Examination of the intact stability and the seakeeping behaviour

6.2 Rolling behavior of the large vessels
16
14
Maximum transverse acceleration on the bridge [m/s 2 ]
12
10
8
6
4
2
0
2 4 6 8 10 12 14 16
GM solid [m]
Small Vessel no.13 Midsized Vessel No.01 Large Vessel No.14 = CE
Figure 6.4: Comparison of the stability inuence for the three vessels in accident situation 1
6.2 Rolling behavior of the large vessels
As mentioned in chapter 5.2 the large vessels, analysed in the ballast arrival loading condition,
Vessel No. 11, Vessel No. 14 (Chicago Express) and Vessel No. 15 neither experience
high rolling angles nor high transversal accelerations on their bridges. But the Chicago Express
is denitely endangered to experience very high transversal accelerations, as e.g. when
it encountered accident situation 1 and high transversal accelerations of up to 10 m /s 2 occurred
(refer to BSU report [1]). The data of the loading condition during the accident is shown in
table 6.4. Therefore it is presumed, that the other two large vessels also reach high transversal
accelerations, when they operate in such a loading condition. This presumption shall examined
in the following.
For this reason the seakeeping behavior of the two other large vessels is determined for several of
such comparable loading conditions. To achieve more clarity, the results of this investigation are
only shown for accident situation 1, being the Chicago Express accident situation. (compare
section 3.12)
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