The Dark Design by Phillip Jose Farmer

The captain and the first mate were flabbergasted.

Frigate said, “When did the mysterious stranger talk to you? And why didn’t he tell Tom that you were in oh this?”

Nur shrugged thin shoulders.

“He appeared shortly after his visit to Tom. I don’t know exactly when. As for the second question, I don’t know the answer.

“I do suspect that the Ethical may not be telling the truth. He may be lying in that he is telling us only a part of the real situation. Why, I don’t know. But I am intrigued.”

Martin said, “Maybe we should just leave these two behind.”

“If you do,” Nur said, “Peter and I will take the high road, and we’ll be at the tower afore ye.”

“He’s paraphrasing Bobby Burns’s song, the one you sing so often,” Tom said to Martin.

Martin grunted, and he said, “They wouldn’t be agents of the enemies of your visitor, Tom. Otherwise, we’d have been turned in long ago. So, we have to believe them. I still don’t understand why the Ethical didn’t tell us about Nur.”

Tom proposed a toast to their newfound band, and they drank. By then, they heard the women on deck. The men were laughing at one of Martin’s jokes when the women came into the cabin, but they had had time to arrange a meeting later in the hills.

The next day they met with Podebrad, who introduced them to his engineering staff. They launched at once into the specifications of the blimp.

Frigate pointed out that what they would build depended on their goal. If they just wished to get near the headwaters, they would need an airship large enough to carry enough fuel to take them there. It wouldn’t have to have a ceiling of more than 4572 meters or 15,000 feet. If they wished to get over the mountains that ringed the polar sea, they’d have to build one which could rise 9144 meters.

That is, if the stories of their height were true. No one really knew.

It would take much longer to design and build a rigid dirigible for the longer, higher flight. It would require a much larger crew and, hence, more training. At higher altitudes, the engines would need supercharging. Besides, the winds there would probably be stronger than the lower winds. Too strong. The zeppelin would have to carry oxygen supplies for personnel and engines. That made the load heavier. And there was. the problem of the engine freezing.

It would be nice if they could use jet engines. These, however, were inefficient at low altitudes and speeds. Airships couldn’t use them unless they went ao higher attitudes. Unfortunately, the metals needed for jet engines were lacking. ”

Podebrad coldly replied that a big rigid dirigible was out. He was interested only in the smaller nonrigid type. This would go over the mountains, keeping at a height of +3962.4 meters or 13,000 feet. He understood that the mountains sometimes rose to 6096 meters. The ship would just go along them until it came to those of lesser height.

“That would require more fuel, because it would make the trip longer,” Frigate said.

“Obviously,” Podebrad said. “The ship will have to be big enough to be prepared for that.”

It was clear that Sinjoro Podebrad was the boss.

The next day Project Airship was started. It was completed in eight months, four less than estimated. Podebrad was a hard driver.

Nur asked Podebrad how he would find Virolando without charts.

The Czech replied that he’d talked to several missionaries who’d originated mere. According to their accounts, Virolando was near the arctic region in which The River flowed downstream. It was an estimated 50,000 kilometers from the headwaters and shouldn’t be too difficult to identify from the air. Since it was on the shores of a very large lake with a rough hourglass shape, and it contained exactly one hundred tall rock spires, it would be impossible to mistake it for another lake.

That is, it would be unless it had a duplicate somewhere else.

Afterward, Frigate said, “I got my doubts about his being a Chancer. Those I’ve met have been very warm, very compassion­ate. This guy could give a refrigerator lessons in freezing.”