Welcome to the NavList Message Boards.


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

Compose Your Message

Add Images & Files
    Re: Jack Aubrey's fixing of longitude
    From: Geoffrey Kolbe
    Date: 2011 Jun 18, 21:03 +0100

    At 20:04 18/06/2011, you wrote:
    >His comment about the chrono suggest he shot a Venus lunar for time
    >and thus the position.
    >Thomas A. Sult, MD
    >Sent from iPhone
    Yes perhaps, but from the description of, "the moon, with Venus clear
    above her," it sounds as though Venus was conjunct the moon - or very
    nearly so. So what does the measurement, "Two seven four," signify?
    It might have been an occultation of Venus. As the Surprise was at a
    latitude of about 15 degrees South at the time, the moon may well
    appear to be travelling vertically up to an occultation with Venus.
    But again, what does the measurement, "Two seven four," signify?
    Geoffrey Kolbe

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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