This prototype ship made a five-hour test flight in September 2005.

But, of course, this was a prototype ship.

As such the prototype ship was not considered to be part of the class at the time.

There were no 47 mm guns, unlike on the prototype ship.

How soon can you arrange to let me begin construction of a prototype ship?

But there was no sign of what had happened to the prototype ship or the people here.

The prototype ship continued ever downward with deceptive slowness toward the big planet.

What had happened to the prototype space-folding ship?

The Heart of Gold was the prototype ship for infinitely improbable travel.

The androids, after their liberation of the prototype ship, had converted the space for another use.