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    Silicon Sea: Leg 32
    From: Dan Hogan
    Date: 1997 Jul 30, 1:33 PM

    Sight Reduction and
    Dead-Reckoning problem     Leg 32  073097   Test your knowledge!
    ----------------------     ------  ------   --------------------
    
    At 24:00:00ZT on 28/06/1996 our EP was (12d 37.9'N  60d 31.0'E).
    Our plotted TC is 123.2d  Speed 8Kts, Current Drift 9 Kts {at} Set 86d. Var0dw
    Dev2dW.
    
    
    1) What is the Speed Made Good(SMG)?
       What is the Compass Course Made Good(CCMdGd)?
    -- ---------------------------------------------
    
    Using the SMG and our TC.
    
    2)  What is our Estimated Position(EP) at 0800ZT on 28/06/1996?
    --  -----------------------------------------------------------
    
    3)  From this DR what is the TC and Dist to the Mali' Waypoint
        (04d 10.0'N  73d 30.0'E?
    --  ----------------------------------------------------------
    
    At Noon We get a break in the clouds and get a LAN sight of the
    Sun. Use the DR for 12:00:00ZT this date.
    
    4)  What is the Zone Time(ZT) of Meridian Passage of the Sun?
    --  ---------------------------------------------------------
    
    5)  What is the Zone Description?
    --  -----------------------------
    
    6)  What is the Noon LAT if the Sun's Hs was 74d 08.3'?
    --  ---------------------------------------------------
    
    7)  What is the differance in Lat?
        Is the LAN N or S of our DR?
    --  ------------------------------
    
    8) What is the DR at 19:00:00ZT, using the Q3 TC and SMG?
    -- -----------------------------------------------------
    
    
    Note:
    Lat & Lo = XXd XX.X', Date=DD/MM/YY, HE 8 Feet, Index correction -.2', Time
    hh:mm:ss in UTC/GMT. Silicon Sea is a medium displacement sailing vessel, 40
    Feet LOA. 38 Feet LWL; Cutter rigged. Looks a lot like a Mason. Can tack to
    45d. Dist to Horizon: Nmi = SQRT HE{at}mtrs x 2.07; Nmi = SQRT HE{at}ft x
    1.17. Water Tank = 60 gal(Imp.). Fuel Tanks = 90 gal (Imp.). Fuel
    consumption .450 gal/Hr at 8.3 Kts.
    
    PLEASE respond with your results and thinking on these exercises to the
    NAVIGATION list at large. If you have questions or problems, A lot of folks
    on the list are knowledgeable and willing to help. Any questions or doubtful
    areas will be responded to promptly. Let us hear from you soon!
    
    Good Navigating!
    
       -=The Navigation List Working Group=-
    
            Peter Smith  - psmith{at}wellspring.us.dg.com
            Ron Legere   - ronald.legere{at}yale.edu
            Tony Severdia- anthonys{at}ix.netcom.com
            Wes Muffin   - wmurfin{at}onslowonline.net (Cartographer)
            John Simmonds- mobi{at}netconnect.com.au
            Dan Hogan    - dhhogan{at}lightside.com
    
    Dan Hogan WA6PBY		Yacht GACHA
        West Covina, CA		Catalina 27
        dhhogan{at}lightside.com	San Pedro, CA
    
    
    
    
    
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