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: US Naval Academy reinstates classes in celestial navigation
    From: Rommel John Miller
    Date: 2015 Oct 15, 16:04 -0400

    The telegraph uses a nifty little graphic which illustrates the use of sextant and how to align the horizon, etc. 

     

    Any idea where I might be able to obtain this graphic to use in teaching elementary celestial navigation to my local USPS group? 

     

    It is one thing to see it in a book like Susan Howell’s book does where a circle is given and then the swing of the sextant represented with an arc.

     

    To newbies interested in the field of Celestial seeing a whole ship, then half a ship and then half a ship with sun juxtaposed opposite the half-ship is a better illustration of what to look for on paper. 

     

    Out at sea is a different matter because rarely is there anything to scale the division against.  Open sea with a relatively flat horizon and knowing your dip is another story altogether. 

     

    I am just glad to see the Navy wising up and realizing the Sextant isn’t a toy.  In my Navy days we still used the sextant and knew the trig to make those values come true. 

     

    It was a sad day when the Navy abandoned Celestial in favor of GPS, but a glorious admission that yes, machines fail and computers get hacked, sextants DON’T!

     

    Any help in finding that graphic in the article however would be appreciated, and I have search the whole gamut of possibilities for finding it on GOOGLE, no luck. 

     

    She had to get it from somewhere.  I’d just like to find it. 

     

    Rommel John Miller

    8679 Island Pointe Drive

    Hebron, MD  21830-1093

     

    410-219-2690 (Land and Home)

    443-365-7925 (Cell)

     

    rommeljohnmiller---.com

    rommeljmiller{at}outlook.com

     

     

    From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of David Pike
    Sent: Thursday, October 15, 2015 2:37 PM
    To: rommeljohnmiller---.com
    Subject: [NavList] Re: US Naval Academy reinstates classes in celestial navigation

     

    The story is now so big that even Drudge links to it.

    http://www.telegraph.co.uk/news/worldnews/northamerica/usa/11931403/US-navy-returns-to-celestial-navigation-amid-fears-of-computer-hack.html

    gl

    Glad to see the Telegraph picked a decent sextant for the photo.  It looks like a Hughes Three Circle Mates just like mine but a bit younger.  I'd be surprised if it was 100% to do with GNSS vulnerability.  There might be a certain amount of maintaining the traditions of the service in it too, like getting the creases of your bell-bottomed trousers in the correct positions. http://www.iwm.org.uk/collections/item/object/30090214 DaveP

    View and reply to this message

       
    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