Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: Regarding fix bearings
    From: NavList
    Date: 2008 Dec 20, 20:53 -0800

    George, thank you for your response.  I thought all the discussions are frozen 
    before Xmas and New Year.  Glad I was wrong. ;>
    
    My suggestion regarding two bearings is follows:
    
    As soon as you can see the landmark suitable to take bow bearing-take the 
    bearing and record the time.  Then use the following formula
    
    tan B = tan A / (1-tan A),
     B=arctanB
    
    where A-the first bearing
          B-the second bearing.
    
    In this case, you take your second bearing (which you calculated as angle B) 
    at landmark and record the time.
    
    You know the time at A and time at B; you know the speed which means you 
    calculate the distance travelled.  And this distance travelled is equal to 
    your distance off from landmark at the moment you took second bearing B.
    
    Respectfully,
    
    A-08
    
    ------------------------------------------
    [Sent from archive by: inuik-AT-yahoo.com]
    
    
    --~--~---------~--~----~------------~-------~--~----~
    Navigation List archive: www.fer3.com/arc
    To post, email NavList@fer3.com
    To unsubscribe, email NavList-unsubscribe@fer3.com
    -~----------~----~----~----~------~----~------~--~---
    
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site