Science: Deep

Into Yokosuku, Japan, steamed the Japanese warship Manshu last week, with arch-plotters aboard (see p. 18). They had been plotting for six months in the Pacific; had plotted the deepest spot yet discovered in the world's oceans, an abyss 9,435 metres (a little over 5 miles) deep between the Izu Peninsula, Japan, and the Bonin Islands. (Previous depth record: 8,500 metres [about 4% miles] off the Kurile Islands, plumbed by the U. S. S. Tuscarora.)

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