Billy Meier in the Great Mothership

How big is this spaceship, Semjase?
Semjase:
74. It's big, it's even very big, and it's the largest of its type.
75. It's a truly special ship which embodies all the technologies known to us.
76. Altogether it's its own perfect world, a world that's able to fly.
77. In itself it contains a complete and inhabited city with 141 000 inhabitants.[5]

78. Everything needed for living can be produced inside the ship itself, and it's absolutely independent of any thing of any kind from outside its boundary.
79. This spaceship represents our latest development, and has been working together with other ones of this same kind for four years now in Earth's chronology.
80. They are finding useful applications as self-sustained expeditionary ships and for intergalactic order