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    Leg 55 results
    From: Paul Hirose
    Date: 1999 Jun 20, 13:15 EDT

    Here are partial results from Leg 55:
    1.  Mar 16 2101Z DR = 47 20 S 122 52 W
    2.  To 52 30 S 100 00 W, TC = 109, dist = 930 nm
    3.  Compass course = 82, speed made good (not asked) 10.8
    4.  Mar 17 0520Z fix, all over the ocean.  My 0520 DR is 47 42 S 121
    20 W.  I reduced all 5 sights, and the LOPs are everywhere!  Some of
    the intercepts are more than 2 deg.
    Conditions here are not the best.  Since I don't have the 1999
    Almanac, I'm following the instructions for using last year's edition
    (deduct 15.1' from GHA Aries).  Also, I don't have an HO 229 for this
    latitude, so I'm using the reduction tables in the Almanac.  Between
    being rusty and using unfamiliar procedures, probably have made some
    blunders.
    body            time     GHA    aLon  LHA      dec     Hc   Zn
    Betelgeuse  02:50:00  127 58  120 58    7   N 7 24  34 16  351
    Procyon     02:51:10  102 13  121 13  341   N 5 14  34 14   23
    Peacock     02:51:24  270 43  121 43  149   S56 44  17 52  197
    Regulus     02:52:22   65 15  121 15  304   N11 58  12 15   56
    Bellatrix   02:53:11  136 16  121 16   15   N 6 21  34 04  342
    All plotting was done on sheets of typing paper.  DR computations by
    E6-B air navigation slide rule.  Sight reduction by paper and pencil.
    By the way, keeping up with Silicon Sea with traditional methods is
    pretty time-consuming, which is the main reason I don't always
    participate.  I've noticed everyone else seems to use computers.
    I may go back to HO 211 for reductions.  The thing I like about 211 is
    that you don't have to contrive an "assumed position" which is miles
    from your DR, and different for each sight.  You simply use your DR
    for the AP.  The computation is more involved than HO 229 or the NAO
    tables, but you get some time back from the simplified plotting.
    Plus, as soon as you compute the intercept you get instant feedback on
    the agreement between the LOP and your DR.
    

       
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