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Updated: June 11, 2025
All the nations that had subscribed to the enterprise of the Gun Club were equally interested in the safety of the travellers. At last the grappling-chains, air-chambers, and automatic grappling-irons were embarked on board the Susquehanna. J.T. Maston, the engineer Murchison, and the Gun Club delegates already occupied their cabins. There was nothing to do but to start.
"The buckets will run down into the well upside down, come up on the other side filled, run to the top of the tower, and dump the water into a reservoir tank and go down again. Thus I pump water without a pump in other words, with a pumpless pump! "Simple! Efficient! Nothing to get out of order no valves, no pistons, no air-chambers nothing whatever!" finished Hawkins triumphantly. "Wonderful!"
With one hand he threw back the levers controlling the grip-anchors that held the ship to the ground, while with the other he opened the valve that admitted vapour into the air-chambers and created a vacuum sufficient to raise the ship about a thousand feet into the air, from which elevation a wide extent of country became visible.
And instantly all the bells in the ship again started ringing. At the same moment the professor closed the door and windows of the pilot-house, and injected a strong jet of vapour into the air-chambers, causing the ship to rise rapidly into the air.
"Wake up," he said to Smallways' stare, "and lie down decent." Bert sat up and rubbed his eyes. "Any more fightin' yet?" he asked. "No," said Kurt, and sat down, a tired man. "Gott!" he cried presently, rubbing his hands over his face, "but I'd like a cold bath! I've been looking for stray bullet holes in the air-chambers all night until now." He yawned. "I must sleep.
It is to these large air-chambers in bow and stern, coupled with great sheer or rise fore and aft of gunwale, and a very heavy keel, that the boat owes its self-righting power. The two air-chambers are rounded on the top.
In short, to use an expression which may appear paradoxical, she can carry more than she can hold has floating power sufficient to support more than can be got into her. The third her self-righting quality is also due to air-chambers, in connection with a heavy keel. There are two large and prominent air-cases in the lifeboat one in the bow, the other in the stern.
The high bow prevents the shipping of too much water, but will also offer resistance to the wind and so impede the progress of the boat. A medium high bow is the best. One firm of camp-outfitters advertises a canoe called the Sponson, the name being taken from the air-chambers built along the outside rail, which are called sponsons.
The index hands of both dials were travelling backwards towards zero along their respective graduated arcs; and simultaneously with the registration by the pressure gauge of a pressure of six pounds which indicated the air-pressure in the air-chambers of the ship the other dial registered zero, thus indicating that the partial exhaustion of the air in the air-chambers had rendered the ship so buoyant that she was now deprived of weight and was upon the point of floating upward, balloon-like, in the air.
In another instant, a vacuum having been created in the air-chambers, the Flying Fish broke water with a tremendous rush and swirl, and, without a moment's pause, rose into the air, the senseless body on deck being prevented from washing off again only by the guard-rail which stood in place of bulwarks.
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