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: Cross-tide strategy (was: DR plotting techniques)
    From: Philip Ouvry
    Date: 2003 Oct 25, 22:22 +0200

    When instructing I would pose the following problem to my students.
    
    You are in a boat capable of 4 knots intending to cross a wide river.   Your
    destination is straight across the river.   In the centre of the river the
    current runs at 7 knots but close inshore on either side it reduces to 2
    knots.   What should be your strategy for crossing the river?
    
    My strategy was to cross the river at right angles until close inshore on
    the far side and then proceed against the current (2 knots) to reach the
    destination.   Is there any other strategy?
    
    Philip Ouvry
    
    
    

       
    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