Tables of Computed Altitude and Azimuth: Latitudes 0-9, Inclusive. Vol. I

These tables consist essentially of tabulated solutions of the astronomical triangle, so arranged as to yield the mariner his computed altitude and azimuth by inspection. The scheme of precomputing such values for ready use is a long established one. It is in the scope, arrangement, and convenience of interpolation, developed in the Division of Research of the Hydrographic Office, that these tables are unique. The tables are applicable equally to sights of the sun, moon, planets, and navigational stars; and inasmuch as they are designed for use in connection with celestial bodies of declinations both of same name as, and contrary name to the latitude, they apply to both northern and southern hemispheres. For greater convenience in use, the values for only 10 degrees of latitude are included in each volume of the publication.

Contents
Lat 0
Lat 1
Lat 2
Lat 3
Lat 4
Lat 5
Lat 6
Lat 7
Lat 8
Lat 9