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Thread: Motion compensating ship personnel transfer gangway - GIF

  1. #21
    Supporting Member ranald's Avatar
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    I didn't want to say "it seems to be glued" to the "shot Gun" sized artillery & you have gone much further. I did play it a second time to check out if I missed him placing the cup there & if there was spillage when pouring.
    Such shots keep our grey matter going. ok ok, I know you know, intended the triple pun.

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    Supporting Member Frank S's Avatar
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    IT may not be glued but if the shrouding on the gun is magnetic I'd say there is either a magnet inside the glass or glued to the bottom of the glass.
    I can't tell if the camera is being moved or if the gun is being slewed aft as it appears in the video by the movement of the shadow There is defiantly at least 1 splice in the video.

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    Supporting Member mklotz's Avatar
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    I have to agree that the cup is secured to the barrel in some manner. Perhaps they're not trying to show how the cup is balanced on the barrel but rather the fact that the water in the cup doesn't slosh about with the movement of the ship.

    MD is dead on with his observation that the viewer should be able to see the ship's deck/gunwale moving about the barrel for it to be impressive. They should have chosen a time when the ship was corkscrewing or at least rolling or pitching.

    I spent some time on the bridge of the USS Boston during a gunnery exercise and I can verify that watching those rotationally stable barrels while the ship rolls and pitches around them is a guaranteed method for giving yourself the worst case of seasickness imaginable.
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    PJs (Aug 29, 2018)

  5. #24
    Jon
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    2:14 source video:


  6. #25
    Supporting Member Frank S's Avatar
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    I guess the video removes all doubt about the glass being glued to the barrel
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  7. #26
    Jon
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    Maybe just a dab of glue that we can't see? Wouldn't the cup fall off from the wind or the water spray?

  8. #27
    Supporting Member Frank S's Avatar
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    You are right Jon a small dab of silicone would have held the cup in place and still have been easy to remove but even watching the last part of the video at .25 speed when he picked it up there was Zero resistance . At 1 time during the swing I thought I saw the glass wobble a bit.
    Marv is right about being on board a vessel watching one of these hold nearly rock solid while everything else would be rocking rolling and pitching about is a recipe for creating chum at the railing.
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  9. #28
    PJs
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    In total agreement with Moby Duck!! Cup glued, boat turning and barrel in same position over the the eyelet below...only the shadow moves and the wake changes inward toward the hull, plus the barrel only appears to rise on the horizon because of the boat turning. Call 1-800-Bad-Juju to report fake news...or just use a google AI to generate fake videos.

    New video is already disabled...Wow that was fast!
    Last edited by PJs; Aug 28, 2018 at 11:16 AM. Reason: new video
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  10. #29
    Supporting Member Frank S's Avatar
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    PJs if you click on the line that says Watch this video on U tube it should take you to the video

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  11. #30
    PJs
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    Whelp that changes things a bit for sure, maybe...

    It appears the gun does rotate ≈180° and that it does look like a stabilized gun as well that the boat was in a long turn. I'm still having a hard time with the cup not falling even though the sea is relatively calm, but wind and spray and the 180° rotation over a 1 minute interval with an arc of perhaps 40' would not dump that cup sitting there half full and Off Level.

    As an adjunct to my link above on AI fakes, this showed up today, although a couple of days old and considering the source who's knows but I like the guys demeanor.

    https://www.cnn.com/2018/08/13/polit...lls/index.html
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