Word: oceanic
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Dates: during 1950-1959
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...stars, they fell back on dead reckoning. By recording the ship's direction and its motion through the water, they tried to keep track of its position. The system did not work very well, chiefly because of crude instruments and because the effect of ocean currents was often unknown. But if a ship could have measured accurately its motion across the solid ocean bottom instead of the fluid surface, dead reckoning would have brought it to any harbor through the thickest...
...Navy's automatic navigator AN/ANP-67, which was publicly described in detail for the first time last week, uses "ocean-bottom" dead reckoning for airplane navigation. Developed by Ryan Aeronautical Co., the "67" is a 200-lb. black box packed with electronic apparatus that transmits to the ground two narrow beams of microwaves. When the waves hit the ground, a small part of their energy is reflected back to the transmitter. If the transmitter is moving, as in an airplane, the frequency of the waves is changed slightly by the Doppler effect.*The amount of the change, which...
...This," said Mayor Frank Nelson of Panama City (pop. 26,000), Fla., "will be a city of destiny." Mayor Nelson's grandiloquence was inspired by a civic project that is fast becoming as necessary as neon lights for any ocean, lake or riverside U.S. town with vacation-spot ambitions: a first-class marina to serve as a combination club, garage and general store for the nation's ever-increasing yachtsmen. Last week Panama City was about to start work on not one but two big marinas with dock space for 570 boats along its Gulf Coast waterfront...
Actually, Boston's story is simple. Boston was first a part of the Atlantic Ocean. Gradually the ocean gave way to the North End, and cows came to feed on the greener, moister, North End grass. Puritans followed shortly, anxious to turn cows into milk; and, pursued by Puritans, the cows wandered about the North End, laying out Boston's streets...
...between 4,500 and 6,000 ft. their motion practically stopped. Deeper down they drifted southward, at as much as one-third mile per hour. With the counter Gulf Stream proved to be real, the oceanographers can apply their theories with stepped-up confidence to other parts of the ocean depths...