Costa Concordia, 80 deg list, really scary !!

Discussion in 'Stability' started by smartbight, Jan 15, 2012.

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  1. Georgezx9
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    Georgezx9 New Member

    Concordia

    Due to unbelievable incompetence, he took the ship to waters where she grounded and holed,.
    I guess that the damage was greater than she could survive.
    Whether he knew this only he knows, but I guess he decided to take the ship in close to save passengers, by running her aground.

    By running her aground she loses stability even faster, and capsizes, not much rise and fall of tide in the med so not a great contributor.
    Incredible so few have lost life, but would she have stayed upright for longer to get 100% off??

    Thoughts?
     
  2. smartbight
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    smartbight Naval Architect

    Was faulty ship design to blame?

    By Tuan C. Nguyen | January 18, 2012, 6:05 AM PST

    http://www.smartplanet.com/blog/thi...disaster-was-faulty-ship-design-to-blame/9913

    Forty minutes. That’s all the time 4,200 passengers and crew members aboard the Costa Concordia had to evacuate safely after the ship ran aground off the coast of Tuscany. After which point the ship started listing so badly, lifeboats couldn’t be lowered.

    The fact that the situation turned so disastrous so quickly has lead many to question the design integrity of modern mega-cruise ships. One such group, Nautilus International, a trade union for Maritime employees, has even called for a re-examination of similar boats in operation.

    In a statement released shortly after the accident, the group said they wanted a “thorough review of regulations governing the construction and operation of passenger vessels - in particular, standards of stability and watertight integrity.”

    ...

    http://www.smartplanet.com/blog/thi...disaster-was-faulty-ship-design-to-blame/9913
     
  3. Leo Lazauskas
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    Leo Lazauskas Senior Member

    Thanks for the clarification, John (and DCockey)
    I am still going on my memory of what I heard personally from Tuck and MIT boffins immediately after the accident. The chart I was given at the time did show the rock.
     
  4. Leo Lazauskas
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    Leo Lazauskas Senior Member

    Sure, and planes crash because of a loss of altitude.

    I'm interested in the details, such as...
    How much did the stern drop as a consequence of speed and water depth?
    Why did a manouevre he performed previously fail this time?
    Was the captain inebriated?
    Did he not want to return so he could have a drink and thus falsify a blood-alcohol test?
    Who was on the bridge with him at the time?
     
  5. Leo Lazauskas
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    Leo Lazauskas Senior Member

    Among other things, it depends on the detailed bathymetry, speed and the angle of approach.
    It does not always act to pull the hull inwards. The bank can also act to push the ship away; or the bow might be pushed away, and the stern sucked inwards. It's even more complicated if the ship was turning near the bank and shallows.
     
  6. DCockey
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    DCockey Senior Member

    Looks like there were two reports on the QE2 - rock incident, one by the UK and one by the UK MAIB (link in post #60), and the other by the US NTSB, MAR-93-01, which has not been put on the web yet but is available in paper from NTIS. I wonder if they held separate hearings or a joint hearing with separate reports?

    The MAIB report in Section 7.2.4, p 22, notes that the departure had been delayed and the speed was increased as a result.
     
  7. Squidly-Diddly
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    Squidly-Diddly Senior Member

    I surprized these ships don't have more canistered liferafts that

    can be just tossed into the water and semi-automatic after that.

    I'd think most scenarios of a ship sinking would make deploying life boats with all sorts of fancy ropes and winches less than certain.

    Were the life boats on the low side able to be deployed once it went past 45' or so?
     
  8. Leo Lazauskas
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    Leo Lazauskas Senior Member

    Thanks, David: at least that part of my 1992 memory is still intact. :)
    I suppose they didn't mention that the "delay" was caused by passengers and
    crew wanting to stay for a few more drinks.
     
  9. Ad Hoc
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    Ad Hoc Naval Architect

    What...you mean they wanted to relax asnd have a party on a cruise ship...heaven for bid..what ever next :p:D

    Or too much gawking at Chappaquiddick ;)
     
  10. powerabout
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    powerabout Senior Member

    there wasn't enough people killed in the this disaster so there wont be any change
    The Shipping industry has to kill plenty before anything happens going on past performance

    Aircraft get designed safe as an ongoing process before the disasters
    shipping designs change after the disasters

    Aircraft captains get taught to fly and are examined on that
    Ship captains get taught to manage and are examined on that
     
  11. Mr Efficiency
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    Mr Efficiency Senior Member

    Sounds like your next holiday won't be a cruise. :p
     
  12. Leo Lazauskas
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    Leo Lazauskas Senior Member

    Yes, it's a major problem that bedevils the 1st World.

    Anyway, celebrations were held on shore, and quite a few of the crew were
    allegedly affected by "ardent spirits", as Jeeves would say. :)

    I still remember the (fake) election poster from 1970s.
    Vote Ted Kennedy! And put a blonde in every pool.
     
  13. daiquiri
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    daiquiri Engineering and Design

  14. ABoatGuy
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    ABoatGuy Member

    You're right Leo - just being facetious.

    I'm interested too. And I'm curious about the subdivision - and what compartments flooded and an accurate time line with flooding and the heel and trim angles, ship speed etc. Did the wt bulkheads hold? I'd like to see if it behaved as one would anticipate or do we have a lot to learn from this.
     

  15. mydauphin
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    mydauphin Senior Member

    I wonder if an USN Aircraft Carrier would have hit the same rock, would it have list and sunk so quickly, Or is it that these floating hotels are just cheaply built and top heavy?
     
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