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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Exercise #11 AM star fix
    From: Greg R_
    Date: 2008 Jun 6, 12:05 -0700

    Navigator results for 05/28/2008 19:25:00Z:
    
     14°56.1'N
    145°08.0'E
    
    (And since that's really close to the DR position, either there must
    not have been a lot of wind and/or current that day - or the navigator
    is really good at what s/he does...  ;-))
    
    And..... not to nit-pick what seems to be our preferred methodology for
    solving these, but if we're all just going to use our favorite
    navigation computer programs (and I realize that computers are the norm
    for doing navigation these days, even I do that), what are we really
    exercising other than our data entry skills (and maybe a chance to see
    how the various celnav programs compare with each other)? 
    
    I'd like to request that at least a few of these be solved by the "old
    school" method (i.e. only an almanac, sight reduction tables, plotting
    sheets (and the usual navigation drawing tools), but no
    computers/calculators other than maybe to check our work). I think
    that's more a measure of celnav skills than just plugging a bunch of
    numbers into a computer program and hitting "Calculate".
    
    --
    GregR
    
    
    
    
    
    
    --- Anabasis  wrote:
    
    > 
    > Exercise #11 AM Star Fix.
    > 
    >   On 29 May 2008 (local date), a ship was sailing course 158 degrees
    > True at a speed of 14.7 knots.  Around 05h 25m ZT (ZD -10), a round
    > of
    > sights was taken.  The DR is Latitude 14deg 56� North, Longitude
    > 145deg 07.5� East.  Height of eye is 106 feet, Temp/Press is 82 F/
    > 1010 MB.  Index Error is 0.0.
    > 
    > Here is the sight information, all times in _Zone Time_.
    > 
    > Alpheratz: Hs : 49deg 05.8� @ 05h 13m 38s
    > 
    > Fomalhaut: Hs 40deg 09.4� @ 05h 15m 58s
    > 
    > Vega: Hs 45deg 59.6� @ 05h 20m 08s
    > 
    > Deneb: Hs 58deg 16.8� @ 05h 21m 35s
    > 
    > Jupiter: Hs 43deg 52.4� @ 05h 22m 31s
    > 
    > Moon (LL): Hs 59deg 45.4� @ 05h 24m 43s
    > 
    > 
    > Determine a star fix at 05h25m local time.
    > 
    > Jeremy
    > 
    > > 
    > 
    
    
    --~--~---------~--~----~------------~-------~--~----~
    Navigation List archive: www.fer3.com/arc
    To post, email NavList@fer3.com
    To , email NavList-@fer3.com
    -~----------~----~----~----~------~----~------~--~---
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

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

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

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

    Email Settings

    NavList ID 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