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Examination of the intact stability and the seakeeping behaviour

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6.2 Rolling behavior <strong>of</strong> <strong>the</strong> large vessels<br />

Table 6.6: Vessel No. 15: Transversal accelerations for CE alike loading conditions<br />

Loading GM solid [m/s<br />

a t max<br />

conditions [m]<br />

2 ]<br />

CE Accident 8.54 10.0<br />

no. 15 V1 6.05 2.5<br />

no. 15 V2 7.79 9.5<br />

no. 15 V3 9.05 7.0<br />

no. 15 V4 9.78 6.5<br />

no. 15 V5 10.72 5.5<br />

no. 15 V6 11.66 5.0<br />

12<br />

Maximum transverse acceleration on <strong>the</strong> bridge [m/s 2 ]<br />

10<br />

8<br />

6<br />

4<br />

2<br />

0<br />

5 6 7 8 9 10 11 12<br />

GM solid [m]<br />

Vessel No.15 in CE accident condition<br />

CE in accident<br />

Figure 6.5: Vessel No. 15: Variation <strong>of</strong> GM solid in CE alike loading condition<br />

6.2.2 Large Vessel No. 11<br />

Subsequently Vessel No. 11 is analysed in <strong>the</strong> same way. Its main dimensions can be found in<br />

appendix A.11. The oating condition shown in table 6.7 is set for Vessel No. 11. The KG<br />

<strong>and</strong> <strong>the</strong>refore <strong>the</strong> GM solid are again r<strong>and</strong>omly varied in <strong>the</strong> range <strong>of</strong> GM solid CE <strong>of</strong> <strong>the</strong> Chicago<br />

Express during <strong>the</strong> accident. The displacement, drafts <strong>and</strong> trim in this oating condition are<br />

kept constant. They also comply with <strong>the</strong> values <strong>of</strong> <strong>the</strong> Chicago Express in its accident .<br />

The resulting compilation <strong>of</strong> loading conditions, consisting <strong>of</strong> <strong>the</strong> mentioned oating condition<br />

<strong>and</strong> a varied GM solid value, is <strong>the</strong>n used to determine <strong>the</strong> respective <strong>seakeeping</strong> behavior.<br />

53

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