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can cruise ships "counterflood"?
KSUmarksman
Member Posts: 10,705 ✭✭✭
Does anyone know if passenger vessels are physically capable of counter-flooding to correct a list, like warships?
Of course I am talking about the Costa Concordia disaster. My first thought when reading about it was "why didn't they counterflood", since the ship was in shallow water, and the lower levels should be uninhabited except for engineering crews who should have bugged out from flooding areas anyway. Worst case, the ship would "bottom out" but judging from the wreck photos, the boat decks should have been clear of water and evacuation would be much easier without a bad list.
Of course I am talking about the Costa Concordia disaster. My first thought when reading about it was "why didn't they counterflood", since the ship was in shallow water, and the lower levels should be uninhabited except for engineering crews who should have bugged out from flooding areas anyway. Worst case, the ship would "bottom out" but judging from the wreck photos, the boat decks should have been clear of water and evacuation would be much easier without a bad list.
Comments
yes, cruise ships(along with just about every type of large commercial ships) have various ballast tanks that can be shifted around. the problem is that the capacity to do this is limited. you can shift fuel, fresh water, and ballast around, but not infinitely.
within the confines of this type of incident, its also VERY complicated. you dont just go pumping water around. you have to plan it very carefully. if you go to far, you flip flop the ship, and if you really screwed up it keeps rolling.
when the tanks of various types are intact, moving weight around isnt very hard. you just carefully plan what you want to transfer and where its going and the line up your valves and pumps and away you go.
when you're dealing with flooding, its a whole different ball game. the salvage crew will have their hands full, but it can be done. if you're not familiar with it, read up on the cougar ace incident.
http://www.wired.com/science/discoveries/magazine/16-03/ff_seacowboys?currentPage=all
that was a salvage and a half.
what you mean is ballasting.
yes, cruise ships(along with just about every type of large commercial ships) have various ballast tanks that can be shifted around. the problem is that the capacity to do this is limited. you can shift fuel, fresh water, and ballast around, but not infinitely.
within the confines of this type of incident, its also VERY complicated. you dont just go pumping water around. you have to plan it very carefully. if you go to far, you flip flop the ship, and if you really screwed up it keeps rolling.
when the tanks of various types are intact, moving weight around isnt very hard. you just carefully plan what you want to transfer and where its going and the line up your valves and pumps and away you go.
when you're dealing with flooding, its a whole different ball game. the salvage crew will have their hands full, but it can be done. if you're not familiar with it, read up on the cougar ace incident.
http://www.wired.com/science/discoveries/magazine/16-03/ff_seacowboys?currentPage=all
that was a salvage and a half.
Wicked good link! Thanks.
Wicked good link! Thanks.
it was that job that wet my whistle about getting into maritime salvage before the wreck. of course, i have precisely none of the skills they need, so it would have been a tough sell; but the work sounds so damn exhilarating i was thinking it might be worth a shot.
The articles I've read claim the ship is hanging on rocks, and could slip off and drop into 120 fathoms.
720 ft deep that close to the reef?
maybe the capt did the right thing beaching her the way he did?
quote:Originally posted by dlrjj
The articles I've read claim the ship is hanging on rocks, and could slip off and drop into 120 fathoms.
720 ft deep that close to the reef?
maybe the capt did the right thing beaching her the way he did?
That depth is why he is supposed to have claimed he thought he had plenty of water beneath him.
Who knows, it's not my pond, so I don't know the water.
what you mean is ballasting.
yes, cruise ships(along with just about every type of large commercial ships) have various ballast tanks that can be shifted around. the problem is that the capacity to do this is limited. you can shift fuel, fresh water, and ballast around, but not infinitely.
within the confines of this type of incident, its also VERY complicated. you dont just go pumping water around. you have to plan it very carefully. if you go to far, you flip flop the ship, and if you really screwed up it keeps rolling.
when the tanks of various types are intact, moving weight around isnt very hard. you just carefully plan what you want to transfer and where its going and the line up your valves and pumps and away you go.
when you're dealing with flooding, its a whole different ball game. the salvage crew will have their hands full, but it can be done. if you're not familiar with it, read up on the cougar ace incident.
http://www.wired.com/science/discoveries/magazine/16-03/ff_seacowboys?currentPage=all
that was a salvage and a half.
That was a good read
what you mean is ballasting.
yes, cruise ships(along with just about every type of large commercial ships) have various ballast tanks that can be shifted around. the problem is that the capacity to do this is limited. you can shift fuel, fresh water, and ballast around, but not infinitely.
within the confines of this type of incident, its also VERY complicated. you dont just go pumping water around. you have to plan it very carefully. if you go to far, you flip flop the ship, and if you really screwed up it keeps rolling.
when the tanks of various types are intact, moving weight around isnt very hard. you just carefully plan what you want to transfer and where its going and the line up your valves and pumps and away you go.
when you're dealing with flooding, its a whole different ball game. the salvage crew will have their hands full, but it can be done. if you're not familiar with it, read up on the cougar ace incident.
http://www.wired.com/science/discoveries/magazine/16-03/ff_seacowboys?currentPage=all
that was a salvage and a half.
I n a nut shell... If U got compartments ripped open on 1 side and U shift too much to the other,the ripped ones empty right out and POOF you're tippin the other way....
No?
Looked to me, from what I could see, like the concordia rolled to the opposite side that it was holed on. I didn't get that. I guess if they were ballasting the non-holed side to compensate that might explain it.
See above.
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quote:Originally posted by KEVD18
what you mean is ballasting.
yes, cruise ships(along with just about every type of large commercial ships) have various ballast tanks that can be shifted around. the problem is that the capacity to do this is limited. you can shift fuel, fresh water, and ballast around, but not infinitely.
within the confines of this type of incident, its also VERY complicated. you dont just go pumping water around. you have to plan it very carefully. if you go to far, you flip flop the ship, and if you really screwed up it keeps rolling.
when the tanks of various types are intact, moving weight around isnt very hard. you just carefully plan what you want to transfer and where its going and the line up your valves and pumps and away you go.
when you're dealing with flooding, its a whole different ball game. the salvage crew will have their hands full, but it can be done. if you're not familiar with it, read up on the cougar ace incident.
http://www.wired.com/science/discoveries/magazine/16-03/ff_seacowboys?currentPage=all
that was a salvage and a half.
I n a nut shell... If U got compartments ripped open on 1 side and U shift too much to the other,the ripped ones empty right out and POOF you're tippin the other way....
No?
in a nut shell, yeah. the issue becomes one of momentum. once you get that ship in motion, if you havent done your sums right, she's gonna keep on rolling...