Vendee Globe 2016

Discussion in 'Sailboats' started by Doug Lord, Oct 28, 2016.

  1. Doug Lord
    Joined: May 2009
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    Doug Lord Flight Ready

  2. Doug Lord
    Joined: May 2009
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    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    Ocean racers using foils need some way to spot obstacles ahead and just under the surface- a version of this system will be mandatory technology before long:

    http://www.powerandmotoryacht.com/navigation/forward-looking-sonar
    First of all, why is Interphase sonar worth having? Its value while coastal cruising and beyond is indisputable if for no other reason than its ability to detect semisubmerged shipping containers invisible to radar and the naked eye.
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  3. Tiny Turnip
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    Tiny Turnip Senior Member

    It would seem to be very desirable for everybody, but isn't it a very big ask at the moment?

    I've no real idea of the state of the art, but a quick google came up with a PBO 2016 review of devices aimed at small boats, and running up in price to £7500; the best range was 100 metres. And I don't know how they deal with smaller floating objects hidden in the waves.

    Even if the range was a mile, at 25 knots, and with an audible warning, Alex would have to wake up and get out of his bunk pretty snappy to be in with a shout of avoiding an obstacle. Unless, of course, the sonar links to a collision avoidance autopilot function.
     
  4. Doug Lord
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    Doug Lord Flight Ready

    Ocean Going Foilers

    I didn't even know that such a system was available at any price or speed. The fact that it is means it won't be long before a practical system for highspeed sailboats is available. We're at the very start of the Vendee and we have at least two boats out as a result of collisions. I can't think of a greater impediment to the development of ocean going foilers! There really must be a solution!
     
  5. Tiny Turnip
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    Tiny Turnip Senior Member

    I quite agree - theres a pretty clear need for such a system - for racing, recreational and commercial use!
     
  6. Doug Lord
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    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

  7. Doug Lord
    Joined: May 2009
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    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

  8. Doug Lord
    Joined: May 2009
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    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

  9. SukiSolo
    Joined: Dec 2012
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    Location: Hampshire UK

    SukiSolo Senior Member

    Time to rig the spare? Or maybe bit of DIY foil making....

    TBH with growlers (yet to come) and other stuff like whales, plus all the other detritus in our oceans you have to expect a bit of damage. Be interesting to see how many other 'foilers' suffer on this whirwind tour of the globe. Impressive speeds so far and PRB is doing well for a non foiler.
     
  10. philSweet
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    philSweet Senior Member

    Yes, m'dears, mother nature is a ***** -

     
  11. Tiny Turnip
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    Tiny Turnip Senior Member

    259 metres would have taken just 23 seconds more.
     
  12. Doug Lord
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    Doug Lord Flight Ready

  13. JosephT
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    Location: Roaring Forties

    JosephT Senior Member

    The broken foils were a concern early on. Perhaps future races will allow them to bring a spare or make them stronger yet. There's only so much you can do though. Hitting an object of any respectable hardness or mass can take a boat out of the race. There's a lot of debris in today's oceans so it's simply luck to come out unscathed. The Southern Ocean will also bear its teeth shortly so this will get more interesting. Let's hope the equipment failures are minimal.

    On the sleep deprivation, this is par for the course in any ocean race. If you don't manage that you'll grind yourself to bits in due time.
     
  14. Corley
    Joined: Oct 2009
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    Corley epoxy coated

    A sonar detecting system for debris sounds good but in reality if it gives many false positives it would get switched off and racers would just take their chances.
     

  15. Steve Clark
    Joined: Jul 2004
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    Location: Narragansett Bay RI

    Steve Clark Charged Particle

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