Re: Poseidon Adventure remake: could it work?

"Jeffs" <jeff_suzuki@xxxxxxxxx> wrote in
news:1132785887.690384.141180@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:

> Wildepad wrote:
>>
>> A ship is very bottom-heavy. To get it to roll 90 degrees,
>> you have to add enough weight to one side to offset the
>> engines, equipment, and the concentration of framework.
>
> You might be able to get away with supposing that, once the
> ship rolls far enough, all the heavy stuff rips out of its
> housings and goes crashing merrily through the decks.
> (IIRC, this is one of the things that happened to the
> _Titanic_ once the list got bad enough).
>
> Say an engine has a weight of W. Once the ship gets to a
> list of 30 degrees, there's a force of 1/2 W pushing it
> sideways. Presumably at some points bolts would simply
> shear off, drive shafts would simply SNAP etc. (Of course,
> you have a few hundred tons rolling around on deck and it
> probably won't be stopped by anything so pedestrian as the
> hull...)
>
> Jeffs
>
>

Nice idea; but:

Ships are designed to stay together in rolls that exist at sea.
Depending on the class, ships can survive a roll of 120+
degrees!!! (there is the classic picture series of a tug doing a
full roll (360) and ending upright.)

The boilers coming loose and punching holes in the hull is from
the fact that the ship was protected from rolls but not from a
30 degree down by the bow condition. (I think the data shows the
ship breaking up when it was about 20 degrees down.) So the
boilers slipped off their mounts and fell fwd.


(and speaking from experience -- a 45 degree roll was common for
my boat if we did a sharp turn at speed. It was also designed to
handle extreme up and down angles. One boat survived an 80
degree up angle - after a 60 degree down angle!!)
.

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