SUBSIM Radio Room Forums - View Single Post - Is SH5 A Good CelNav Practice And Test Bed?

03-26-19, 11:00 AM

I really cannot remember HOW I used to reduce a shot, but if I am not oversimplifying, here is my process...

Shoot Polaris. Elevation = my latitude. No nautical almanac lookups necessary.
Record the time GMT.
Add/subtract the number of hours from last GMT Noon.
#Hrs x 15o = W longitude, if more than 180o, then 360o - W Longitude = E Longitude.

This is all I can remember. Is this correct?

03-26-19, 11:00 AM	#37
Capt Codetrucker Stowaway Posts: n/a Downloads: Uploads:	I really cannot remember HOW I used to reduce a shot, but if I am not oversimplifying, here is my process... Shoot Polaris. Elevation = my latitude. No nautical almanac lookups necessary. Record the time GMT. Add/subtract the number of hours from last GMT Noon. #Hrs x 15o = W longitude, if more than 180o, then 360o - W Longitude = E Longitude. This is all I can remember. Is this correct?