Navigation: Easy Accuracy at Sea

Deep below deck, with all the mindless certainty of a Ouija board, a marking pen moved by steel fingers glided across a nautical chart of Narragansett Bay. As he followed the pen's thin red line, a Navy lieutenant, cut off from any view of the water, telephoned commands to the bridge. At each command, the helmsman altered course, and the 65-ft. test ship Alan threaded neatly among islands and inlets. Each change in direction and speed was instantly recorded by the moving pen.

Delicate Marriage. The easy accuracy of the Raytheon navigator that the A Ian was demonstrating for the...

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