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H.M. Stationery office, London. 1st edition. Chapters cover a diverse series of navigational topics including: A summary of plane trigonometry; a summary of sperical trigonometry; position of the Earths surface; direction of Earth's surface; the rhumb line; mercators chart; fixing positions by observations of terrestrial objects; the celestrial sphere; correction of the observed altitude; time; the Position Line derived from observation of heavenly body; the first point of Aries; Meridian passage; Polaris or the Pole Star; rising and setting of heavenly bodies; Admiralty charts and hydrographic publications - Bouyage, Lights, and Fog Signals; Coasting ; Anchoring, Mooring, conning the ship, keeping the D.R. during manoevres; instruments; sextants; chronometers, magnetism; the magnetic compass; the theory of tides; observed tides and the use of tide tables; tidal streams; general meteorology and the upper air, and the ocean. Worn condition. Blue cloth covered end boards. 489pp 245 x 150 mm