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: [Fwd: [Fwd: Davis Sextants]]
    From: Rick Emerson
    Date: 1999 Jan 26, 07:22 EST

    captainmike7{at}XXX.XXX writes:
     > I have not subjected my Davis Mk 25 to any scientific tests but, as stated
     > previously, from an exactly known location I have taken many sights over
     > the years with intercepts of 0-1 nm and dozens under 3 nm (the requirement
     > for Power Squadron exactly-known-position sights).  I have had none of the
     > maintenance or adjustment problems mentioned by others (Davis Mk 25 circa
     > 1983).
    [...]
    "The proof of the pudding is in the eating" and I think the above
    adequately demonstrates that it is possible to get meaningful results
    from "a plastic sextant".  I want to be clear on this point because
    there have been commentators elsewhere who argue that sextants made
    from plastic, a priori, cannot give good results.
    It is my contention that a number of factors make getting these
    results more difficult than with metal-framed sextants such as (but
    hardly limited to) Astras.
    On class of sextants that I haven't worked with are the 7/8 size
    sextants.  Aside from taking up less space in the cabin, what
    advantage, if any do they offer?  Also, it seems the shorter index arm
    makes accuracy even more problematic.
    Rick
    S/V One With The Wind, Baba 35
    =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
    =-=  TO UNSUBSCRIBE, send this message to majordomo{at}XXX.XXX:     =-=
    =-=      unsubscribe navigation                                         =-=
    =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
    

       
    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