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: Doc On Worst Jobs at Sea
    From: Don Seltzer
    Date: 2018 Mar 22, 10:43 -0400
    On Thu, Mar 22, 2018 at 9:45 AM, Bruce J. Pennino <NoReply_Pennino@fer3.com> wrote:
    At about 21 +/- minutes the film shows the determination of speed by “casting the log”.  I’ve always imagined the “log” to be smaller......I recollect seeing a smaller one somewhere. Letting the line drag on the railing does not seem like a proper practice unless the total procedure has been calibrated against two known marks and where there are no other affecting circumstances.

    The log float seems to be about the same size as others that I have seen.  What was lacking was a 'release' mechanism.  One of the three short attachment lines should have been attached to a wooden plug that fitted into the float but would have pulled out when the log line was stopped.  With only two points of connection, the float would have pivoted to horizontal, allowing it to be reeled in easily.

    The knot markings on the line are questionable.  In practice, the markings were generally small twine strands woven into the line.  The proper number of small knots were tied in the twine strands.  I've attached a photo that shows two of these twine markers.

    Don Seltzer

    File:


       
    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