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I think if you look closely at this picture:
http://www.shipspotting.com/modules/myalbum/photo.php?lid=343059
taken just a few days prior to her ill-fated voyage you will see that this is a feature of the design of the ship. (If not.... then there really are some serious questions to be answered!!!)
Regards
John J.
http://www.shipspotting.com/modules/myalbum/photo.php?lid=343059
taken just a few days prior to her ill-fated voyage you will see that this is a feature of the design of the ship. (If not.... then there really are some serious questions to be answered!!!)
Regards
John J.
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5,027 Posts
Excellent work Jonsey you are absolutley correct !!
It must be designed that way as you suggest although I cant imagine why ?? Clearly hogged about the accomodation or is it "Reverse Shear " ( never seen that before )
Need some input from Pirate / Jimmys and the others with container ship knowledge on this one .
As a Chief I sailed with once told me ;
" There is no such thing as a Mystery ; either we dont have the correct facts or we are analysing those we have incorrectly ."
We know we have a split in the side shell Port and Stbd . We dont know that the bottom is split at this time . Looking at your picture I think gives good grounds that it is Not split across the double bottom forward of the main engine.
If that is the case I feel there is a good chance the hull will be intact enough to refloat at some point in time providing there is no more damage to occur from inclement weather .
The subject gets more interesting daily .
Derek
It must be designed that way as you suggest although I cant imagine why ?? Clearly hogged about the accomodation or is it "Reverse Shear " ( never seen that before )
Need some input from Pirate / Jimmys and the others with container ship knowledge on this one .
As a Chief I sailed with once told me ;
" There is no such thing as a Mystery ; either we dont have the correct facts or we are analysing those we have incorrectly ."
We know we have a split in the side shell Port and Stbd . We dont know that the bottom is split at this time . Looking at your picture I think gives good grounds that it is Not split across the double bottom forward of the main engine.
If that is the case I feel there is a good chance the hull will be intact enough to refloat at some point in time providing there is no more damage to occur from inclement weather .
The subject gets more interesting daily .
Derek
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8,684 Posts
In this picture the vessel has taken what is called a "permanent set". When steel is operating within the the zero stress and the yeild point ( a stress it starts to stretch) it will recover. In other words it will bend and then go back to normal. Once the stress passes the yield point the steel looses it ability to recover. If it is further stretched it takes on a permanet set in other words a permanent bend or hogg. This is what has happened here. If the stress is then taken to the ultimate tensile stress the steel fractures and we get a break and this is what is happened to the side.
This is a problem of overstress. ie passing the ultimate stress which causes fracture as against overload which means the stress is between zero and yield. You can recover from overload you cannot recover from overstress. Once you go past UTS (ultimate tensile stress) the steel is finished.
best regards
jimmys
This is a problem of overstress. ie passing the ultimate stress which causes fracture as against overload which means the stress is between zero and yield. You can recover from overload you cannot recover from overstress. Once you go past UTS (ultimate tensile stress) the steel is finished.
best regards
jimmys
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Jimmys ;
I am not referring to Pirates pictue but the one Jonsey has referred to with the vessel alongside a container terminal taken a few days Prior to the ill fated voyage .
The hog shown in this picture is exacly what we see in Pirate picture taken after the splits .
If you place a straight edge on the forward deck line and you will see the aft deck line is significantly different . The vessel in this picture is Hogged !
If this is a " Permanent Set " it occured Proir to the Vessel l
Leaving Port.
Derek
I am not referring to Pirates pictue but the one Jonsey has referred to with the vessel alongside a container terminal taken a few days Prior to the ill fated voyage .
The hog shown in this picture is exacly what we see in Pirate picture taken after the splits .
If you place a straight edge on the forward deck line and you will see the aft deck line is significantly different . The vessel in this picture is Hogged !
If this is a " Permanent Set " it occured Proir to the Vessel l
Leaving Port.
Derek
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460 Posts
That seems pretty clear from those 2 pictures, Derek.
The "Bend" seems to start exactly in the same place, just ahead of the bridge...
Does it indicate that the flotation back of the bridge is less than available space for boxes and their weight ?
My next question: The ships officers wouldn't have noticed such a hogg?
The "Bend" seems to start exactly in the same place, just ahead of the bridge...
Does it indicate that the flotation back of the bridge is less than available space for boxes and their weight ?
My next question: The ships officers wouldn't have noticed such a hogg?
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If it is a hog with "permanent set " that occured during loading operations then the crew would have had to heard some pretty loud noises particularily in the engine room .
My guess is that the ship was built this way ( for whatever reason ) or is a result of the previous grounding ( although I can not imagine how it could be overlooked on survey ; unless everyone was blind )
In any event I think the picture tells a lot with respect to the theories presented in this forum re the present condition of the hull .
Derek
My guess is that the ship was built this way ( for whatever reason ) or is a result of the previous grounding ( although I can not imagine how it could be overlooked on survey ; unless everyone was blind )
In any event I think the picture tells a lot with respect to the theories presented in this forum re the present condition of the hull .
Derek
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