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: Leg 56
    From: Joe Shields
    Date: 1999 Jul 15, 16:17 EDT

    My problem with these multi-day legs is that I've always worked out
    shorter leg DR problems graphically on a chart.  I can now easily
    generate charts for anywhere in the world thanks to the chart plotting
    software this group has led me to, but the scale isn't large enough to
    work out the solution graphically.  Are you using some sort of distance
    formula or a table somewhere (or a Nav. calculator) to arrive at the DR
    position.  I've only done day-long coastal cruises but I always figured
    you would still work out DR positions over a shorter elapsed time, if
    for no other reason then that the wind conditions would vary enough to
    give different cruising speeds and even headings.
    I'm not complaining, mind you, just that I could use some help in
    working the long-leg DR problems.  What's the trick?
    -- Joe Shields
    > ----------
    > From:         Millard Kirk[SMTP:mkirk{at}XXX.XXX]
    > Reply To:     Navigation Mailing List
    > Sent:         Wednesday, July 14, 1999 5:12 PM
    > To:   NAVIGATION-L{at}XXX.XXX
    > Subject:      Leg 56
    >
    > My first attempt at Leg 56 I notice the typo's and decided to wait
    > until Dan
    > corrected the typo's. He usually catches those error very quickly and
    > he
    > did.
    >
    > Now I start to work the problem.  Answers 1 and 2 correspond with the
    > answers given by Dan/
    >
    > My question to the list is concerning question # 3.   I assumed we
    > started
    > on 11:50:00 UTC {at} 20/03/1999 and traveled to 18:48:23 UTC 23/03/1999
    > that
    > is  3 days and 6 hrs 58 min 23 sec., or 78 hrs 58 min 23 sec.  That
    > means
    > our DR should reflect 78 hrs 58 min 23 sec traveling at 10.3 kts on a
    > course
    > of 124.6  true.  We were buffeted for two days (I don't know what that
    > means), but in any case I have trouble coming up with the correct DR
    > for
    > problem # 3.   Any Help!
    >
    > Still...............
    >
    > Learning the Hard Way!!
    >
    > Millard Kirk KB8YQO       | mailto:mkirk{at}XXX.XXX
    > 116 Lewis Ave                    |
    > http://webpages.marshall.edu/~mkirk/
    > Barboursville, WV               | A West Virginia Blue Water Sailor
    > 25504                                 | Phone: (304) 736-6544
    >                                            | First United Methodist
    > Church,
    > Barboursville, WV
    >                                            | Homepage
    > http://www.gbgm-umc.org/bfumcwv/
    >
    

       
    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