Hoddan thought it over soberly. Long before he reached Walden, of course, he could have his own crew so terrified that they'd fight like fiends for fear of what he might do to them if they didn't. But if he could keep the space-yacht also—
He nodded gravely. He liked the new possibility. If it didn't work, there was the first plan in reserve. In any case he'd get a modern space-liner and a suitable cargo to present to the emigrants of Colin. And afterward—
There were certain electronic circuits which were akin. The Lawlor drive unit formed a force field, a stress in space, into which a nearby ship necessarily moved. The faster-than-light angle came from the fact that it worked like a donkey trotting after a carrot held in front of him by a stick. The ship moving into the stressed area moved the stress. The force fields of a landing grid were similar. A tuning principle was involved, but basically a landing grid clamped an area of stress around a spaceship, and the ship couldn't move out of it. When the landing grid moved the stressed area up or down—why—that was it.
All this was known to everybody. But a third trick had been evolved on Zan. It was based on the fact that ball lightning could be generated by a circuit fundamentally akin to the other two. Ball lightning was an area of space so stressed that its energy-content could leak out only very slowly, unless it made contact with a conductor, when all bets were off. It blew. And the Zan pirates used ball lightning to force the surrender of their victims.
Hoddan began to draw diagrams. The Lawlor drive-unit had been installed long after the yacht was built. It would be modern, with no nonsense about it. With such-and-such of its electronic components cut out, and such-and-such other ones cut in, it would become a perfectly practical ball lightning generator, capable of placing bolts wherever one wanted them. This was standard Zan practice. Hoddan's grandfather had used it for years. It had the advantage that it could be used inside a gravity field, where a Lawlor drive could not. It had the other advantage that commercial spacecraft could not mount such gadgets for defense, because the insurance companies objected to meddling with Lawlor drive installations.
Hoddan set to work with the remnants of a tool shop on the ancient yacht and some antique coils and condensers and such. He became filled with zest. He almost forgot that he was the skipper of an elderly craft which should have been scrapped before he was born.
But even he grew hungry, and he realized that nobody offered him food. He went indignantly into the yacht's central saloon and found his seven crew-members snoring stertorously, sprawled in stray places here and there.
He woke them with great sternness. He set them furiously to work on that housekeeping—including meals—which can be neglected in a feudal castle because strong outside winds blow smells away and dry up smelly objects, but which must be practiced in a spaceship.
He went back to work. Suddenly he stopped and meditated afresh, and ceased his actual labor to draw a diagram which he regarded with great affection. He returned to his adaptation of the Lawlor drive to the production of ball lightning.