Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
    Definition Sight Reduction Tables
    From: Mike Freeman
    Date: 2017 Mar 17, 09:53 -0700

    I know what they are and can use them but if someone asked me to give a definition of the term sight reduction I would be beat. Cannot help thinking it is to do with bringing the GP's of the HB's close to our DR therefore making a reduction of the size of the chart required to make a plot. From about a mile square to the size of a plotting sheet.

    Mike

    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