We cast away before the sound of the first gun had died, and another second saw us rising swiftly from the surface of the sea. I lay at full length along the deck with the levers and buttons of control before me. Xodar and the boy were stretched directly behind me, prone also that we might offer as little resistance to the air as possible.
"Rise high," whispered Xodar. "They dare not fire their heavy guns toward the dome—the fragments of the shells would drop back among their own craft. If we are high enough our keel plates will protect us from rifle fire."
I did as he bade. Below us we could see the men leaping into the water by hundreds, and striking out for the small cruisers and one-man fliers that lay moored about the big ships. The larger craft were getting under way, following us rapidly, but not rising from the water.
"A little to your right," cried Xodar, for there are no points of compass upon Omean where every direction is due north.
The pandemonium that had broken out below us was deafening. Rifles cracked, officers shouted orders, men yelled directions to one another from the water and from the decks of myriad boats, while through all ran the purr of countless propellers cutting water and air.
I had not dared pull my speed lever to the highest for fear of overrunning the mouth of the shaft that passed from Omean's dome to the world above, but even so we were hitting a clip that I doubt has ever been equalled on the windless sea.
The smaller fliers were commencing to rise toward us when Xodar shouted: "The shaft! The shaft! Dead ahead," and I saw the opening, black and yawning in the glowing dome of this underworld.
A ten-man cruiser was rising directly in front to cut off our escape. It was the only vessel that stood in our way, but at the rate that it was traveling it would come between us and the shaft in plenty of time to thwart our plans.
It was rising at an angle of about forty-five degrees dead ahead of us, with the evident intention of combing us with grappling hooks from above as it skimmed low over our deck.
There was but one forlorn hope for us, and I took it. It was useless to try to pass over her, for that would have allowed her to force us against the rocky dome above, and we were already too near that as it was. To have attempted to dive below her would have put us entirely at her mercy, and precisely where she wanted us. On either side a hundred other menacing craft were hastening toward us. The alternative was filled with risk—in fact it was all risk, with but a slender chance of success.