The monstrosity that was finally constructed defied belief. The transporter base was nearly a hundred meters long with two fifty-meter-wide treads on either side supported by four-story-high road wheels. The “gun” was mounted on shock absorbers the size of small submarines and constructed using some of the same techniques. The swivel turret was two stories
When the design was mostly done the power source was obvious; there wasn’t enough diesel in the entire United States to support the projected requirements for the guns. On the other hand, Canada’s supplies of pitchblende were plentiful and above the weather-line that the Posleen preferred. Therefore, nuclear was the only way to go. However, putting a large “reactor control crew” onboard seemed silly. Finally, they “borrowed” a South African design for a simple, practically foolproof nuclear vessel called a “pebble-bed helium” reactor. The system used layered “pebbles” that automatically mitigated the reaction and helium — which could not pick up, and thus release, radiation — as the temperature transfer medium. Even if the coolant system became totally open, that is if it started venting helium to the air, no radiation would be released and the reactor would not “melt-down.” Of course, if the reactor took a direct hit there would be “hot” uranium scattered all over the ground but other than that, no problem; the system was absolute proof against “China Syndrome.”
The control center and living quarters were actually located underneath the behemoth and were the size of a small trailer. It wasn’t that it took a large crew; the system could actually be run by one person. It just made more sense that way. The designers looked at the physical requirements for the three-man crew and finally settled on a small, highly armored command center. But the monstrosity had so much power and space to spare that they added to the design until they had a small living quarters that would permit the crew to live independent of the surroundings.
The designers also included a rather interesting evac vehicle.
So when the crews of SheVas Forty-Two and Twenty-Three got the word that a lander was on the way, they dropped their cards, dropped their Gameboys and slid smoothly into action.
“This is Forty-Two, General,” said Lieutenant Colonel Thomas Wagoner. Forty-Two was a brand new SheVa,
“Okay, boys, blow the camouflage; it’s time to lay some tube.”
Duncan felt a rumbling in the seat of his pants and configured his view to “swing” westward. The remains of West Rochester were shuddering as if the town had been hit by a minor but persistent earthquake and he could see boulders being kicked loose from the hill he was sitting on. When the viewpoint finally swung to the west it became obvious what had caused the effect.
Behind him, about four miles to the rear on the south side of the canal, an oddly shaped hill was shuddering apart. As the greenish foam fell away the enormous shape of a SheVa gun was revealed.
The thing was just
The scale of the guns was hard to grasp until you realized that the tiny ants running alongside weren’t even
He shook his head as the thing first waggled from side to side to warn all the little “crunchies” that it was preparing to maneuver and then accelerated up the side of a small moraine, smashing a factory to bits on the way.
“Fucking show-off,” Duncan muttered, turning back to the east.
“Forty-two,” called the commander of SheVa Twenty-Three, “be aware that we have two more lift emanations including a C-Dec.”
“Got that,” said Colonel Wagoner. His intent was to use the moraine as cover until they could get a good hull-down shot at the Lamprey. The problem with SheVa guns was that “hull-down” generally required something like a small river valley; the moraine was as good as he was going to get.