Word: hull
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Dates: during 1950-1959
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Meanwhile, the Maria Julia pulled alongside the trawler Lifeguard with another boarding party ready to leap. But as the two ships tossed and rolled, the Icelandic boat was holed above the waterline by the Lifeguard's hull, and her boarders beaten back by a flourish of British boathooks and axes backed up by the threat of fire hoses primed with steaming water from the Lifeguard's boilers...
Thach and his men, and the civilian scientists working on ASW problems, hunt this jungle with sonar and radar equipment that has grown in sophistication over the years but is still far from perfect. Heavy seas, hammering the hull of a destroyer, can override the sonar-transmitted sounds of distant submarine screws or reduction gears. The sun heats the thin layer of air over smooth water, and this in turn can bend radar waves. Sometimes a thermal layer, 100 to 300 feet deep, distorts sound-and a knowledgeable sub skipper plays this layer like a shield. He can confound enemy...
...disaster. But in port, the experts argued, no ship would be traveling fast enough to penetrate the heavy shielding built around the reactor. "However," said Admiral Rickover, "in the unlikely event that a collision would be so severe and so precisely located as to penetrate the submarine's hull and its reactor system, the reactor is so located in the ship that water flooding into the ship would also flood the reactor, and prevent the release of any significant amount of radioactivity to the surroundings...
...Trieste proves the case for a 12,000-ft. sub, its design may be strange. Since only the crew and controls need protection from pressure, all the power and ordnance equipment of such a sub could ride "outside" them in an outer hull filled with oil. Like the thin steel of the bathyscaphe's gasoline float, which feels no appreciable pressure, the sub's outer hull need not be thick and pressurized. It could be made of lightweight aluminum or lithium for greater speed...
...scientists looked upon a world within the world where living men had never been. Already Trieste has descended almost three miles, or 20 times deeper than conventional submarines. It can do this without danger to itself or passengers because it operates under water like a blimp. Its 50-ft. hull is a float carrying 28,000 gallons of gasoline, which is 30% lighter than sea water and compressible. The float does the job of a balloon's gas-filled bag, while the passenger ball hangs below. Water enters the float, equalizes the inside and outside pressure, and compresses...