The Sumner line of position furnished ready to lay down upon the chart by means of tables of simultaneous hour angle and azimuth of celestial bodies.
Subtitle: Between 27 ånd 63 o̊f declination, latitude 60 N̊. to 60 S̊.
Contributors: Littlehales, G. W. 1860-1943.; Collins, Elmer Beauchamp, b. 1879.
Edition: [2d ed.] Published by the Hydrographic office under the authority of the secretary of the navy.
Series: [Publication]; no. 204
Publisher: U.S. Govt. print. off.
Published: 1933
Place of publication: Washington
Language: eng
Number of pages: 892
Subjects: Navigation -- Tables.
Genres: Tables.
Notes: Various pagings.
Lettered on cover: The Sumner line of position of celestial bodies. H.O. no. 204. United States Navy department. Hydrographic office. 1933.
First edition, 1925, has title: The Sumner line of position furnished ready to lay down upon the chart by means of tables of simultaneous hour angle and azimuth of the navigator's stars ...
"The plan of arrangement and scope of these tables, as well as the method of using them in navigation, were conceived by Mr. G. W. Littlhales, C.E., hydrographic engineer, Hydrographic office, Washington, D.C."--Pref., p. iii.
Mr. E. B. Collins, nautical expert of the Hydrographic office, wrote the portion of the text dealing with the method of star identification, computed numerous values of hour angle and azimuth, and read all of the final proof. cf. Pref., p. iii.