Power cat disaster in Hout Bay, South Africa

Discussion in 'Powerboats' started by taniwha, Oct 15, 2012.

  1. powerabout
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    powerabout Senior Member

    Right on Frosty, thats the other trap, we have a huge deck area so fill it up
     
  2. Mr Efficiency
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    Mr Efficiency Senior Member

    Cannot agree, stability curves are one thing, practical reality another, sure the righting moment disappears earlier at high heel angles, but it takes a great deal more to get them to the angle of heel, than a comparable mono. I recall years ago Shark cat pioneer Bruce Harris would demonstrate his 23 footer by pulling up beam on to the break on the old Southport bar, one film I saw it was a good 4-5 feet and a decent break on top, try that in a 23 foot mono and you are going for a swim. It is not hard to fathom, you have greater waterline beam and most importantly, the full length of the boat. Under power at speed is a different proposition, but in practice it is not really an issue because they are usually not light enough, nor fast enough, for dynamic stability to become a problem.
     
  3. powerabout
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    powerabout Senior Member

    so there is another country that would use a non self righting boat as a offshore rescue vessel its Queensland
     
  4. Mr Efficiency
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    Mr Efficiency Senior Member

    Don't think you'll find too many self-righting rescue boats in service with volunteer marine rescue organizations anywhere.
     
  5. Frosty

    Frosty Previous Member

    RNLI is a volunteer organisation and uses self righting vessels.
     
  6. Mr Efficiency
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    Mr Efficiency Senior Member

    I am aware of that organization and those boats, wasn't sure about the volunteer part.
     
  7. powerabout
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    powerabout Senior Member

    amateurs use safe boats and professionals use dangerous ones..is that we this thread is teaching us?
     
  8. Mr Efficiency
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    Mr Efficiency Senior Member

    Money doesn't grow on trees and having super expensive boats stationed at close intervals around a 13,000 mile coastline would be unaffordable. just a practical matter.
     
  9. Mr Efficiency
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    Mr Efficiency Senior Member

    I should add the distances needing to be covered in Australia requires planing hulls, the RNLI is a displacement boat is it not ? Time is of the essence in marine emergencies.
     
  10. powerabout
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    powerabout Senior Member

    slowest boat they have in the 330 strong fleet does 17kts for 240nm range

    PS Trivia
    that means the RNLI fleet could cover the Australian coastline
     
  11. Frosty

    Frosty Previous Member

    Wow 330 strong fleet, I did not know that.
     
  12. powerabout
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    powerabout Senior Member

    Thats quite impreesive I thought as well.
    All from donations
     
  13. Richard Woods
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    Richard Woods Woods Designs

    The RNLI is Britains largest charity and also helps save lives in Ireland, France and Spain. It is independent of government. The UK Coastguard is a VHF-listening-watch body, not a hands on lifesaving organisation, although it does have a few small boats and one(?) salvage tug

    http://rnli.org/aboutus/aboutthernli/Pages/Our-purpose.aspx

    Richard Woods
     
  14. Frosty

    Frosty Previous Member

    I can see how they could save lives in the channel and therefore French lives but Spain???

    And I think they charge the French for any missions.
     

  15. Richard Woods
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    Richard Woods Woods Designs

    Spanish fishermen travel up to the Western Approaches. When I was last at the UK CG Falmouth Centre they were co-ordinating a rescue of a Spanish fisherman using a RNLI boat

    Richard Woods
     
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