![]() | Home > Off Topic > Costa Concordia being parbuckled Monday - maybe. |
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KurtVerbose Member Since: 08 Aug 2010 Location: Les Arses Posts: 5848 ![]() ![]() ![]() |
I will be watching with interest. Let's hope whoever is in charge is more competent than its dipstick captain.
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KurtVerbose Member Since: 08 Aug 2010 Location: Les Arses Posts: 5848 ![]() ![]() ![]() |
...and here's a webcam. Not much happening at the moment. |
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Googsy Member Since: 02 Jun 2011 Location: Where men are men and sheep are nervous. Posts: 2947 ![]() ![]() ![]() |
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ebajema Member Since: 24 Mar 2011 Location: New Plymouth Posts: 4782 ![]() ![]() ![]() |
@ Kurt, thanks for this. Would be very interesting to see, look forward to the Discovery or Nat Geo documentary !!\
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Cam-Tech-Craig Member Since: 03 Aug 2011 Location: Gloucestershire Posts: 16315 ![]() ![]() ![]() |
Wow, ill be watching this |
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KurtVerbose Member Since: 08 Aug 2010 Location: Les Arses Posts: 5848 ![]() ![]() ![]() |
Delayed 2 hours by the weather, but seems to be lifting judging by the dirty superstructure now on show. |
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markdotreed Member Since: 05 Sep 2011 Location: Ropley Posts: 741 ![]() ![]() |
The Costa ships were always getting into scrapes and the concordia in particular was always worth watching when berthing. (for the laugh)
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KurtVerbose Member Since: 08 Aug 2010 Location: Les Arses Posts: 5848 ![]() ![]() ![]() |
So as they winch the ship upright, there must be a tipping point where it will just fall. is that ok, or are there other cables to lower it gently? |
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stan Site Moderator Member Since: 13 Jul 2010 Location: a moderate moderated moderator moderating moderately in moderation Posts: 35522 ![]() ![]() |
according to the news there's a metal framework under the ship to stop it rolling over
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ebajema Member Since: 24 Mar 2011 Location: New Plymouth Posts: 4782 ![]() ![]() ![]() |
According to the stories/drawings, there is a big frame sitting on the seabed, combined with concrete "mats" for the vessel to land on. I expect the sponsoons may also play a role adding buoyancy and they will be used for ballasting it down gently. I watched the BBC live lead throughout the day (inbetween doing work of course) and had some thoughts about how they engineered it, buoyancy, structural analysis etc. etc. pretty much similar to some of the work we do in my part of the offshore industry |
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KurtVerbose Member Since: 08 Aug 2010 Location: Les Arses Posts: 5848 ![]() ![]() ![]() |
I understand it won't continue rolling over once it's upright, but there's a tipping point before that when the pulling cables will go slack and it settles upright. In an interview the head guy said they have one chance to do it as the structure is weakened so much by parbuckling that it would break if they try it twice, and this is why they're going so slowly. I just assume that they'll lower it from other cables, but I can't see any. |
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ebajema Member Since: 24 Mar 2011 Location: New Plymouth Posts: 4782 ![]() ![]() ![]() |
That's what I meant with the buoyancy tanks or sponsoons, if they're empty they will start taking up buoyancy the further the cables pulled them over. By using clever engineering and software, they would probably have calculated the buoyancy being a bit more than the weight so the cables will stay tight. Once the vessel is past the tipping point, they will then slowly pump water into the buoyancy tanks allowing the vessel to slowly be ballasted onto the supports. Similar to what a normal ballast system would do but now externally. MY 2010 5.0 SC Galway green and sand interior!!
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KurtVerbose Member Since: 08 Aug 2010 Location: Les Arses Posts: 5848 ![]() ![]() ![]() |
Ah ok. My understanding was they were filled to help with the righting. |
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KurtVerbose Member Since: 08 Aug 2010 Location: Les Arses Posts: 5848 ![]() ![]() ![]() |
Looking at the time lapse footage it does seem it moved much more rapidly at the end.
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