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: Relative bearings
    From: Bill B
    Date: 2015 Apr 15, 15:31 -0400

    On 4/14/2015 9:41 PM, Lu Abel wrote:
    > A very favorite "trick" question on navigation exams is "You observe a
    > vessel off your port bow.  Its relative bearing is decreasing.   This
    > means the vessel will pass (a) ahead of you, (b) aft of you."  Many will
    > answer "pass ahead" because they think the angle on the bow is decreasing.
    
    Funny. A variation is very handy for inland dinghy racing where one
    often finds themselves in a crossing situation without ROW. Is the other
    boat moving faster or slower relative to the shore? If faster you will
    pass astern, if slower you will safely cross their bow. Amazing how
    accurate it is even when the change of angle is verry small.
    
    It is also useful when converging on opposite tacks to weather. If you
    know you you would cross their bow several boat lengths ahead, it gives
    you the option of lee bowing a buddy if it is to your advantage.
    

       
    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