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 204
Finding One's Position at Sea 171 second the line B C. As the observer must be on both lines, his true position was at C, their point of intersection. His assumed latitude, 39°, was in error by nearly 7', and the first observation by … Fig. 14—Astronomical Cross-Bearings itself would have located the ship at a point nearly 10' from the true position. The Nautical Almanac gives the positions of some 150 stars; so that at almost any hour of any night, a pair of these can be selected, which will serve for such "astronomical…
Nautical astronomy
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
