This mod is not known to work with the latest version of Kerbal Space Program. Proceed with caution.
In vanilla KSP boarding and EVA a command module doesn't change that part's mass. This mod modifies this behavior, now your command modules get heavier and lighter depending on the Kerbals inside. This can have a significant influence on your craft as a single Kerbal weights almost 100 kg. Especially rovers might need a different design for their now heavier passengers.
In the VAB & SPH all modules which can house Kerbals get an additional slider in the context menu to preview how the CoM changes depending on the number of Kerbals onboard. You can also change the Kerbal's default mass in the config file which might be useful for underwater play and adjustment for RSS & RO.
Raw stats are from the beginning of time until now. Each follower and download entry represents one hour of data. Uneventful hours are omitted.