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    Slip + 1st Lunar
    From: Doug Royer
    Date: 2003 Apr 25, 12:20 -0700

    Thank you all for your suggestions and advice on the Lunar.I really
    appreciate the help.I'll be useing all the advice and tips given.I'm going
    to go ahead with it this weekend.That said,however,I'm going to take Mr.
    Prinz's advice.I think doing it in stages as he advises makes perfect
    sense.I'll start out practiceing takeing the angular measurements between
    the differant bodies throughout the day on Sat.Sunday I plan to practice
    useing the horizons on as many bodies as I can.This 1st weekend I am
    interested in only honeing the mechanical techniques and my skill
    level(speed of multiple accurate measurements).
    I live at roughly 33.0* N and 116.7* W.The 1/4 moon can be seen the last few
    days untill about 0740 zt.In fact I was out this morning at 0650 zt (that
    was when the sun's upper limb came into veiw)and practiced takeing the angle
    between the moon and sun.The moon's image is fairly washed out by then and
    hard to get a good reading.I'll get up early in the morning to practice in
    darker conditions.
    I'll be useing my Tamaya with no more than 6x.I'll start out useing the 3x.I
    have 2 horizons;a Davis and 1 I made a couple of weeks ago.The Davis has
    plastic sheilds and the one I made uses glass.I'm looking forward to
    mastering this technique(over time).Mr. Pearson, I'll get to your website
    shortly after sending this.
    Let's put this slip thread to rest.Mr. Prinz,the exam questions are in
    sections.I wrote it out exactly as on the exam.One question may be as I
    wrote it and the next question may be about ship's stability.The
    examiner,when questioned about it,showed me that in the study material
    statute miles are used and that is what was the expected answer.Details,he
    said,pay attention to details.That in itself was a lesson.
    No,they're not really used.I would use a preobserved speed card(graph).GPS
    and Doppler are now used for this and calibrateing equipement.That said, if
    all else fails, I would know how to use the proceedure and that is what I
    believe the C.G. was after.
    Basically,useing this example, this is how calculations are used on board:
    At a certain vessel speed it is known that the rpm's of the plants and
    shafts should be certain quantity;takeing into account ship's
    draft,precalculated fuel consumption and other ship's factors.If the
    calculations are in the "ballpark" with other data,than all is fairly
    well.If not,on the other hand,you had better find out why.Could it be damage
    to something,equipement that needs calibrateing,excessive bottom fouling or
    just a sloppy set of calculations?Find the problem and correct it at the
    earliest opportunity etc.It's just a piece of the whole puzzle so to speak.

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