NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2022 Apr 9, 11:55 -0700
Ed Popko you were wondering about SRB.
Ed
I’ve no idea, but if what you say is true, it looks like old fashioned pilotage navigation. E.G. You’re flying up the Atlantic at 60,000’ in your Bolockvair 52871 or whatever heading 045°. The southern tip of Florida bears 300°(SRB). Relative+Heading-180· is your bearing from the tip of Florida. So 300+045-180= 345-200+20=Plot165°. Slap your protractor on the tip of Florida and draw a line at 165°. Take a depression shot at the same time. Range =altitude/tan depression. You’ve got a fix. With a Hughes Mk2 sextant, you'd lock the top of the azimouth ring to the top lubber line and read the relative bearing of the object off the bottom lubber line. you could do the same with an Astrocompass Mki. just to get a bearing. Usual caveat, I might be completely wrong. DaveP
