Mercury Transfer Module (MTM) for propulsion, built by ESA Mercury Planetary Orbiter (MPO) built by ESA Mercury Magnetospheric Orbiter (MMO) or Mio built by JAXA During launch and cruise phase, these three components are joined together to form the Mercury Cruise System (MCS).
Mercury Transfer Module (MTM), pohon, postavený ESA Mercury Planetary Orbiter (MPO), postavená ESA Mercury Magnetospheric Orbiter (Mio), postavená JAXA Počas štartu a letu, tieto tri komponenty sú spojené, tvoria Mercury Cruise Systém (MCS).