Nautical science in its relation to practical navigation, together with a study of the tides and tidal currents (1910)
Poor, Charles Lane, 1866- · New York, London, G. P. Putnam's sons · leaf 258
Longitude 225 tor, an error in the measured altitude will always introduce a greater error in the resulting longitude. When the body is observed off the prime vertical the error in the departvire is greater than … Fig. 18.—Error in Longitude due to Erroneous Altitude the error in the altitude, and the departure error becomes greater and greater the farther the body is away from the prime vertical, and becomes practically infinite when the observation is made on the meridian. This is shown in the following…
Nautical astronomy
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