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    Re: Silicon Sea: Leg 83 answers
    From: Paul Hirose
    Date: 2002 Sep 19, 16:26 -0700

    1. The navigator should see the peak of Mauna Loa about 135 miles out.
    
    2. TC = 286. Subtract 1 degree for current. Subtract 11 degrees for
    compass error. CC = 274 to Mauna Loa.
    
    3. Nearest multiple of 15 deg longitude is 150W, so we are 10 hours
    behind UT.
    
    4. DR at 140 mile point is 19 24 N 154 32 W.
    
    5. TC = 305. Add 1 degree for current. Subtract 11 degrees for compass
    error. CC = 295 to pass Cape Kumukahi.
    
    6. Distance from passing Cape Kumukahi to Hilo entry point is 26
    miles.
    
    7. Total DR distance from the running fix to Hilo entry point is 177
    miles. At 10 knots we should arrive there July 17 about 0100Z, or July
    16 1500 ZT. That ignores any current.
    
    
    I used a piece of typing paper to make a plotting sheet. The horizon
    distance and heading computations were done on an E-6B aeronautical
    slide rule. The wind side works perfectly well for current; you just
    mentally divide the speed markings by 10 or 20.
    
    
    

       
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