NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Hello! Is there anybody out there still working on the Silicon Sea Problem Legs?
From: UNK
Date: 2009 Jun 9, 16:45 -0400
From: UNK
Date: 2009 Jun 9, 16:45 -0400
On Tuesday, June 09, 2009 1:19 PM, Bill Lubitz said: > A couple questions, yes I have many! > (1) Often wind force is listed. It is stated as: "Wind is force 4 > from 175 degrees." "Wind force" refers to the Beaufort Scale, a methodology for describing wind velocity prior to the development of velocity-measuring instruments, and still in (declining) use. See http://www.spc.noaa.gov/faq/tornado/beaufort.html or the Wikipedia article for some background. > (2) Often current set and drift are given. Is it your intent that > this be included with course and boat speed as a known condition > in the computation of a DR position. In the notes, it stipulates > that only estimated position (EP) should include DR+current effects. > I have seen it done both ways. This lead to some lively discussions at the time. But the author (hey, Dan, you still out there?) is entitled to his preference. -- Peter Smith --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
