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[mass noun] The process of calculating one's position, especially at sea, by estimating the direction and distance travelled rather than by using landmarks or astronomical observations.
- ‘After I crossed the first two rivers my dead reckoning told me it was time to take the turn south, but the high mountain checkpoint was not in sight.’
- ‘The pure navigational techniques of celestial and dead reckoning should have been superseded at this time by pilotage.’
- ‘Even if you choose to find your way by dead reckoning, the rear-view mirror has a little LED display to tell you which point of the compass you are heading towards.’
- ‘Due to this appalling weather the convoy had to rely on dead reckoning for navigation.’
- ‘Considering the weather conditions, dead reckoning or entering accurate data on the GPS was not a possibility.’
- ‘We fitted the trucks with air wheels - balloon tires, we would say now - and kept going, navigating like mariners, by sextant and compass and dead reckoning.’
- ‘There is no corresponding southern pole star, so dead reckoning became the primary navigating process.’
- ‘When human mariners and lunar astronauts navigated by dead reckoning they used charts, tables, various measuring instruments, and a considerable amount of mathematics.’
- ‘Back in 1927, Lindbergh proved that a combination of dead reckoning and pilotage can work well, even over a 3,610-mile, 331 2-hour flight.’
- ‘I decided to refigure all my dead reckoning and try to at least get some general idea of where I should be.’
- ‘Sometimes he takes one route, and sometimes another, just as his fancy inclines him, he pays no attention to the compass, but sails by dead reckoning of his own devising.’
- ‘Steady course and speed or continuous monitoring of their changes is required for effective dead reckoning.’
- ‘At first, crews had to rely on dead reckoning - estimating position by speed, flying time and compass.’
- ‘They had been in clouds since the beginning, navigating only by dead reckoning.’
- ‘For centuries, the only way to navigate was to look at the position of the sun and stars and use dead reckoning.’
- ‘In dead reckoning you estimate distance traveled along a given heading as a function of velocity and elapsed time.’
- ‘It was the Greeks who pioneered modern methods of navigating by calculation rather than by dead reckoning.’
- ‘I had been going by dead reckoning, traveling up the incline, letting the slope of the incline guide me.’
- ‘Since medieval times, mariners have employed dead reckoning to navigate their vessels.’
- ‘Christopher Columbus used dead reckoning for his voyages across the Atlantic Ocean.’
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