# Large Stability Calculation help!! (2)

Discussion in 'Stability' started by yuyewuyuconan, Apr 18, 2012.

1. Joined: Nov 2009
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### yuyewuyuconanJunior Member

pictures :

how can i use cheel 0~60 data to get the result in green line

2. Joined: Nov 2009
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### yuyewuyuconanJunior Member

when cheel the ship's vcb>vcb0 ,so vcb in this table is distance from B to ro 10deg base line ？

3. Joined: Feb 2009
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Location: NL

### klaasJunior Member

Calculation of righting lever:

For cross-curves based on KG=0, called KN curves:

GZ (righting lever)= KN - KG*sin(heel)

where in this case:
KN = PN
KG = KMT

The draught is calculated based on the load case. Based on the load case a certain trim and displacement can be calculated using the hydrostatic tables. Based on this data the appropriate cross curves are selected for calculation of the stability curve.

4. Joined: Nov 2009
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### yuyewuyuconanJunior Member

thank you !IT is not easy to make a stability software.

5. Joined: Feb 2009
Posts: 26
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Location: NL

### klaasJunior Member

well that's why others do it....

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