Static Stability Curve of Bismark

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Rafael
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Static Stability Curve of Bismark

Post by Rafael » Thu Sep 27, 2007 8:04 pm

I would be grateful if someone in this forum can provide me with the static transversal stability curve of Bismarck (or any other BB of the 1900-1945 period!).

Thanks in advance

Rafael

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marcelo_malara
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Post by marcelo_malara » Fri Sep 28, 2007 6:39 pm

Hi, I couldn´t find curves, but I have stability data on Hood: around 35° for maximum GZ and 70° for vanishing stability. There is some variation for different weights, I can post them detailed if you like.

Regards

Rafael
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Post by Rafael » Sat Sep 29, 2007 11:45 am

Thanks Marcelo.

I have the stability data for Hood, I was really looking for the curves.

Cheers

Rafael

Bill Jurens
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Static Stability Curve

Post by Bill Jurens » Mon Feb 04, 2008 3:56 am

By coincidence, I just completed a rather involved computation of Bismarck's righting moments at angles from 0-30 degrees. In reality, as the deck edge is immersed at about 18 degrees, figures above that value must be considered highly approximate at best. Figures below 18 degrees should be really pretty good.

For a displacement of c. 45300 tons, GM of 3.80 meters, with no allowance for free surface effect, we have:

(angle of inclination, righting moment (ton-meters):

0, 0.
5, 15131
10, 30927
15, 48115
20, 67560
25, 90363
30, 118015

Hope this helps...

Bill Jurens

hellomartin
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Post by hellomartin » Mon Feb 04, 2008 7:44 am

Rafael,

out of interest what is a static transversal stability curve, and what is interest in it?

best,

Martiin

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marcelo_malara
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Post by marcelo_malara » Mon Feb 04, 2008 11:55 am

Martin:

The stability curve basically shows how much the ship can heel before capsizing.

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