Science: Tugboat Radar

Magic-eyed radar, which guides the Queen Elizabeth through North Atlantic fogs, can guide a tugboat, too. Last week the New Haven and the Pennsylvania Railroads demonstrated how tugboat radar might eliminate fog delays in New York's crowded harbor.

Sandwiched between two barges carrying 40 loaded freight cars, the New Haven's tug Transfer 21 set out from Bay Ridge, Brooklyn for Greenville on the Jersey shore. Her pilothouse windows were hung with heavy grey curtains, more opaque than any fog. This low visibility did not bother the captain. By glancing at the radar's 12-in. "scope," he could follow all harbor doings for a...

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