38Talk:
A Forum for Discussions among Voyagers and Others related to the 38th Voyage of the Charles W. Morgan
Re: Navigation: celestial and otherwise
From: Frank Reed
Date: 2014 Jun 25, 14:39 -0700
From: Frank Reed
Date: 2014 Jun 25, 14:39 -0700
Hello Bob,
Just a quick reply here, more later. You wrote:
"At least I'm assuming "ac" means dead reckoning. I'm being thick--you have any idea what "ac" is an abbreviation for?"
Yes, that's longitude "by account," and you're right -- it's the same as DR.
-FER
