NavList:

   

Reply

Thanks
For your input.
I am studying the N 08 Beta manual.
The tolerance is 3 miles unless it was changed in the final version.
Who could I check with on this issue?
Thank you
Guy


-----Original Message-----
From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf
Of James N Wilson
Sent: Sunday, March 08, 2009 7:19 PM
To: NavList@fer3.com
Subject: [NavList 7598] Re: Say it aint so......


Guy:

As a long time Power Squadron instructor, I have found that any sight
reduction method they have taught is more accurate than the sight data.
The three mile criterion was aimed at greater rigor in the sight taking
process. When I was a student, I had no problem with Ageton for my JN
sights with a five mile accuracy requirement, nor with HO 229 for my N
sights with the three mile requirement. Now I take sights with my
students, and have used the NASR method, and now the calculator, with no
problems with accuracy. Having to plot a LOP to get the distance to or
from the DR introduces another source of error, which Ageton, NASR and
the calculator avoid.

Incidentally, I'm surprised that the three mile accuracy requirement has
been restored. I was at the meeting of the Power Squadron Offshore
Navigation Committee where the decision was made to make the requirement
five miles. I objected and was overruled.

Jim Wilson
____________________________________________________________
Save on Digital Photography Serivces and Hardware. Click Now!
 
oLzezn6t0jX1at6R6P9QTeA9C1K/



--~--~---------~--~----~------------~-------~--~----~
Navigation List archive: www.fer3.com/arc
To post, email NavList@fer3.com
To , email NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---

   

Reply