Mr. Spaceship is a science fiction novella by Philip K. Dick, first published in 1953.

Humanity is at war with "Yuks," an alien life form which does not use mechanical spaceships nor constructions. Instead, it relies on life forms.

The war with the Yuks from Proxima Centauri was claimed to be a stalemate but they were really winning. The mine belts they laid seemed to propagate themselves and were slowly strangling Terran planets.

How did they do that? What was their secret? The answer was baffling and the best human minds could only conclude that their ships and mines were somehow alive.

So, the next desperate step was to ask "If they are using organic ships, why can't we do the same?". Thus Mr. Spaceship was conceived and carried out. But will a conscious warship do what the generals wish? 

Mr. Spaceship was first published in Imagination Stories of Science and Fantasy, January 1953.

Philip Kendrick Dick (1928-1982) was an American science fiction author. Dick explored sociological, political and metaphysical themes in novels dominated by monopolistic corporations, authoritarian governments, and altered states.

In addition to 44 published novels, Dick wrote approximately 121 short stories, most of which appeared in science fiction magazines during his lifetime.

Although Dick spent most of his career as a writer in near-poverty, ten popular films based on his works have been produced, including Blade Runner, Total Recall, A Scanner Darkly, Minority Report, Paycheck, Next, Screamers, and The Adjustment Bureau.

In 2005, Time magazine named Dick one of the one hundred greatest English-language novels published since 1923. In 2007, Dick became the first science fiction writer to be included in The Library of America series.