Abstract
(1) NAUTICAL astronomy is simply the application of spherical trigonometry to the problem of ascertaining the latitude and longitude at sea by observations of the heavenly bodies; as also the errors of the compass. To a student acquainted with spherical trigonometry it is only necessary to give the figure showing the data available, and the result required, to enable him to make the necessary calculation. Mr. Symonds gives the figures and also some trigonometrical formula, as do all other books, or nearly all others, which treat of navigation and nautical astronomy, but his figures are badly drawn, especially Fig. 2 on p. 8.
(1) Nautical Astronomy.
W. P. Symonds. Pp. 130. (London: J. D. Potter, 1912.) Price 6s.
(2) The “Newest” Navigation Altitude and Azimuth Tables for Facilitating the Determination of Lines of Position and Geographical Position at Sea.
Second edition. Lieut. R. de Aquino. Pp. xlix + 176 + v* + 36*. (London: J. D. Potter, 1912.) Price 10s. 6d. net.
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(1) Nautical Astronomy (2) The “Newest” Navigation Altitude and Azimuth Tables for Facilitating the Determination of Lines of Position and Geographical Position at Sea . Nature 90, 617–618 (1913). https://doi.org/10.1038/090617b0
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DOI: https://doi.org/10.1038/090617b0