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    Re: Navigation exercise
    From: Mike Burkes
    Date: 2008 May 29, 12:49 -0700

    
    HI Frank great stuff speaking of early Mixter I have a 15th printing circa 
    Oct, 1943 and my question is regarding the dip table on the inside cover, 
    part of Table A . If you have reference to it I noticed with much confusion 
    that most of the correction is positive. I tried to find the explanation but 
    I seem to be missing something. Your enlightment would be greatly appreciated 
    thanks much. 
    > Jeremy, you wrote:
    > "Funny thing about that, it was my textbook for 3 semesters of CelNav in
    > college."
    >
    > LOL. Well, one CAN use an encyclopedia as a textbook. Of course, if you have
    > good instructors, nothing else matters.
    >
    > ""Have" or "use" as they are not one in the same. At the moment, ll I have
    > is a WW2 aircraft sextant. I am planning on getting a sextant when I get
    > home to practice some lunars."
    >
    > Before you buy, you should ask on the list here. There's a lot of experience
    > in the group with respect to sextant purchases.
    >
    > And you wrote:
    > "As far as using sextants, I tend to use what is on the ship. I will take
    > some pictures of our various navigation tools and post a link to a photo
    > gallery for those who are interested."
    >
    > Excellent. I would love to see that. And I'm sure I'm not the only one who
    > would like to see the vessel you're on.
    >
    > You wrote:
    > "In a strange twist of fate, I have read very few navigational texts, and
    > less history. I have read most of Bowditch, some Dutton's, and then the
    > Tables I use (HO 214, HO 229, HO 249, Bruce Starke's Lunar Tables).
    > Everything else I know is from instruction by navigators. This is why I
    > think that I am somewhat lost when people reference some other tables or use
    > terms that I am not familiar with."
    >
    > Then I have two book recommendations for you and one general suggestion.
    > First, get a copy of Mixter's "Primer of Navigation" --one of the original
    > editions from the 1940s. It's really well-written and every navigation
    > enthusiast I know who has a copy just loves it. They turn up on ebay fairly
    > often. Second, read Lecky's "Wrinkles in Practical Navigation" which was
    > written in the late 19th century. It's wonderful. Much of the advice in it
    > is valid today, and it will fill in a lot of that historical terminology as
    > well as providing an excellent summary of the state of navigation c.1880.
    > And best of all, it's available for free online via Google Books. You can
    > download dozens and dozens of fascinating old navigation books from Google
    > these days. Care to read a Bowditch from 1826?? That used to be a difficult
    > proposition: either a trip to a research library and many hours sitting in
    > an uncomfortable chair, or a couple of hundred dollars for a "reading copy"
    > (in other words, a badly damaged copy) at a used book store. But within the
    > past five years, it's all changed. Here is Lecky's Wrinkles:
    > http://books.google.com/books?id=BzIAAAAAQAAJ
    > And here is the 1826 edition of Bowditch:
    > http://books.google.com/books?id=KcVBAAAAIAAJ
    > You could get lost in Google Books so remember to come up for air. Depending
    > on your geographic location, you can download these books in their entirety
    > as pdf files. They are typically on the order of 50 megabytes, so if you
    > don't have high-speed access, it's probably worth making a list of the ones
    > you want and hitting an Internet cafe just for the downloads. Great stuff!
    >
    > Of the dreaded, dunking Dyer Dhows at Mystic Seaport, you wrote:
    > "No I never capsized, but they are the slowest, least responsive, boat I've
    > ever sailed."
    >
    > LOL. I'll tell the little boats you said 'hi'. :-)
    >
    > I wrote previously:
    > Of course, now I can estimate your age. Somewhere between 30 and 35? I'll
    > guess 32. Am I close?? :-) That makes you a bona-fide 'kid' by NavList's
    > statistics.
    >
    > "I'm 32, so you are quite right. I just wonder how many sights I've taken,
    > it must number in the hundreds."
    >
    > Ha! I have to give myself a cookie for a good guess. Incidentally, so
    > there's no possibility of mis-understanding, the fact that you are younger
    > than most of us (I'm younger than "most of us" here, and I'm a dozen years
    > older than you) is a *good* thing from where I stand. And I would bet that
    > you have taken more sights at sea in the past ten years than anyone else on
    > NavList. There are some members who undoubtedly took more sights thirty or
    > forty years ago, but I'm sure you have the top position for recent sights.
    > I've very much enjoyed your posts, too.
    >
    > -FER
    >
    >
    > >
    
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