Ship blown over in Edinburgh

penfold

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I'm baffled at the suggestion the wind might tip 2000 tonnes of ship over if properly supported; if the docking blocks were incorrectly placed or there was failure of the blocks high wind might be a small contributory effect. Given how congested it is around the western drydock I'm doubtful a large enough crane could be brought in, flooding the drydock may be the only way to right it.
 

RunAgroundHard

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I'm baffled at the suggestion the wind might tip 2000 tonnes of ship over if properly supported; if the docking blocks were incorrectly placed or there was failure of the blocks high wind might be a small contributory effect. Given how congested it is around the western drydock I'm doubtful a large enough crane could be brought in, flooding the drydock may be the only way to right it.

I have had one of my drilling rigs blow along the support beams in a north sea gale. It crashed into a module at teh end of the rails. No one believe it could do that until the engineers calculated the wind loading and beam friction at the time. It resulted in storm clamps being supplied to reduce the risk.

The vessel itself is very high sided at the bow with a shallow hull depth and may not be that flat bottomed, so has small chord to be supported on. I would have thought, like the vessel astern of her, she would have had horizontal braces applied to stop exactly this type of event. The hull looks as if it has been newly painted, I wonder if the horizontal braces were removed for painting. No doubt it will all come out in the investigation.
 

steveeasy

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Boy the gusts were very strong today. I was polishing the topsides of my boat that is in a very good cradle. There were 2 times when the whole boat shook and wobbled the cradle. Never felt it like that before. Steveeasy
 

Thistle

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According to The Times, the ship has been in dry dock since 2020. Would this be normal? Could it be relevant?
 

Spirit (of Glenans)

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According to The Times, the ship has been in dry dock since 2020. Would this be normal? Could it be relevant?
According to The Times, the ship has been in dry dock since 2020. Would this be normal? Could it be relevant?
Has been "in moorage" according to the BBC article linked in Boathook's Post #20
 

jamie N

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One issue that they'll have is that the ship has toppled over onto its stbd side. The ship operated out of the stbd side, where the ROV's were launched from, with one being operated from a hangar that has a door through which the ROV is operated. Any damage to that area will be significant, and take a lot of repairing. If there was an ROV onboard, I hope that it was tied down, as it'd suffer potentially some very expensive damage.
It was a very nice ship, and great to work from.
 

veshengro

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Just a thought...When the time comes to blame someone, as I'm sure it will, I wonder if it will fall on the person who made the decision not to put in place shores or props around Petrel. I've been in dry dock many times..well not me, :p but ships I've worked aboard, and shores/props were normally laid with one end on the terraced dry dock wall and the other end against the ship. The shipboard end has a lanyard which is secured onboard to a rail or stanchion so that the shore or prop is basically horizontal between ship and dry dock wall. Even if the ship did rock in a gale of wind she could not fall over with the props in position.

I know times have changed, ships are built like boxes now, flat bottoms etc: so probably don't need shoring up, although someone must make the technical assessment and decision that a particular vessel because of weight, shape and probably other factors that I haven't a clue about, that the vessel does not need props or shoring up, but will sit unsupported on the bottom blocks. Perhaps someone will be held responsible for getting their sums wrong?
 

penfold

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According to The Times, the ship has been in dry dock since 2020. Would this be normal? Could it be relevant?
Just bad journalism; the drydock has had a load of different vessels in and out of it as drydocks do. Petrel has been laid up in Leith since before the plague; either she was due a 5 year survey or was going back into service, so was drydocked in the normal manner.

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