Science: Ocean Frontier

(See Cover) In the uneasy years before the start of World War II, a Navy destroyer nosed through the warm waters off Guantanamo, Cuba. An experimental sonar gadget pinged steadily. It had worked perfectly on other occasions. But here in the Trop ics, it saw targets that were not there.

It missed targets that were there. The best Navy brains were baffled. So an offi cer was dispatched to the Woods Hole Oceanographic Institution on the shoul der of Cape Cod.

Down from Woods Hole came the U.S.'s only full-fledged oceanographic vessel, the trim...

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