BRAIN TEASERS
Monthly Archive - July 2019 (page 4)

Monthly Archive - July 2019 (page 4)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 31 to 40.
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Thresher submarine

In 1960, Thresher was launched, the first of a class of U.S. nuclear-powered attack submarines. During sea trials after commissioning it sank in Apt 1963 for reasons that remain unknown. With 129 persons on board, it was the worst loss in submarine history. It was armed with Subroc antisubmarine missiles that could be fitted with either high explosives of a nuclear warhead. The wreckage was observed from the bathyscaphe Trieste at a depth of about 8,500-ft.
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