Word: radar
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...wire-guided torpedoes of the Tigerfish type, one of the many exotic modern weapons that have come into play in the Falklands dispute (see box), flashed toward the Belgrano. Both hit their target. About 40 minutes later the stricken Belgrano disappeared from British and Argentine radar screens, the biggest casualty of the war. Indeed, it was the largest warship sunk in a naval engagement since Admiral William Halsey's attacks on the Japanese Inland...
...time of the attack, the Sheffield, a modern, computerized ship commissioned in 1975, and known in the British fleet as "the shiny Sheff," was on radar patrol about 70 miles from the Falklands. Its main duty was to protect the vulnerable aircraft carrier Hermes from air attack. Instead, the destroyer fell victim. At least two, and possibly three, French-built fighters, including at least one Super-Etendard fighter-bomber, were about 550 miles from a mainland airbase, presumably at Rio Gallegos, and nearing the limit of their combat range when the radar on a Super-Etendard locked...
...Since then, the Soviets have launched at least six other reconnaissance satellites in orbits that take them over the South Atlantic, where they can watch both Argentine and British military movements. The intelligence-gathering space vehicles perform various functions. Two were put up to intercept communications. Two others were radar-sensing satellites designed to pick up radar transmissions, particularly from ships. Several were reconnaissance satellites that photograph objects on land or sea and eject capsules of exposed film when the satellites pass over the U.S.S.R. The capsules parachute to earth for recovery and processing...
...French-built Super-Etendard Argentine fighter-bombers probably approached the British fleet flying at around 575 m.p.h. H.M.S. Sheffield 's radar would in all likelihood have picked them up only as they climbed to identify their target and launch their Exocet air-to-sea missiles. From that moment, the attack that crippled the British destroyer some four minutes later was no longer a matter of daring and courage. It had become a 20th century battle of microchips and computers, of decisions and reactions far too fast for the human brain to make. Says a weapons expert for Jane...
Designed for helicopter launch, the missile is believed to have a range of about nine miles, greater than that of the antiaircraft weapons it is likely to encounter on its intended victims, small boats and patrol craft. To use it, a helicopter flies close enough to let its radar light up the target with radio energy, which, when reflected, provides a guiding point for the missile's homing computer. The Sea Skua streaks to its destination at over 550 m.p.h. and as little as 6 ft. above the surface. It is designed to penetrate the target before exploding...