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    Re: Navigation-L Survey
    From: David E. Gorelick
    Date: 2001 Jun 10, 7:04 PM

    Post replies to the list????
    Well OK; but first:    I'm a landlubber Navigator primarily since I have profound
    motion sickness and am usually an embarassment to all aboard!  :)
    With that in mind, I have this awful avocational interest in things mathematical,
    scientific and historical so..........there we be.
    
    Dan Hogan wrote:
    
    > OK. One more time. PLEASE respond to the survey. Even if you are just getting
    > started.
    >
    > Post replies to the list primarily. I will summarize and post the results.
    > Navigation-l subscribers listed 182. The response to the survey has been 10!.
    >
    > Results will be posted June 13.
    >
    > ******************************************
    > Navigation-L Survey
    >
    > a) Dead Reckoning
    >
    >         What is the method used most?
    >
    >     Mid-Latitude-----:  Always; if not just plain and parallel simplistically.
    >     Mercator Sailing-:
    >     Rhumb Line-------:
    >     Other(Name?)-----:  I'll toy with great circle using Pub.No. 229 for the
    > points. This just for fun.
    >
    > b) Sight Reduction
    >
    >         Which is your primary Sight reduction method?
    >
    >     Computer Program(Name?)--------:  Never!  why bother?
    >     Calculator(Name?)--------------:   Yes!    Nothing programmed; just a
    > scientific calc with the trig functions
    >     Short Navigation Tables,
    >         H.O. 211 etc.(Name?)-------:    Have played with this for a try; but I
    > don't use it.
    >     Standard Navigation Tables,
    >         229, 214 etc.(Name?)-------:   Pub No. 229 if I use a table; I mostly
    > do this to compare table method that requires Assumed Position with Calculator
    > use of the DR.
    >
    > c) Plotting
    >
    >    How do you do your plotting?      On downloaded or purchased sheets using
    > Weems & Plath Parallel Plotter (the one with the roller bar), simple straight
    > edge and divider.
    >
    >     Computer Program(Name?)---:  none
    >     Universal Plotting Sheets-:    downloaded or copied from a book; pad
    > obtained at Celestaire
    >     Manoeuvring Board---------: none
    >     Radar Plotting Sheets-----:    none
    >     Home Made(Describe)-------:
    >
    > d) Navigation Manuals
    >
    >    Name your main reference manual:
    >
    >         Bowditch 1995 Ed.------------------:  Yes  : and of course the Nautical
    > Almanac
    >         Bowditch (pre-1995)----------------:   No
    >         Mixter (Primer of Navigation)------:   No
    >         Chapman's--------------------------:   No
    >         Celestial Navigation for Yachtsman-:   No
    >         Shute----------------------------------:  No
    >         Shirk----------------------------------:  No
    >         Porter---------------------------------:  No
    >         Hemenway-------------------------------:  No
    >
    >     Name a manual/book that helped you the most:
    >
    >         W.F. Buckley {at} Airborne/Video----------:
    >         Le Cours des Glenans-------------------:
    >         Bowditch-1995--------------------------:  Yes
    >         Practical Celestial Navigation(HO 229)-:
    >         Self-Contained Celestial Navigation----:
    >         Mariner's Celestial Navigation---------:
    >         Navigation Afloat----------------------:
    >         Cruising Under Sail (E. Hiscock)-------:
    >         Shute----------------------------------:
    >         Shirk----------------------------------:
    >         Porter---------------------------------:
    >         Hemenway-------------------------------:
    >         Mixter---------------------------------:
    >                       Turner, Merle B.   Celestial for the Cruising Navigator
    
    
    
    >
    > e) Do you use the Nautical Almanac?
    >
    >         Commercial-----------:    Always ! !
    >         USNO-----------------:
    >         Self-design Software-:
    >         Computer-------------:
    >         USNO Web Site--------:
    >
    
    Addenda:            My "first read" was Howell, Susan   Practical Celestial
    Navigation.   About 15 years ago ; got me started.                Since my
    interest is in applied math and history, I'll often do a problem in the comfort
    of my home using calculator and also a slide rule to compare accuracies with the
    AP method of Pub. No. 229.
    And........  I'll occasionally do some Lunar's using  Stark, Bruce  Tables for
    Clearing the Lunar Distance......
    Since I have about 120 �  of sea horizon from my living room and roof deck, I
    spend many a leisurly evening with the trigonometry.  Oh yes the explanatory
    pages of the Almanac lend for many an experimental comparison.
    
    
    > Dave
    
    dgorelmd{at}home.com
    Lat 33� 55' N     Lon  118� 06'  W    (by my own sites for 4 yrs plotted
    variously!)
    
    

       
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