NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: H.O. 203/204, Littlehales, Hydrographic Engineer
From: Robert VanderPol II
Date: 2017 Mar 22, 06:07 -0700
From: Robert VanderPol II
Date: 2017 Mar 22, 06:07 -0700
Brad:
It sounds like this may have been the 2nd inspection table as opposed to mathematical tables like Weems, Driesenstock or Ageton.
My 1984 edition of Bowditch lists HO-201 (1919,Simultaneous Altitudes and Azimuths of Celestial Bodies) which it describes as a lookup table. 606pg, Lat to 60o, Dec to 24o, LHA tablulated every 2.5o. It comments that the tables were well arrange but no assitance was given for interpolation of declination. Based date and HO number this appears to pre-date 203/204. Does 203/204 give interpolation assistance? The expanded range explains the table growth.
Thanks for the info.
Bob II
