We still had water in the airboat, up to our knees, but Purple refused to let us dump it. “Look how high we are already,” he said. “There’s no point to throwing this water away. Later, when the windbags leak a little more, then we’ll need it. Besides, I may want to make some more hydrogen first.”
“Do you have enough electrissy?”
He smiled sheeplishly. “I — uh, I sort of miscalculated when I filled windbags. I didn’t realize they still had as much hydrogen in them as they did. I have enough power left to fill three airbags. Or to fill four if I don’t want to call my flying egg down.” He looked about him. “That should be enough. We should have at least four days of flying time left before the balloons are too weak again and I’m out of power. If we can’t make it by then, we’ll never make it.”
We sailed on hungrily; and steadily, steadily north.
We fought crosswinds for a while, but always the general direction of our motion was north.
We had lost our course line of hills under the water sometime during the thunderstorm. That we had been unable to find it again didn’t worry Purple as much as it might have. He still had measuring devices, and he charted our course by them.
When I asked him about it, he shrugged it off, “Well, it seemed like a good idea, Lant — but I think those hills of yours are too deeply submerged now to be seen. Maybe we’ll be lucky though, and see them again when we get over shallower water.”
The next day, he recharged the windbags, leaving himself only enough power to fill two bags completely until full, or one windbag and a call to his flying egg.
Toward evening we finally pulled the plug and drained away the knee-high water which had been our companion for the last two days. “I had thought his trip was going to be over water,” Shoogar grumbled, “not through it.”
Purple grinned as he watched the water spill away. We were too high to see if we were rising, but the feel of the craft told us that we were. He said, “But it was obvious, Shoogar, we should have thought of it sooner — always keep a quantity of water in the boat. It helps us to balance the craft so that it doesn’t rock so much when we move. It’s there for re-charging the airbags — we never have to go down to the water any more. And we can use it as ballast too.”
“I tell you that that’s nonsense!” Shoogar exploded. “Ballast, drinking water, gas-making water, wash water — What kind of a spell is it when you arbitrarily change the name of the object to suit your needs?”
And he stamped off to the bow to sulk, his sandals making wet squishy sounds as he went.
He was still there when darkness came, peering forward at the sky and chanting a moon-bringer spell.
It was Orbur who spotted our course line again. Far off to the left, a lighter-colored patch of sea could be seen.
We were lower now, despite the dumping of six bags of water. Purple said it was due to the airbags leaking faster than before. They were stretching, he said, and the seams weren’t as strong as he had hoped. He ordered the boys to come about and head the boat in a course that would eventually bring us over the spine of hills again.
I chewed thoughtfully on a lump of moldy hardbread. That the hills were visible under the water again meant that we were nearing shallower seas. Soon we might be over land, and our journey would be over.
The windbags above were taut, but rippling slightly in the wind. Soon the ripplings would increase some more, folds of cloth would hang loose, the bags would droop heavily — and all the while we would descend lower and lower.
Purple began emptying the last of the ballast bags — all except two which we would save for drinking water. Shoogar moaned, when he said that. The boat rose some as he dumped the ballast, but not by any significant amount. “Well, that’s it,” he said. “We make it on the gas we’ve got left, or not at all.”
Wilville and Orbur pumped silently and steadily. They no longer chanted happily while they worked. Rather, they seemed almost in a trance, trying to endure from one moment to the next. They had both developed sores and blisters on their hands and buttocks. Purple had sprayed them each with a salve, but then they had gone back out onto the out-riggers, and I suspected that the salve would not do much good.
We took up our position over the spine of hills and pumped steadily north. I wobbled to the front of the boat and joined Shoogar. Although the red sun was still bright in the west, he wanted to miss not a moment of the impending darkness. “The moons,” he chortled happily, “the moons should be visible soon.”
I ignored him. I was not so much concerned with what was above as with what was ahead. Was that a line of narrow darkness on the forward horizon? It was too dark to tell.
I called it to Purple’s attention. He shouldered roughly past Shoogar and peered eagerly forward. “Umph,” he said, “I can’t see.”
“Use your flashlight,” I suggested.
“No, Lant, it hasn’t enough power to reach that far.”
“Attach it to your big battery. That still has some power left in it.”
He smiled. “I could do that, but it hasn’t got enough power left in it to turn the flashlight up that bright. Besides, blue dawn will be here in slightly more than an hour. If it is land, we’ll see it then.”
The red sun faded away then, and we throbbed impatiently through the darkness, only the steady sssssss of the bicycles reminding us that we were moving. Purple paced restlessly in the back of the boat, while Shoogar chanted steadily in the bow.
I tried to sleep, but couldn’t.
Morning snapped up over the east and as one, Purple and I rushed forward. Wilville was already crying, “Land! I can see it! Land! We’ve made it! We’ve made it!”
“Keep pedaling,” Purple shouted. “Keep pedaling!”
We were lower now — much lower — the airbags were not holding their hydrogen as long as they used to, and we were only a few manheights above the water.
It mattered not. Far ahead of us we could see the craggy shore of the North, and behind it, jagged hills rising toward a familiar mountain range — The Teeth Of Despair.
“Oh, pump, Wilville, pump!” cried Purple. “Pump, Orbur, pump!” He peered so far forward out of the boat, I thought he was ready to leap out and swim for land. “Just a little bit farther!”
The sea below us was mottled and ugly. We could see jagged reefs below us — and here and there a whirlpool. All slid past, but we were sinking lower and lower.
Purple noticed it too. “What the —” He moved back inside the boat and began tugging experimentally at the rigging.
“One of the bags must have a leak!” He started climbing upward. “Is it this one?” He pulled at a rope. “No. Maybe it s that one. Yes, the seam there — see it?”
I looked. Just above him, one of the airbags had a narrow slit of darkness in its belly. Purple took a step higher in the rigging.
And then it happened.
The seam ripped wide open — a great stretching and tearing sound. The bag folded open, and the boat gave a sudden lurch as it collapsed. Huge lengths of aircloth began falling across the rigging. Wilville and Orbur screamed.
“Throw some ballast! Throw some ballast!” cried Shoogar.
He ran frantically about the boat, but we only had two ballast bags. He pulled at them furiously.
“No!” shouted Purple. “That won’t do any good. There’s not enough!” He half climbed, half fell from the rigging.
“Lant, get my airmaker!”
“Where is it?”
“In the back of the boat, I think! Hurry!”
We were losing altitude fast. And I could see why he wanted me to hurry. A swirling whirlpool lay below us, hungry and sucking. It was huge.
Purple already had a windbag nozzle untied and waiting above an open sack of water. He grabbed the airmaker and shoved its funnel into the airhose and into the water, both in one motion. He snapped his battery on. The windbag swelled frantically, strove to rise. The airboat gave a lurch.