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
    Latitude by midnight sun
    From: Bob Miorelli
    Date: 2016 Aug 16, 07:49 -0700

    I'm reading a book about Henry Hudson.  At one point in his 1607 voyage abord the Hopewell he claims to have determined latitude by the midnight sun.  He was in the high latitudes where the sun never sets and took his readings when the sun was at its lowest point in the sky.  Considering the instruments available to him in 1607 is this a reasonable thing to do?  He seems to have been using a simple cross staff and not the more modern three-vaned cross staff.  The technique was described in William Bourne's Regiment for the Sea in 1587.

    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