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: Houseboat of time
    From: Paul Saffo
    Date: 2017 Oct 19, 12:59 -0700

    There are several pages of examples which one needs to look at in order to work the diagram, but here is the summare on p50:

    ---------"Houseboat of Time."  To summarize the different kinds of Solar Time, the schematic "Houseboat of Time" in Fig 35 may be useful in converting one kind of time to another. For directions in using the Houseboat, always go from one to another corner of the boat around the boundaries, as indicated by the arrows, and never through or across the Houseboat. Then it is easy to obatin another particular Time which corresponds to any given Time.

    ---------

    It is sort of like the acronym for converting bearings, True Virgins Make Dull Company at Weddings (TVMDCAW) which is useful only after one already throughly understands the different bearing measures and has a gut feel for the relationships.  Thus both TVMCAW and the houseboat  are utterly incomprehensible until one has studied them closely, but after that they are a useful tool for an experienced navigator to avoid an error.

    hope this helps!

    -p

       
    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