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    Re: Rolling Cruise Ship
    From: P Fay
    Date: 2006 Jul 26, 21:32 -0500


    Red wrote:
    > Very interesting. How did you happen to have a GPS running and with enough sky
    > to get bearings?
    >
    >
    > A little very crude photogrammetry:
    >  The pool appears to be about 15' wide excluding the sit-rims sections. And,
    > from the exposed ladder, if I estimate each step to be about 6" apart and three
    > to four steps exposed to what had been the fill level in the earlier picture...
    >
    > I get a right triangle somewhat like this during the splash:
    >
    > | \.....
    > |     ..\..........15' pool width
    > |                                        \...........
    > |---------------------------------*-\- waterline when tilted
    > 2' tall
    >
    >
    > So I have a base side of 2' and hypoteneuse at 15'...
    >
    > Sin* = opposite/hypoteneuse = 2/15= 0.1333
    >
    > And the angle becomes about 8 degrees if I've done that right.
    >
    > Admittedly VERY crude and done with a fast eye instead of proper measurements
    > from the photos, but at eight degrees that's still only half of the fifteen(?)
    > degrees that the cruise line states now. I haven't heard if there was a tilt
    > recorder aboard or whether the results of that will be released but the rubrick
    > of "it was human error" should have scared the pants off anyone on future
    > cruises, since the error appears to be one that is being commonly made and
    > therefore all the more likely to be made again.
    >
    > If anyone wants to print out the photos and try refining that
    > measurement...Please do!
    > Anyone know the standard separation of pool ladder steps?<G>


    Not my gps, but here is the gps link, might be interesting, I wouldn't
    know....

    http://mysite.verizon.net/don2738/gpsdetailed.html

    If it matters in your calculations, the pool had an wider outer level
    with about 1 foot of water with a rim around it, you may see it in the
    photos on that page.


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