A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: John Pinto
Date: 2021 Oct 30, 04:39 -0700
From reading those recollections of Sadler posted here I wouldn't call what was being done in 1936 "advent of first digital computers" as Karl remarks in his book. Karl says this about the US attempt to produce HO 214 but Sadler makes it sound like it was the British who did the computations for subsequent volumes. It's all a bit murky and it may have been considered classified which is why there is no real evidence on how it was done.