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    Re: Transcript Of Worsleys Navigational Log Book
    From: Brad Morris
    Date: 2017 Feb 1, 14:47 -0500
    Lars

    I hope I have caught all of your recommended changes.  They are below.

    Attached, please find version 3.3

    ##########
    I've updated "1m4' more slow" to "1m4s more slow"

    #############
    I've updated, on the 26th, from 19 46 to 79 46.  I think this a common mistake of mine.  Worsley's 7's look very much like 1's, and there is only a slight distinguishing mark which differentiates them.  If any more of these pop up, I will be pleased update.

    #######

    About April 26th

    16°28'
    16 37
    73.20 x
    13 32 x
    ---------
    59 47.44

    You wrote

    My impression is that this is the noon observation for latitude. I know that you insist that the last row is correct, but why is the observed position then given as 59°46' above? The next last row should be the declination, 13°32'34" within one or two seconds of arc. Could you please give it another look? As it is now it makes no sense.

    My response:

    The data runs right to the very edge of the page.  There are squiggles present but for the life of me, I cannot read them. Yes, the declination could be  13°32'34"  but the last 3 characters are completely illegible. 

    The question then becomes, do we fill in these characters, based upon known computation to fit or do we leave them illegible.

    And yes, the 59 47 44 is there, but so is 59 46.  Perhaps the 44 of 59 47 44 is imagined on my part.  This is a very muddy section in his handwriting.

      It is unexplained why Worsley makes that entry.  I agree that the numbers do not agree.  I cannot explain it.


    ###"#####

    b) 4th May

    N36E 52 41

    Looks like course dlat dep, but the values don't correspond to each other. Please give it a look again!

    Could you be clearer what you wish to update Lars?  

    #########

    Brad, regarding the mysterious entry "N36E 52 41" on the 4th of May, I have got an idea:

    obs'd psn 3rd   56°13'S          45°38'W
    obs'd psn 4th   55  31             44  43
                             ----------          -----------
                         dlat    42'N    dlong   55'E

    mean lat  55°52'

    lat     dep for 55' dlong
    55     31.5
    56     30.8
            -------
               0.7

    Mental interpolation gives a departure of 31 for the mean lat. By inspection in the traverse table we find the course N36°E and distance 52 miles. The day's run.

    So maybe the entry shall be "N36E 52 42", or, still better, "N36E 52 42 55 = 31".

    Response:  Updated to N36E 52 42.

    Brad




    File: 138116.the-log,-revision-3.3.pdf
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