relationship between rocket propulsion and spacecraft performance.

2. Wernher von Braun: A German rocket engineer and aerospace engineer, von Braun was instrumental in the development of the V-2 rocket during World War II and later led the team that developed the Saturn V rocket, the launch vehicle used for the Apollo missions that landed humans on the moon.

3. Sergey Korolev: A Soviet rocket engineer and space designer, Korolev oversaw the development of the Sputnik satellites, the first artificial satellites to orbit the Earth, and also the Vostok spacecraft, which carried the first human, Yuri Gagarin, into space.

4. Robert Goddard: An American engineer and physicist, Goddard is considered one of the founders of modern rocketry and is credited with developing the first liquid-fueled rocket.

5. Theodore von Karman: A Hungarian-American mathematician, engineer, and physicist, von Karman played a significant role in the development of supersonic flight and early rocket research in the United States.

These are just a few of the many individuals who made significant contributions to the development of the first spaceships. Space exploration is truly a collaborative effort involving the work of numerous brilliant minds and dedicated teams.