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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Tide calculation
    From: Geoff Hitchcox
    Date: 2019 Jun 3, 18:44 -0700

    > How quickly could you generate the requested tidal data given the constants on this scrap of paper?

    Hi Frank, because I don't type type too fast, it took me a few minutes to type in the data.

    With a PC, it "instantly" generates the answers, but back in the day, I would have needed one of those wonderful analog

    Tide Prediction Machines

    Attached is the data requested - in a simple text file.

    Regards, Geoff Hitchcox, Christchurch, New Zealand

    File:


       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID 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