Examination of the intact stability and the seakeeping behaviour
Examination of the intact stability and the seakeeping behaviour
Examination of the intact stability and the seakeeping behaviour
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4.11 Vessel No. 11<br />
ˆ The limiting <strong>intact</strong> <strong>stability</strong> criterion (Max. GZ at 25 ◦ ) requires a GM min = 4.20 m.<br />
The ship is very ne with its c B value <strong>of</strong> 0.59. The <strong>stability</strong> values GM solid <strong>and</strong> mainly GM min<br />
have a signicant higher order <strong>of</strong> magnitude, than <strong>the</strong> values <strong>of</strong> <strong>the</strong> previous analysed vessels.<br />
The calculated transversal accelerations on <strong>the</strong> bridge <strong>and</strong> <strong>the</strong> rolling angles for <strong>the</strong> three accident<br />
conditions are listed in table 4.22.<br />
Table 4.22: Results <strong>of</strong> <strong>the</strong> <strong>seakeeping</strong> calculation for Vessel No. 11<br />
Accident<br />
[<br />
a<br />
situation t max m/s<br />
2 ] ϕ max [ ◦ ]<br />
Situation 1 4.0 11<br />
Situation 2 3.5 8<br />
Situation 3 5.5 12<br />
The maximum acceleration occurs for accident situation 3. But <strong>the</strong> calculated accelerations are<br />
considerably smaller than for <strong>the</strong> previous analysed vessels. The statistical distribution<br />
<strong>of</strong> <strong>the</strong> transversal accelerations in this situation is shown in gure 4.22.<br />
Figure 4.22: Transversal acceleration on <strong>the</strong> bridge <strong>of</strong> Vessel No. 11 in accident situation 3<br />
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